From 2ea10428c8692a09cba96869a88ac915fc38e81b Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Tue, 6 May 2014 09:34:44 -0700
Subject: [PATCH 01/13] properly wrap XMPP stuff with "#ifdef HAVE_XMPP"

---
 interface/src/ui/ChatWindow.cpp | 78 ++++++++++++++++-----------------
 1 file changed, 38 insertions(+), 40 deletions(-)

diff --git a/interface/src/ui/ChatWindow.cpp b/interface/src/ui/ChatWindow.cpp
index 39db2b734e..72445fa69a 100644
--- a/interface/src/ui/ChatWindow.cpp
+++ b/interface/src/ui/ChatWindow.cpp
@@ -87,39 +87,13 @@ ChatWindow::ChatWindow(QWidget* parent) :
     }
     connect(&xmppClient, SIGNAL(messageReceived(QXmppMessage)), this, SLOT(messageReceived(QXmppMessage)));
     connect(&_trayIcon, SIGNAL(messageClicked()), this, SLOT(notificationClicked()));
-#endif
+#endif // HAVE_QXMPP
 
     QDir mentionSoundsDir(Application::resourcesPath() + mentionSoundsPath);
     _mentionSounds = mentionSoundsDir.entryList(QDir::Files);
     _trayIcon.setIcon(QIcon( Application::resourcesPath() + "/images/hifi-logo.svg"));
 }
 
-void ChatWindow::notificationClicked() {
-    if (parentWidget()->isMinimized()) {
-        parentWidget()->showNormal();
-    }
-    if (isHidden()) {
-        show();
-    }
-
-    // find last mention
-    int messageCount = ui->messagesVBoxLayout->count();
-    for (unsigned int i = messageCount; i > 0; i--) {
-        ChatMessageArea* area = (ChatMessageArea*)ui->messagesVBoxLayout->itemAt(i - 1)->widget();
-        QRegularExpression usernameMention(mentionRegex.arg(AccountManager::getInstance().getAccountInfo().getUsername()));
-        if (area->toPlainText().contains(usernameMention)) {
-            int top = area->geometry().top();
-            int height = area->geometry().height();
-
-            QScrollBar* verticalScrollBar = ui->messagesScrollArea->verticalScrollBar();
-            verticalScrollBar->setSliderPosition(top - verticalScrollBar->size().height() + height);
-            return;
-        }
-    }
-
-    scrollToBottom();
-}
-
 ChatWindow::~ChatWindow() {
 #ifdef HAVE_QXMPP
     const QXmppClient& xmppClient = XmppClient::getInstance().getXMPPClient();
@@ -128,7 +102,7 @@ ChatWindow::~ChatWindow() {
 
     const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();
     disconnect(publicChatRoom, SIGNAL(participantsChanged()), this, SLOT(participantsChanged()));
-#endif
+#endif // HAVE_QXMPP
     delete ui;
 }
 
@@ -147,10 +121,12 @@ void ChatWindow::showEvent(QShowEvent* event) {
         ui->messagePlainTextEdit->setFocus();
     }
 
+#ifdef HAVE_QXMPP
     const QXmppClient& xmppClient = XmppClient::getInstance().getXMPPClient();
     if (xmppClient.isConnected()) {
         participantsChanged();
     }
+#endif // HAVE_QXMPP
 }
 
 bool ChatWindow::eventFilter(QObject* sender, QEvent* event) {
@@ -163,14 +139,14 @@ bool ChatWindow::eventFilter(QObject* sender, QEvent* event) {
             (keyEvent->modifiers() & Qt::ShiftModifier) == 0) {
             QString messageText = ui->messagePlainTextEdit->document()->toPlainText().trimmed();
             if (!messageText.isEmpty()) {
-    #ifdef HAVE_QXMPP
+#ifdef HAVE_QXMPP
                 const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();
                 QXmppMessage message;
                 message.setTo(publicChatRoom->jid());
                 message.setType(QXmppMessage::GroupChat);
                 message.setBody(messageText);
                 XmppClient::getInstance().getXMPPClient().sendPacket(message);
-    #endif
+#endif // HAVE_QXMPP
                 QTextCursor cursor = ui->messagePlainTextEdit->textCursor();
                 cursor.select(QTextCursor::Document);
                 cursor.removeSelectedText();
@@ -187,13 +163,6 @@ bool ChatWindow::eventFilter(QObject* sender, QEvent* event) {
     return FramelessDialog::eventFilter(sender, event);
 }
 
-#ifdef HAVE_QXMPP
-QString ChatWindow::getParticipantName(const QString& participant) {
-    const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();
-    return participant.right(participant.count() - 1 - publicChatRoom->jid().count());
-}
-#endif
-
 void ChatWindow::addTimeStamp() {
     QTimeSpan timePassed = QDateTime::currentDateTime() - lastMessageStamp;
     int times[] = { timePassed.daysPart(), timePassed.hoursPart(), timePassed.minutesPart() };
@@ -246,7 +215,7 @@ void ChatWindow::connected() {
 #ifdef HAVE_QXMPP
     const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();
     connect(publicChatRoom, SIGNAL(participantsChanged()), this, SLOT(participantsChanged()));
-#endif
+#endif // HAVE_QXMPP
     startTimerForTimeStamps();
 }
 
@@ -257,6 +226,36 @@ void ChatWindow::timeout() {
 }
 
 #ifdef HAVE_QXMPP
+void ChatWindow::notificationClicked() {
+    if (parentWidget()->isMinimized()) {
+        parentWidget()->showNormal();
+    }
+    if (isHidden()) {
+        show();
+    }
+
+    // find last mention
+    int messageCount = ui->messagesVBoxLayout->count();
+    for (unsigned int i = messageCount; i > 0; i--) {
+        ChatMessageArea* area = (ChatMessageArea*)ui->messagesVBoxLayout->itemAt(i - 1)->widget();
+        QRegularExpression usernameMention(mentionRegex.arg(AccountManager::getInstance().getAccountInfo().getUsername()));
+        if (area->toPlainText().contains(usernameMention)) {
+            int top = area->geometry().top();
+            int height = area->geometry().height();
+
+            QScrollBar* verticalScrollBar = ui->messagesScrollArea->verticalScrollBar();
+            verticalScrollBar->setSliderPosition(top - verticalScrollBar->size().height() + height);
+            return;
+        }
+    }
+
+    scrollToBottom();
+}
+
+QString ChatWindow::getParticipantName(const QString& participant) {
+    const QXmppMucRoom* publicChatRoom = XmppClient::getInstance().getPublicChatRoom();
+    return participant.right(participant.count() - 1 - publicChatRoom->jid().count());
+}
 
 void ChatWindow::error(QXmppClient::Error error) {
     ui->connectingToXMPPLabel->setText(QString::number(error));
@@ -363,8 +362,7 @@ void ChatWindow::messageReceived(const QXmppMessage& message) {
         _trayIcon.showMessage(windowTitle(), message.body());
     }
 }
-
-#endif
+#endif // HAVE_QXMPP
 
 bool ChatWindow::isNearBottom() {
     QScrollBar* verticalScrollBar = ui->messagesScrollArea->verticalScrollBar();

From f3b8d04c068b9d845ec9d21921dd72ae55d85fe1 Mon Sep 17 00:00:00 2001
From: ZappoMan <bradh@konamoxt.com>
Date: Tue, 6 May 2014 09:39:14 -0700
Subject: [PATCH 02/13] fixed packet sequence number rollover

---
 libraries/octree/src/OctreePacketData.h   |  1 +
 libraries/octree/src/OctreeSceneStats.cpp | 10 ++++++----
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/libraries/octree/src/OctreePacketData.h b/libraries/octree/src/OctreePacketData.h
index d802f8e808..d704923a11 100644
--- a/libraries/octree/src/OctreePacketData.h
+++ b/libraries/octree/src/OctreePacketData.h
@@ -28,6 +28,7 @@
 
 typedef unsigned char OCTREE_PACKET_FLAGS;
 typedef uint16_t OCTREE_PACKET_SEQUENCE;
+const uint16_t MAX_OCTREE_PACKET_SEQUENCE = 65535;
 typedef quint64 OCTREE_PACKET_SENT_TIME;
 typedef uint16_t OCTREE_PACKET_INTERNAL_SECTION_SIZE;
 const int MAX_OCTREE_PACKET_SIZE = MAX_PACKET_SIZE;
diff --git a/libraries/octree/src/OctreeSceneStats.cpp b/libraries/octree/src/OctreeSceneStats.cpp
index 1dc1459771..c08e723f89 100644
--- a/libraries/octree/src/OctreeSceneStats.cpp
+++ b/libraries/octree/src/OctreeSceneStats.cpp
@@ -875,10 +875,13 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
         return; // ignore any packets that are unreasonable
     }
 
+    // determine our expected sequence number... handle rollover appropriately
+    OCTREE_PACKET_SEQUENCE expected = _incomingPacket > 0 ? _incomingLastSequence + 1 : sequence;
+
     // Guard against possible corrupted packets... with bad sequence numbers
     const int MAX_RESONABLE_SEQUENCE_OFFSET = 2000;
     const int MIN_RESONABLE_SEQUENCE_OFFSET = -2000;
-    int sequenceOffset = (sequence - _incomingLastSequence);
+    int sequenceOffset = (sequence - expected);
     if (sequenceOffset > MAX_RESONABLE_SEQUENCE_OFFSET || sequenceOffset < MIN_RESONABLE_SEQUENCE_OFFSET) {
         qDebug() << "ignoring unreasonable packet... sequence:" << sequence << "_incomingLastSequence:" << _incomingLastSequence;
         return; // ignore any packets that are unreasonable
@@ -901,7 +904,6 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
             qDebug() << "last packet duplicate got:" << sequence << "_incomingLastSequence:" << _incomingLastSequence;
         }
     } else {
-        OCTREE_PACKET_SEQUENCE expected = _incomingLastSequence+1;
         if (sequence != expected) {
             if (wantExtraDebugging) {
                 qDebug() << "out of order... got:" << sequence << "expected:" << expected;
@@ -958,9 +960,9 @@ void OctreeSceneStats::trackIncomingOctreePacket(const QByteArray& packet,
         }
     }
 
-    // only bump the last sequence if it was greater than our previous last sequence, this will keep us from
+    // only bump the last sequence if it was greater than our expected sequence, this will keep us from
     // accidentally going backwards when an out of order (recovered) packet comes in
-    if (sequence > _incomingLastSequence) {
+    if (sequence >= expected) {
         _incomingLastSequence = sequence;
     }
     

From d1a262bb56123a33646839fd9e36a1e712df9d0c Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Tue, 6 May 2014 10:02:41 -0700
Subject: [PATCH 03/13] maintenance: replace implicit casts with explicit

---
 interface/src/avatar/MyAvatar.cpp | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index adeaa30962..6b4d5aca57 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -146,7 +146,7 @@ void MyAvatar::simulate(float deltaTime) {
         boundingShape.getStartPoint(startCap);
         glm::vec3 bottomOfBoundingCapsule = startCap + (boundingShape.getRadius() / gravityLength) * _gravity;
 
-        float fallThreshold = 2.f * deltaTime * gravityLength;
+        float fallThreshold = 2.0f * deltaTime * gravityLength;
         walkingOnFloor = (glm::distance(bottomOfBoundingCapsule, _lastFloorContactPoint) < fallThreshold);
     }
 
@@ -349,8 +349,8 @@ void MyAvatar::renderHeadMouse(int screenWidth, int screenHeight) const {
     float headYaw = getHead()->getFinalYaw();
 
     float aspectRatio = (float) screenWidth / (float) screenHeight;
-    int headMouseX = screenWidth / 2.f - headYaw * aspectRatio * pixelsPerDegree;
-    int headMouseY = screenHeight / 2.f - headPitch * pixelsPerDegree;
+    int headMouseX = (int)((float)screenWidth / 2.0f - headYaw * aspectRatio * pixelsPerDegree);
+    int headMouseY = (int)((float)screenHeight / 2.0f - headPitch * pixelsPerDegree);
     
     glColor3f(1.0f, 1.0f, 1.0f);
     glDisable(GL_LINE_SMOOTH);
@@ -367,8 +367,8 @@ void MyAvatar::renderHeadMouse(int screenWidth, int screenHeight) const {
 
         float avgEyePitch = faceshift->getEstimatedEyePitch();
         float avgEyeYaw = faceshift->getEstimatedEyeYaw();
-        int eyeTargetX = (screenWidth / 2) - avgEyeYaw * aspectRatio * pixelsPerDegree;
-        int eyeTargetY = (screenHeight / 2) - avgEyePitch * pixelsPerDegree;
+        int eyeTargetX = (int)((float)(screenWidth) / 2.0f - avgEyeYaw * aspectRatio * pixelsPerDegree);
+        int eyeTargetY = (int)((float)(screenHeight) / 2.0f - avgEyePitch * pixelsPerDegree);
         
         glColor3f(0.0f, 1.0f, 1.0f);
         glDisable(GL_LINE_SMOOTH);
@@ -514,7 +514,7 @@ void MyAvatar::updateLookAtTargetAvatar() {
     //  Look at the avatar whose eyes are closest to the ray in direction of my avatar's head
     //
     _lookAtTargetAvatar.clear();
-    _targetAvatarPosition = glm::vec3(0, 0, 0);
+    _targetAvatarPosition = glm::vec3(0.0f);
     const float MIN_LOOKAT_ANGLE = PI / 4.0f;        //  Smallest angle between face and person where we will look at someone
     float smallestAngleTo = MIN_LOOKAT_ANGLE;
     foreach (const AvatarSharedPointer& avatarPointer, Application::getInstance()->getAvatarManager().getAvatarHash()) {
@@ -765,7 +765,7 @@ void MyAvatar::applyMotor(float deltaTime) {
         targetVelocity = rotation * _motorVelocity;
     }
 
-    glm::vec3 targetDirection(0.f);
+    glm::vec3 targetDirection(0.0f);
     if (glm::length2(targetVelocity) > EPSILON) {
         targetDirection = glm::normalize(targetVelocity);
     }

From 2d0e4fb94f4f542c5ecf718ef3ee6e207088de5f Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Tue, 6 May 2014 10:55:30 -0700
Subject: [PATCH 04/13] use START_LOCATION as default settings

---
 interface/src/avatar/MyAvatar.cpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index 6b4d5aca57..0ca7a9201a 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -163,7 +163,7 @@ void MyAvatar::simulate(float deltaTime) {
         // update position
         if (glm::length2(_velocity) < EPSILON) {
             _velocity = glm::vec3(0.0f);
-        } else {
+        } else { 
             _position += _velocity * deltaTime;
         }
     }
@@ -456,9 +456,9 @@ void MyAvatar::loadData(QSettings* settings) {
 
     getHead()->setBasePitch(loadSetting(settings, "headPitch", 0.0f));
 
-    _position.x = loadSetting(settings, "position_x", 0.0f);
-    _position.y = loadSetting(settings, "position_y", 0.0f);
-    _position.z = loadSetting(settings, "position_z", 0.0f);
+    _position.x = loadSetting(settings, "position_x", START_LOCATION.x);
+    _position.y = loadSetting(settings, "position_y", START_LOCATION.x);
+    _position.z = loadSetting(settings, "position_z", START_LOCATION.z);
 
     getHead()->setPupilDilation(loadSetting(settings, "pupilDilation", 0.0f));
 

From 8a630a148eab72d16892d72ea81a4e4252c1a8d2 Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Tue, 6 May 2014 11:03:51 -0700
Subject: [PATCH 05/13] fix copy-n-paste typo

---
 interface/src/avatar/MyAvatar.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index 0ca7a9201a..b52dc2c5fe 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -457,7 +457,7 @@ void MyAvatar::loadData(QSettings* settings) {
     getHead()->setBasePitch(loadSetting(settings, "headPitch", 0.0f));
 
     _position.x = loadSetting(settings, "position_x", START_LOCATION.x);
-    _position.y = loadSetting(settings, "position_y", START_LOCATION.x);
+    _position.y = loadSetting(settings, "position_y", START_LOCATION.y);
     _position.z = loadSetting(settings, "position_z", START_LOCATION.z);
 
     getHead()->setPupilDilation(loadSetting(settings, "pupilDilation", 0.0f));

From 68b0e91630247a87a3893f4a05ac520b207ebd43 Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Tue, 6 May 2014 11:09:13 -0700
Subject: [PATCH 06/13] gravity disabled by default

---
 interface/src/Menu.cpp            | 2 +-
 interface/src/avatar/MyAvatar.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/interface/src/Menu.cpp b/interface/src/Menu.cpp
index 868489b851..13b72bcdb3 100644
--- a/interface/src/Menu.cpp
+++ b/interface/src/Menu.cpp
@@ -194,7 +194,7 @@ Menu::Menu() :
                                   
     addDisabledActionAndSeparator(editMenu, "Physics");
     QObject* avatar = appInstance->getAvatar();
-    addCheckableActionToQMenuAndActionHash(editMenu, MenuOption::ObeyEnvironmentalGravity, Qt::SHIFT | Qt::Key_G, true, 
+    addCheckableActionToQMenuAndActionHash(editMenu, MenuOption::ObeyEnvironmentalGravity, Qt::SHIFT | Qt::Key_G, false, 
             avatar, SLOT(updateMotionBehaviorsFromMenu()));
 
 
diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index b52dc2c5fe..46357b1e76 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -59,7 +59,7 @@ MyAvatar::MyAvatar() :
     _bodyPitchDelta(0.0f),
     _bodyRollDelta(0.0f),
     _shouldJump(false),
-    _gravity(0.0f, -1.0f, 0.0f),
+    _gravity(0.0f, 0.0f, 0.0f),
     _distanceToNearestAvatar(std::numeric_limits<float>::max()),
     _wasPushing(false),
     _isPushing(false),

From 80ed8e7cf0332085b6ff610653a0af70ff4bde27 Mon Sep 17 00:00:00 2001
From: Andrew Meadows <andrew@highfidelity.io>
Date: Tue, 6 May 2014 14:56:16 -0700
Subject: [PATCH 07/13] disable environment gravity when not set in menu

---
 interface/src/avatar/MyAvatar.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/interface/src/avatar/MyAvatar.cpp b/interface/src/avatar/MyAvatar.cpp
index 46357b1e76..e8782fa140 100644
--- a/interface/src/avatar/MyAvatar.cpp
+++ b/interface/src/avatar/MyAvatar.cpp
@@ -1382,6 +1382,8 @@ void MyAvatar::updateMotionBehaviorsFromMenu() {
         _motionBehaviors |= AVATAR_MOTION_OBEY_ENVIRONMENTAL_GRAVITY;
         // Environmental and Local gravities are incompatible.  Environmental setting trumps local.
         _motionBehaviors &= ~AVATAR_MOTION_OBEY_LOCAL_GRAVITY;
+    } else {
+        _motionBehaviors &= ~AVATAR_MOTION_OBEY_ENVIRONMENTAL_GRAVITY;
     }
     if (! (_motionBehaviors & (AVATAR_MOTION_OBEY_ENVIRONMENTAL_GRAVITY | AVATAR_MOTION_OBEY_LOCAL_GRAVITY))) {
         setGravity(glm::vec3(0.0f));

From 353b9879b812141cc04a7900e060bee4a2536469 Mon Sep 17 00:00:00 2001
From: Andrzej Kapolka <drzej.k@gmail.com>
Date: Tue, 6 May 2014 15:15:42 -0700
Subject: [PATCH 08/13] Fix for exports from Sketchup.

---
 libraries/fbx/src/FBXReader.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/fbx/src/FBXReader.cpp b/libraries/fbx/src/FBXReader.cpp
index a21ed2627a..40a7d56c0d 100644
--- a/libraries/fbx/src/FBXReader.cpp
+++ b/libraries/fbx/src/FBXReader.cpp
@@ -817,7 +817,7 @@ ExtractedMesh extractMesh(const FBXNode& object) {
         while (endIndex < data.polygonIndices.size() && data.polygonIndices.at(endIndex++) >= 0);
 
         QPair<int, int> materialTexture((polygonIndex < materials.size()) ? materials.at(polygonIndex) : 0,
-            (polygonIndex < textures.size()) ? textures.at(polygonIndex) : 0);
+            (polygonIndex < textures.size()) ? textures.at(polygonIndex) : -1);
         int& partIndex = materialTextureParts[materialTexture];
         if (partIndex == 0) {
             data.extracted.partMaterialTextures.append(materialTexture);

From cde583452ae8b46741d0b96ce99ac05e3089afcc Mon Sep 17 00:00:00 2001
From: ZappoMan <bradh@konamoxt.com>
Date: Tue, 6 May 2014 15:31:45 -0700
Subject: [PATCH 09/13] make model server not oversend data

---
 libraries/models/src/ModelTree.cpp        | 117 +++++----
 libraries/models/src/ModelTreeElement.cpp |   3 +-
 libraries/octree/src/Octree.cpp           | 290 ++++++++++++----------
 libraries/octree/src/Octree.h             |  30 ++-
 4 files changed, 241 insertions(+), 199 deletions(-)

diff --git a/libraries/models/src/ModelTree.cpp b/libraries/models/src/ModelTree.cpp
index 236138e2a8..b624b67016 100644
--- a/libraries/models/src/ModelTree.cpp
+++ b/libraries/models/src/ModelTree.cpp
@@ -74,31 +74,48 @@ bool ModelTree::findAndDeleteOperation(OctreeElement* element, void* extraData)
     return true;
 }
 
-
-class FindAndUpdateModelArgs {
+class FindAndUpdateModelOperator : public RecurseOctreeOperator {
 public:
-    const ModelItem& searchModel;
-    bool found;
+    FindAndUpdateModelOperator(const ModelItem& searchModel);
+    virtual bool PreRecursion(OctreeElement* element);
+    virtual bool PostRecursion(OctreeElement* element);
+    bool wasFound() const { return _found; }
+private:
+    const ModelItem& _searchModel;
+    bool _found;
 };
 
-bool ModelTree::findAndUpdateOperation(OctreeElement* element, void* extraData) {
-    FindAndUpdateModelArgs* args = static_cast<FindAndUpdateModelArgs*>(extraData);
+FindAndUpdateModelOperator::FindAndUpdateModelOperator(const ModelItem& searchModel) :
+    _searchModel(searchModel),
+    _found(false) {
+};
+
+bool FindAndUpdateModelOperator::PreRecursion(OctreeElement* element) {
     ModelTreeElement* modelTreeElement = static_cast<ModelTreeElement*>(element);
     // Note: updateModel() will only operate on correctly found models
-    if (modelTreeElement->updateModel(args->searchModel)) {
-        args->found = true;
+    if (modelTreeElement->updateModel(_searchModel)) {
+        _found = true;
         return false; // stop searching
     }
-    return true;
+
+    return !_found; // if we haven't yet found it, keep looking
+}
+
+bool FindAndUpdateModelOperator::PostRecursion(OctreeElement* element) {
+    if (_found) {
+        element->markWithChangedTime();
+    }
+    return !_found; // if we haven't yet found it, keep looking
 }
 
 void ModelTree::storeModel(const ModelItem& model, const SharedNodePointer& senderNode) {
     // First, look for the existing model in the tree..
-    FindAndUpdateModelArgs args = { model, false };
-    recurseTreeWithOperation(findAndUpdateOperation, &args);
+    FindAndUpdateModelOperator theOperator(model);
+    recurseTreeWithOperator(&theOperator);
+    
 
     // if we didn't find it in the tree, then store it...
-    if (!args.found) {
+    if (!theOperator.wasFound()) {
         glm::vec3 position = model.getPosition();
         float size = std::max(MINIMUM_MODEL_ELEMENT_SIZE, model.getRadius());
 
@@ -109,38 +126,47 @@ void ModelTree::storeModel(const ModelItem& model, const SharedNodePointer& send
     _isDirty = true;
 }
 
-class FindAndUpdateModelWithIDandPropertiesArgs {
+
+class FindAndUpdateModelWithIDandPropertiesOperator : public RecurseOctreeOperator {
 public:
-    const ModelItemID& modelID;
-    const ModelItemProperties& properties;
-    bool found;
+    FindAndUpdateModelWithIDandPropertiesOperator(const ModelItemID& modelID, const ModelItemProperties& properties);
+    virtual bool PreRecursion(OctreeElement* element);
+    virtual bool PostRecursion(OctreeElement* element);
+private:
+    const ModelItemID& _modelID;
+    const ModelItemProperties& _properties;
+    bool _found;
 };
 
-bool ModelTree::findAndUpdateWithIDandPropertiesOperation(OctreeElement* element, void* extraData) {
-    FindAndUpdateModelWithIDandPropertiesArgs* args = static_cast<FindAndUpdateModelWithIDandPropertiesArgs*>(extraData);
+FindAndUpdateModelWithIDandPropertiesOperator::FindAndUpdateModelWithIDandPropertiesOperator(const ModelItemID& modelID, 
+    const ModelItemProperties& properties) :
+    _modelID(modelID),
+    _properties(properties),
+    _found(false) {
+};
+
+bool FindAndUpdateModelWithIDandPropertiesOperator::PreRecursion(OctreeElement* element) {
     ModelTreeElement* modelTreeElement = static_cast<ModelTreeElement*>(element);
+
     // Note: updateModel() will only operate on correctly found models
-    if (modelTreeElement->updateModel(args->modelID, args->properties)) {
-        args->found = true;
+    if (modelTreeElement->updateModel(_modelID, _properties)) {
+        _found = true;
         return false; // stop searching
     }
+    return !_found; // if we haven't yet found it, keep looking
+}
 
-    // if we've found our model stop searching
-    if (args->found) {
-        return false;
+bool FindAndUpdateModelWithIDandPropertiesOperator::PostRecursion(OctreeElement* element) {
+    if (_found) {
+        element->markWithChangedTime();
     }
-
-    return true;
+    return !_found; // if we haven't yet found it, keep looking
 }
 
 void ModelTree::updateModel(const ModelItemID& modelID, const ModelItemProperties& properties) {
-    // First, look for the existing model in the tree..
-    FindAndUpdateModelWithIDandPropertiesArgs args = { modelID, properties, false };
-    recurseTreeWithOperation(findAndUpdateWithIDandPropertiesOperation, &args);
-    // if we found it in the tree, then mark the tree as dirty
-    if (args.found) {
-        _isDirty = true;
-    }
+    // Look for the existing model in the tree..
+    FindAndUpdateModelWithIDandPropertiesOperator theOperator(modelID, properties);
+    recurseTreeWithOperator(&theOperator);
 }
 
 void ModelTree::addModel(const ModelItemID& modelID, const ModelItemProperties& properties) {
@@ -464,29 +490,12 @@ void ModelTree::update() {
     lockForWrite();
     _isDirty = true;
 
-    ModelTreeUpdateArgs args = { };
-    recurseTreeWithOperation(updateOperation, &args);
+    // TODO: we don't need to update models yet, but when we do, for example 
+    // when we add animation support, we will revisit this code.
+    //ModelTreeUpdateArgs args = { };
+    //recurseTreeWithOperation(updateOperation, &args);
 
-    // now add back any of the models that moved elements....
-    int movingModels = args._movingModels.size();
-    for (int i = 0; i < movingModels; i++) {
-        bool shouldDie = args._movingModels[i].getShouldDie();
-
-        // if the model is still inside our total bounds, then re-add it
-        AABox treeBounds = getRoot()->getAABox();
-
-        if (!shouldDie && treeBounds.contains(args._movingModels[i].getPosition())) {
-            storeModel(args._movingModels[i]);
-        } else {
-            uint32_t modelID = args._movingModels[i].getID();
-            quint64 deletedAt = usecTimestampNow();
-            _recentlyDeletedModelsLock.lockForWrite();
-            _recentlyDeletedModelItemIDs.insert(deletedAt, modelID);
-            _recentlyDeletedModelsLock.unlock();
-        }
-    }
-
-    // prune the tree...
+    // Now is a reasonable time to prune the tree...
     recurseTreeWithOperation(pruneOperation, NULL);
     unlock();
 }
diff --git a/libraries/models/src/ModelTreeElement.cpp b/libraries/models/src/ModelTreeElement.cpp
index 687199827c..0327d8a0c4 100644
--- a/libraries/models/src/ModelTreeElement.cpp
+++ b/libraries/models/src/ModelTreeElement.cpp
@@ -137,6 +137,7 @@ bool ModelTreeElement::updateModel(const ModelItem& model) {
                             difference, debug::valueOf(model.isNewlyCreated()) );
                 }
                 thisModel.copyChangedProperties(model);
+                markWithChangedTime();
             } else {
                 if (wantDebug) {
                     qDebug(">>> IGNORING SERVER!!! Would've caused jutter! <<<  "
@@ -167,7 +168,7 @@ bool ModelTreeElement::updateModel(const ModelItemID& modelID, const ModelItemPr
         }
         if (found) {
             thisModel.setProperties(properties);
-
+            markWithChangedTime(); // mark our element as changed..
             const bool wantDebug = false;
             if (wantDebug) {
                 uint64_t now = usecTimestampNow();
diff --git a/libraries/octree/src/Octree.cpp b/libraries/octree/src/Octree.cpp
index 266447e27e..7f5834fa6f 100644
--- a/libraries/octree/src/Octree.cpp
+++ b/libraries/octree/src/Octree.cpp
@@ -50,33 +50,33 @@ Octree::Octree(bool shouldReaverage) :
 }
 
 Octree::~Octree() {
-    // delete the children of the root node
+    // delete the children of the root element
     // this recursively deletes the tree
     delete _rootNode;
 }
 
-// Recurses voxel tree calling the RecurseOctreeOperation function for each node.
+// Recurses voxel tree calling the RecurseOctreeOperation function for each element.
 // stops recursion if operation function returns false.
 void Octree::recurseTreeWithOperation(RecurseOctreeOperation operation, void* extraData) {
     recurseNodeWithOperation(_rootNode, operation, extraData);
 }
 
-// Recurses voxel tree calling the RecurseOctreePostFixOperation function for each node in post-fix order.
+// Recurses voxel tree calling the RecurseOctreePostFixOperation function for each element in post-fix order.
 void Octree::recurseTreeWithPostOperation(RecurseOctreeOperation operation, void* extraData) {
     recurseNodeWithPostOperation(_rootNode, operation, extraData);
 }
 
-// Recurses voxel node with an operation function
-void Octree::recurseNodeWithOperation(OctreeElement* node, RecurseOctreeOperation operation, void* extraData,
+// Recurses voxel element with an operation function
+void Octree::recurseNodeWithOperation(OctreeElement* element, RecurseOctreeOperation operation, void* extraData,
                         int recursionCount) {
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
         qDebug() << "Octree::recurseNodeWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
         return;
     }
 
-    if (operation(node, extraData)) {
+    if (operation(element, extraData)) {
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-            OctreeElement* child = node->getChildAtIndex(i);
+            OctreeElement* child = element->getChildAtIndex(i);
             if (child) {
                 recurseNodeWithOperation(child, operation, extraData, recursionCount+1);
             }
@@ -84,8 +84,8 @@ void Octree::recurseNodeWithOperation(OctreeElement* node, RecurseOctreeOperatio
     }
 }
 
-// Recurses voxel node with an operation function
-void Octree::recurseNodeWithPostOperation(OctreeElement* node, RecurseOctreeOperation operation, void* extraData,
+// Recurses voxel element with an operation function
+void Octree::recurseNodeWithPostOperation(OctreeElement* element, RecurseOctreeOperation operation, void* extraData,
                         int recursionCount) {
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
         qDebug() << "Octree::recurseNodeWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!\n";
@@ -93,15 +93,15 @@ void Octree::recurseNodeWithPostOperation(OctreeElement* node, RecurseOctreeOper
     }
 
     for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-        OctreeElement* child = node->getChildAtIndex(i);
+        OctreeElement* child = element->getChildAtIndex(i);
         if (child) {
             recurseNodeWithPostOperation(child, operation, extraData, recursionCount+1);
         }
     }
-	operation(node, extraData);
+	operation(element, extraData);
 }
 
-// Recurses voxel tree calling the RecurseOctreeOperation function for each node.
+// Recurses voxel tree calling the RecurseOctreeOperation function for each element.
 // stops recursion if operation function returns false.
 void Octree::recurseTreeWithOperationDistanceSorted(RecurseOctreeOperation operation,
                                                        const glm::vec3& point, void* extraData) {
@@ -109,8 +109,8 @@ void Octree::recurseTreeWithOperationDistanceSorted(RecurseOctreeOperation opera
     recurseNodeWithOperationDistanceSorted(_rootNode, operation, point, extraData);
 }
 
-// Recurses voxel node with an operation function
-void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* node, RecurseOctreeOperation operation,
+// Recurses voxel element with an operation function
+void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* element, RecurseOctreeOperation operation,
                                                        const glm::vec3& point, void* extraData, int recursionCount) {
 
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
@@ -118,7 +118,7 @@ void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* node, Recurse
         return;
     }
 
-    if (operation(node, extraData)) {
+    if (operation(element, extraData)) {
         // determine the distance sorted order of our children
         OctreeElement* sortedChildren[NUMBER_OF_CHILDREN] = { NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
         float distancesToChildren[NUMBER_OF_CHILDREN] = { 0, 0, 0, 0, 0, 0, 0, 0 };
@@ -126,7 +126,7 @@ void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* node, Recurse
         int currentCount = 0;
 
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-            OctreeElement* childNode = node->getChildAtIndex(i);
+            OctreeElement* childNode = element->getChildAtIndex(i);
             if (childNode) {
                 // chance to optimize, doesn't need to be actual distance!! Could be distance squared
                 float distanceSquared = childNode->distanceSquareToPoint(point);
@@ -149,6 +149,30 @@ void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* node, Recurse
     }
 }
 
+void Octree::recurseTreeWithOperator(RecurseOctreeOperator* operatorObject) {
+    recurseNodeWithOperator(_rootNode, operatorObject);
+}
+
+bool Octree::recurseNodeWithOperator(OctreeElement* element, RecurseOctreeOperator* operatorObject, int recursionCount) {
+    if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
+        qDebug() << "Octree::recurseNodeWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
+        return false;
+    }
+
+    if (operatorObject->PreRecursion(element)) {
+        for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
+            OctreeElement* child = element->getChildAtIndex(i);
+            if (child) {
+                if (!recurseNodeWithOperator(child, operatorObject, recursionCount + 1)) {
+                    break; // stop recursing if operator returns false...
+                }
+            }
+        }
+    }
+    
+    return operatorObject->PostRecursion(element);
+}
+
 
 OctreeElement* Octree::nodeForOctalCode(OctreeElement* ancestorNode,
                                        const unsigned char* needleCode, OctreeElement** parentOfFoundNode) const {
@@ -170,8 +194,8 @@ OctreeElement* Octree::nodeForOctalCode(OctreeElement* ancestorNode,
                     *parentOfFoundNode = ancestorNode;
                 }
                 // the fact that the number of sections is equivalent does not always guarantee
-                // that this is the same node, however due to the recursive traversal
-                // we know that this is our node
+                // that this is the same element, however due to the recursive traversal
+                // we know that this is our element
                 return childNode;
             } else {
                 // we need to go deeper
@@ -180,15 +204,15 @@ OctreeElement* Octree::nodeForOctalCode(OctreeElement* ancestorNode,
         }
     }
 
-    // we've been given a code we don't have a node for
-    // return this node as the last created parent
+    // we've been given a code we don't have a element for
+    // return this element as the last created parent
     return ancestorNode;
 }
 
-// returns the node created!
+// returns the element created!
 OctreeElement* Octree::createMissingNode(OctreeElement* lastParentNode, const unsigned char* codeToReach) {
     int indexOfNewChild = branchIndexWithDescendant(lastParentNode->getOctalCode(), codeToReach);
-    // If this parent node is a leaf, then you know the child path doesn't exist, so deal with
+    // If this parent element is a leaf, then you know the child path doesn't exist, so deal with
     // breaking up the leaf first, which will also create a child path
     if (lastParentNode->requiresSplit()) {
         lastParentNode->splitChildren();
@@ -207,7 +231,7 @@ OctreeElement* Octree::createMissingNode(OctreeElement* lastParentNode, const un
 
 int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* nodeData, int bytesLeftToRead,
                             ReadBitstreamToTreeParams& args) {
-    // give this destination node the child mask from the packet
+    // give this destination element the child mask from the packet
     const unsigned char ALL_CHILDREN_ASSUMED_TO_EXIST = 0xFF;
     unsigned char colorInPacketMask = *nodeData;
 
@@ -230,7 +254,7 @@ int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* no
                 bytesRead += childNodeAt->readElementDataFromBuffer(nodeData + bytesRead, bytesLeftToRead, args);
                 childNodeAt->setSourceUUID(args.sourceUUID);
 
-                // if we had a local version of the node already, it's possible that we have it already but
+                // if we had a local version of the element already, it's possible that we have it already but
                 // with the same color data, so this won't count as a change. To address this we check the following
                 if (!childNodeAt->isDirty() && childNodeAt->getShouldRender() && !childNodeAt->isRendered()) {
                     childNodeAt->setDirtyBit(); // force dirty!
@@ -244,7 +268,7 @@ int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* no
         }
     }
 
-    // give this destination node the child mask from the packet
+    // give this destination element the child mask from the packet
     unsigned char childrenInTreeMask = args.includeExistsBits ? *(nodeData + bytesRead) : ALL_CHILDREN_ASSUMED_TO_EXIST;
     unsigned char childMask = *(nodeData + bytesRead + (args.includeExistsBits ? sizeof(childrenInTreeMask) : 0));
 
@@ -274,7 +298,7 @@ int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* no
     if (args.includeExistsBits) {
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
             // now also check the childrenInTreeMask, if the mask is missing the bit, then it means we need to delete this child
-            // subtree/node, because it shouldn't actually exist in the tree.
+            // subtree/element, because it shouldn't actually exist in the tree.
             if (!oneAtBit(childrenInTreeMask, i) && destinationNode->getChildAtIndex(i)) {
                 destinationNode->safeDeepDeleteChildAtIndex(i);
                 _isDirty = true; // by definition!
@@ -289,7 +313,7 @@ void Octree::readBitstreamToTree(const unsigned char * bitstream, unsigned long
     int bytesRead = 0;
     const unsigned char* bitstreamAt = bitstream;
 
-    // If destination node is not included, set it to root
+    // If destination element is not included, set it to root
     if (!args.destinationNode) {
         args.destinationNode = _rootNode;
     }
@@ -304,7 +328,7 @@ void Octree::readBitstreamToTree(const unsigned char * bitstream, unsigned long
             // if the octal code returned is not on the same level as
             // the code being searched for, we have OctreeElements to create
 
-            // Note: we need to create this node relative to root, because we're assuming that the bitstream for the initial
+            // Note: we need to create this element relative to root, because we're assuming that the bitstream for the initial
             // octal code is always relative to root!
             bitstreamRootNode = createMissingNode(args.destinationNode, (unsigned char*) bitstreamAt);
             if (bitstreamRootNode->isDirty()) {
@@ -347,9 +371,9 @@ public:
 };
 
 // Note: uses the codeColorBuffer format, but the color's are ignored, because
-// this only finds and deletes the node from the tree.
+// this only finds and deletes the element from the tree.
 void Octree::deleteOctalCodeFromTree(const unsigned char* codeBuffer, bool collapseEmptyTrees) {
-    // recurse the tree while decoding the codeBuffer, once you find the node in question, recurse
+    // recurse the tree while decoding the codeBuffer, once you find the element in question, recurse
     // back and implement color reaveraging, and marking of lastChanged
     DeleteOctalCodeFromTreeArgs args;
     args.collapseEmptyTrees = collapseEmptyTrees;
@@ -358,18 +382,16 @@ void Octree::deleteOctalCodeFromTree(const unsigned char* codeBuffer, bool colla
     args.deleteLastChild    = false;
     args.pathChanged        = false;
 
-    OctreeElement* node = _rootNode;
-
-    deleteOctalCodeFromTreeRecursion(node, &args);
+    deleteOctalCodeFromTreeRecursion(_rootNode, &args);
 }
 
-void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* node, void* extraData) {
+void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extraData) {
     DeleteOctalCodeFromTreeArgs* args = (DeleteOctalCodeFromTreeArgs*)extraData;
 
-    int lengthOfNodeCode = numberOfThreeBitSectionsInCode(node->getOctalCode());
+    int lengthOfNodeCode = numberOfThreeBitSectionsInCode(element->getOctalCode());
 
     // Since we traverse the tree in code order, we know that if our code
-    // matches, then we've reached  our target node.
+    // matches, then we've reached  our target element.
     if (lengthOfNodeCode == args->lengthOfCode) {
         // we've reached our target, depending on how we're called we may be able to operate on it
         // it here, we need to recurse up, and delete it there. So we handle these cases the same to keep
@@ -378,16 +400,16 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* node, void* extraDa
         return;
     }
 
-    // Ok, we know we haven't reached our target node yet, so keep looking
-    int childIndex = branchIndexWithDescendant(node->getOctalCode(), args->codeBuffer);
-    OctreeElement* childNode = node->getChildAtIndex(childIndex);
+    // Ok, we know we haven't reached our target element yet, so keep looking
+    int childIndex = branchIndexWithDescendant(element->getOctalCode(), args->codeBuffer);
+    OctreeElement* childNode = element->getChildAtIndex(childIndex);
 
-    // If there is no child at the target location, and the current parent node is a colored leaf,
+    // If there is no child at the target location, and the current parent element is a colored leaf,
     // then it means we were asked to delete a child out of a larger leaf voxel.
     // We support this by breaking up the parent voxel into smaller pieces.
-    if (!childNode && node->requiresSplit()) {
+    if (!childNode && element->requiresSplit()) {
         // we need to break up ancestors until we get to the right level
-        OctreeElement* ancestorNode = node;
+        OctreeElement* ancestorNode = element;
         while (true) {
             int index = branchIndexWithDescendant(ancestorNode->getOctalCode(), args->codeBuffer);
 
@@ -425,7 +447,7 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* node, void* extraDa
 
     // If the lower level determined it needs to be deleted, then we should delete now.
     if (args->deleteLastChild) {
-        node->deleteChildAtIndex(childIndex); // note: this will track dirtiness and lastChanged for this node
+        element->deleteChildAtIndex(childIndex); // note: this will track dirtiness and lastChanged for this element
 
         // track our tree dirtiness
         _isDirty = true;
@@ -433,11 +455,11 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* node, void* extraDa
         // track that path has changed
         args->pathChanged = true;
 
-        // If we're in collapseEmptyTrees mode, and this was the last child of this node, then we also want
-        // to delete this node.  This will collapse the empty tree above us.
-        if (args->collapseEmptyTrees && node->getChildCount() == 0) {
+        // If we're in collapseEmptyTrees mode, and this was the last child of this element, then we also want
+        // to delete this element.  This will collapse the empty tree above us.
+        if (args->collapseEmptyTrees && element->getChildCount() == 0) {
             // Can't delete the root this way.
-            if (node == _rootNode) {
+            if (element == _rootNode) {
                 args->deleteLastChild = false; // reset so that further up the unwinding chain we don't do anything
             }
         } else {
@@ -445,10 +467,10 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* node, void* extraDa
         }
     }
 
-    // If the lower level did some work, then we need to let this node know, so it can
+    // If the lower level did some work, then we need to let this element know, so it can
     // do any bookkeeping it wants to, like color re-averaging, time stamp marking, etc
     if (args->pathChanged) {
-        node->handleSubtreeChanged(this);
+        element->handleSubtreeChanged(this);
     }
 }
 
@@ -529,30 +551,30 @@ void Octree::reaverageOctreeElements(OctreeElement* startNode) {
 
 OctreeElement* Octree::getOctreeElementAt(float x, float y, float z, float s) const {
     unsigned char* octalCode = pointToOctalCode(x,y,z,s);
-    OctreeElement* node = nodeForOctalCode(_rootNode, octalCode, NULL);
-    if (*node->getOctalCode() != *octalCode) {
-        node = NULL;
+    OctreeElement* element = nodeForOctalCode(_rootNode, octalCode, NULL);
+    if (*element->getOctalCode() != *octalCode) {
+        element = NULL;
     }
     delete[] octalCode; // cleanup memory
 #ifdef HAS_AUDIT_CHILDREN
-    if (node) {
-        node->auditChildren("Octree::getOctreeElementAt()");
+    if (element) {
+        element->auditChildren("Octree::getOctreeElementAt()");
     }
 #endif // def HAS_AUDIT_CHILDREN
-    return node;
+    return element;
 }
 
 OctreeElement* Octree::getOctreeEnclosingElementAt(float x, float y, float z, float s) const {
     unsigned char* octalCode = pointToOctalCode(x,y,z,s);
-    OctreeElement* node = nodeForOctalCode(_rootNode, octalCode, NULL);
+    OctreeElement* element = nodeForOctalCode(_rootNode, octalCode, NULL);
     
     delete[] octalCode; // cleanup memory
 #ifdef HAS_AUDIT_CHILDREN
-    if (node) {
-        node->auditChildren("Octree::getOctreeElementAt()");
+    if (element) {
+        element->auditChildren("Octree::getOctreeElementAt()");
     }
 #endif // def HAS_AUDIT_CHILDREN
-    return node;
+    return element;
 }
 
 
@@ -566,26 +588,26 @@ class RayArgs {
 public:
     glm::vec3 origin;
     glm::vec3 direction;
-    OctreeElement*& node;
+    OctreeElement*& element;
     float& distance;
     BoxFace& face;
     bool found;
 };
 
-bool findRayIntersectionOp(OctreeElement* node, void* extraData) {
+bool findRayIntersectionOp(OctreeElement* element, void* extraData) {
     RayArgs* args = static_cast<RayArgs*>(extraData);
-    AABox box = node->getAABox();
+    AABox box = element->getAABox();
     float distance;
     BoxFace face;
     if (!box.findRayIntersection(args->origin, args->direction, distance, face)) {
         return false;
     }
-    if (!node->isLeaf()) {
+    if (!element->isLeaf()) {
         return true; // recurse on children
     }
     distance *= TREE_SCALE;
-    if (node->hasContent() && (!args->found || distance < args->distance)) {
-        args->node = node;
+    if (element->hasContent() && (!args->found || distance < args->distance)) {
+        args->element = element;
         args->distance = distance;
         args->face = face;
         args->found = true;
@@ -594,9 +616,9 @@ bool findRayIntersectionOp(OctreeElement* node, void* extraData) {
 }
 
 bool Octree::findRayIntersection(const glm::vec3& origin, const glm::vec3& direction,
-                                    OctreeElement*& node, float& distance, BoxFace& face, 
+                                    OctreeElement*& element, float& distance, BoxFace& face, 
                                     Octree::lockType lockType, bool* accurateResult) {
-    RayArgs args = { origin / (float)(TREE_SCALE), direction, node, distance, face, false};
+    RayArgs args = { origin / (float)(TREE_SCALE), direction, element, distance, face, false};
 
     bool gotLock = false;
     if (lockType == Octree::Lock) {
@@ -712,18 +734,18 @@ public:
     bool found;
 };
 
-bool findCapsulePenetrationOp(OctreeElement* node, void* extraData) {
+bool findCapsulePenetrationOp(OctreeElement* element, void* extraData) {
     CapsuleArgs* args = static_cast<CapsuleArgs*>(extraData);
 
     // coarse check against bounds
-    const AABox& box = node->getAABox();
+    const AABox& box = element->getAABox();
     if (!box.expandedIntersectsSegment(args->start, args->end, args->radius)) {
         return false;
     }
-    if (!node->isLeaf()) {
+    if (!element->isLeaf()) {
         return true; // recurse on children
     }
-    if (node->hasContent()) {
+    if (element->hasContent()) {
         glm::vec3 nodePenetration;
         if (box.findCapsulePenetration(args->start, args->end, args->radius, nodePenetration)) {
             args->penetration = addPenetrations(args->penetration, nodePenetration * (float)(TREE_SCALE));
@@ -733,19 +755,19 @@ bool findCapsulePenetrationOp(OctreeElement* node, void* extraData) {
     return false;
 }
 
-bool findShapeCollisionsOp(OctreeElement* node, void* extraData) {
+bool findShapeCollisionsOp(OctreeElement* element, void* extraData) {
     ShapeArgs* args = static_cast<ShapeArgs*>(extraData);
 
     // coarse check against bounds
-    AABox cube = node->getAABox();
+    AABox cube = element->getAABox();
     cube.scale(TREE_SCALE);
     if (!cube.expandedContains(args->shape->getPosition(), args->shape->getBoundingRadius())) {
         return false;
     }
-    if (!node->isLeaf()) {
+    if (!element->isLeaf()) {
         return true; // recurse on children
     }
-    if (node->hasContent()) {
+    if (element->hasContent()) {
         if (ShapeCollider::collideShapeWithAACube(args->shape, cube.calcCenter(), cube.getScale(), args->collisions)) {
             args->found = true;
             return true;
@@ -834,7 +856,7 @@ bool getElementEnclosingOperation(OctreeElement* element, void* extraData) {
     AABox elementBox = element->getAABox();
     if (elementBox.contains(args->point)) {
         if (element->hasContent() && element->isLeaf()) {
-            // we've reached a solid leaf containing the point, return the node.
+            // we've reached a solid leaf containing the point, return the element.
             args->element = element;
             return false;
         }
@@ -878,22 +900,22 @@ OctreeElement* Octree::getElementEnclosingPoint(const glm::vec3& point, Octree::
 
 
 
-int Octree::encodeTreeBitstream(OctreeElement* node,
+int Octree::encodeTreeBitstream(OctreeElement* element,
                         OctreePacketData* packetData, OctreeElementBag& bag,
                         EncodeBitstreamParams& params) {
 
     // How many bytes have we written so far at this level;
     int bytesWritten = 0;
 
-    // you can't call this without a valid node
-    if (!node) {
-        qDebug("WARNING! encodeTreeBitstream() called with node=NULL");
+    // you can't call this without a valid element
+    if (!element) {
+        qDebug("WARNING! encodeTreeBitstream() called with element=NULL");
         params.stopReason = EncodeBitstreamParams::NULL_NODE;
         return bytesWritten;
     }
 
-    // If we're at a node that is out of view, then we can return, because no nodes below us will be in view!
-    if (params.viewFrustum && !node->isInView(*params.viewFrustum)) {
+    // If we're at a element that is out of view, then we can return, because no nodes below us will be in view!
+    if (params.viewFrustum && !element->isInView(*params.viewFrustum)) {
         params.stopReason = EncodeBitstreamParams::OUT_OF_VIEW;
         return bytesWritten;
     }
@@ -902,7 +924,7 @@ int Octree::encodeTreeBitstream(OctreeElement* node,
     bool roomForOctalCode = false; // assume the worst
     int codeLength = 1; // assume root
     if (params.chopLevels) {
-        unsigned char* newCode = chopOctalCode(node->getOctalCode(), params.chopLevels);
+        unsigned char* newCode = chopOctalCode(element->getOctalCode(), params.chopLevels);
         roomForOctalCode = packetData->startSubTree(newCode);
 
         if (newCode) {
@@ -912,13 +934,13 @@ int Octree::encodeTreeBitstream(OctreeElement* node,
             codeLength = 1;
         }
     } else {
-        roomForOctalCode = packetData->startSubTree(node->getOctalCode());
-        codeLength = bytesRequiredForCodeLength(numberOfThreeBitSectionsInCode(node->getOctalCode()));
+        roomForOctalCode = packetData->startSubTree(element->getOctalCode());
+        codeLength = bytesRequiredForCodeLength(numberOfThreeBitSectionsInCode(element->getOctalCode()));
     }
 
     // If the octalcode couldn't fit, then we can return, because no nodes below us will fit...
     if (!roomForOctalCode) {
-        bag.insert(node); // add the node back to the bag so it will eventually get included
+        bag.insert(element); // add the element back to the bag so it will eventually get included
         params.stopReason = EncodeBitstreamParams::DIDNT_FIT;
         return bytesWritten;
     }
@@ -927,15 +949,15 @@ int Octree::encodeTreeBitstream(OctreeElement* node,
 
     int currentEncodeLevel = 0;
 
-    // record some stats, this is the one node that we won't record below in the recursion function, so we need to
+    // record some stats, this is the one element that we won't record below in the recursion function, so we need to
     // track it here
     if (params.stats) {
-        params.stats->traversed(node);
+        params.stats->traversed(element);
     }
 
     ViewFrustum::location parentLocationThisView = ViewFrustum::INTERSECT; // assume parent is in view, but not fully
 
-    int childBytesWritten = encodeTreeBitstreamRecursion(node, packetData, bag, params,
+    int childBytesWritten = encodeTreeBitstreamRecursion(element, packetData, bag, params,
                                                             currentEncodeLevel, parentLocationThisView);
 
     // if childBytesWritten == 1 then something went wrong... that's not possible
@@ -966,16 +988,16 @@ int Octree::encodeTreeBitstream(OctreeElement* node,
     return bytesWritten;
 }
 
-int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
+int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                                             OctreePacketData* packetData, OctreeElementBag& bag,
                                             EncodeBitstreamParams& params, int& currentEncodeLevel,
                                             const ViewFrustum::location& parentLocationThisView) const {
     // How many bytes have we written so far at this level;
     int bytesAtThisLevel = 0;
 
-    // you can't call this without a valid node
-    if (!node) {
-        qDebug("WARNING! encodeTreeBitstreamRecursion() called with node=NULL");
+    // you can't call this without a valid element
+    if (!element) {
+        qDebug("WARNING! encodeTreeBitstreamRecursion() called with element=NULL");
         params.stopReason = EncodeBitstreamParams::NULL_NODE;
         return bytesAtThisLevel;
     }
@@ -995,7 +1017,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
     if (params.jurisdictionMap) {
         // here's how it works... if we're currently above our root jurisdiction, then we proceed normally.
         // but once we're in our own jurisdiction, then we need to make sure we're not below it.
-        if (JurisdictionMap::BELOW == params.jurisdictionMap->isMyJurisdiction(node->getOctalCode(), CHECK_NODE_ONLY)) {
+        if (JurisdictionMap::BELOW == params.jurisdictionMap->isMyJurisdiction(element->getOctalCode(), CHECK_NODE_ONLY)) {
             params.stopReason = EncodeBitstreamParams::OUT_OF_JURISDICTION;
             return bytesAtThisLevel;
         }
@@ -1005,14 +1027,14 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
 
     // caller can pass NULL as viewFrustum if they want everything
     if (params.viewFrustum) {
-        float distance = node->distanceToCamera(*params.viewFrustum);
-        float boundaryDistance = boundaryDistanceForRenderLevel(node->getLevel() + params.boundaryLevelAdjust,
+        float distance = element->distanceToCamera(*params.viewFrustum);
+        float boundaryDistance = boundaryDistanceForRenderLevel(element->getLevel() + params.boundaryLevelAdjust,
                                         params.octreeElementSizeScale);
 
         // If we're too far away for our render level, then just return
         if (distance >= boundaryDistance) {
             if (params.stats) {
-                params.stats->skippedDistance(node);
+                params.stats->skippedDistance(element);
             }
             params.stopReason = EncodeBitstreamParams::LOD_SKIP;
             return bytesAtThisLevel;
@@ -1022,15 +1044,15 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
         // if we are INSIDE, INTERSECT, or OUTSIDE
         if (parentLocationThisView != ViewFrustum::INSIDE) {
             assert(parentLocationThisView != ViewFrustum::OUTSIDE); // we shouldn't be here if our parent was OUTSIDE!
-            nodeLocationThisView = node->inFrustum(*params.viewFrustum);
+            nodeLocationThisView = element->inFrustum(*params.viewFrustum);
         }
 
-        // If we're at a node that is out of view, then we can return, because no nodes below us will be in view!
+        // If we're at a element that is out of view, then we can return, because no nodes below us will be in view!
         // although technically, we really shouldn't ever be here, because our callers shouldn't be calling us if
         // we're out of view
         if (nodeLocationThisView == ViewFrustum::OUTSIDE) {
             if (params.stats) {
-                params.stats->skippedOutOfView(node);
+                params.stats->skippedOutOfView(element);
             }
             params.stopReason = EncodeBitstreamParams::OUT_OF_VIEW;
             return bytesAtThisLevel;
@@ -1041,10 +1063,10 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
         bool wasInView = false;
 
         if (params.deltaViewFrustum && params.lastViewFrustum) {
-            ViewFrustum::location location = node->inFrustum(*params.lastViewFrustum);
+            ViewFrustum::location location = element->inFrustum(*params.lastViewFrustum);
 
             // If we're a leaf, then either intersect or inside is considered "formerly in view"
-            if (node->isLeaf()) {
+            if (element->isLeaf()) {
                 wasInView = location != ViewFrustum::OUTSIDE;
             } else {
                 wasInView = location == ViewFrustum::INSIDE;
@@ -1055,8 +1077,8 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
             // to it, and so therefore it may now be visible from an LOD perspective, in which case we don't consider it
             // as "was in view"...
             if (wasInView) {
-                float distance = node->distanceToCamera(*params.lastViewFrustum);
-                float boundaryDistance = boundaryDistanceForRenderLevel(node->getLevel() + params.boundaryLevelAdjust,
+                float distance = element->distanceToCamera(*params.lastViewFrustum);
+                float boundaryDistance = boundaryDistanceForRenderLevel(element->getLevel() + params.boundaryLevelAdjust,
                                                                             params.octreeElementSizeScale);
                 if (distance >= boundaryDistance) {
                     // This would have been invisible... but now should be visible (we wouldn't be here otherwise)...
@@ -1066,11 +1088,11 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
         }
 
         // If we were previously in the view, then we normally will return out of here and stop recursing. But
-        // if we're in deltaViewFrustum mode, and this node has changed since it was last sent, then we do
+        // if we're in deltaViewFrustum mode, and this element has changed since it was last sent, then we do
         // need to send it.
-        if (wasInView && !(params.deltaViewFrustum && node->hasChangedSince(params.lastViewFrustumSent - CHANGE_FUDGE))) {
+        if (wasInView && !(params.deltaViewFrustum && element->hasChangedSince(params.lastViewFrustumSent - CHANGE_FUDGE))) {
             if (params.stats) {
-                params.stats->skippedWasInView(node);
+                params.stats->skippedWasInView(element);
             }
             params.stopReason = EncodeBitstreamParams::WAS_IN_VIEW;
             return bytesAtThisLevel;
@@ -1079,18 +1101,18 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
         // If we're not in delta sending mode, and we weren't asked to do a force send, and the voxel hasn't changed,
         // then we can also bail early and save bits
         if (!params.forceSendScene && !params.deltaViewFrustum &&
-            !node->hasChangedSince(params.lastViewFrustumSent - CHANGE_FUDGE)) {
+            !element->hasChangedSince(params.lastViewFrustumSent - CHANGE_FUDGE)) {
             if (params.stats) {
-                params.stats->skippedNoChange(node);
+                params.stats->skippedNoChange(element);
             }
             params.stopReason = EncodeBitstreamParams::NO_CHANGE;
             return bytesAtThisLevel;
         }
 
-        // If the user also asked for occlusion culling, check if this node is occluded, but only if it's not a leaf.
+        // If the user also asked for occlusion culling, check if this element is occluded, but only if it's not a leaf.
         // leaf occlusion is handled down below when we check child nodes
-        if (params.wantOcclusionCulling && !node->isLeaf()) {
-            AABox voxelBox = node->getAABox();
+        if (params.wantOcclusionCulling && !element->isLeaf()) {
+            AABox voxelBox = element->getAABox();
             voxelBox.scale(TREE_SCALE);
             OctreeProjectedPolygon* voxelPolygon = new OctreeProjectedPolygon(params.viewFrustum->getProjectedPolygon(voxelBox));
 
@@ -1101,7 +1123,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
                 delete voxelPolygon; // cleanup
                 if (result == OCCLUDED) {
                     if (params.stats) {
-                        params.stats->skippedOccluded(node);
+                        params.stats->skippedOccluded(element);
                     }
                     params.stopReason = EncodeBitstreamParams::OCCLUDED;
                     return bytesAtThisLevel;
@@ -1138,14 +1160,14 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
     int currentCount = 0;
 
     for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-        OctreeElement* childNode = node->getChildAtIndex(i);
+        OctreeElement* childNode = element->getChildAtIndex(i);
 
         // if the caller wants to include childExistsBits, then include them even if not in view, if however,
         // we're in a portion of the tree that's not our responsibility, then we assume the child nodes exist
         // even if they don't in our local tree
         bool notMyJurisdiction = false;
         if (params.jurisdictionMap) {
-            notMyJurisdiction = (JurisdictionMap::WITHIN != params.jurisdictionMap->isMyJurisdiction(node->getOctalCode(), i));
+            notMyJurisdiction = (JurisdictionMap::WITHIN != params.jurisdictionMap->isMyJurisdiction(element->getOctalCode(), i));
         }
         if (params.includeExistsBits) {
             // If the child is known to exist, OR, it's not my jurisdiction, then we mark the bit as existing
@@ -1176,7 +1198,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
         }
     }
 
-    // for each child node in Distance sorted order..., check to see if they exist, are colored, and in view, and if so
+    // for each child element in Distance sorted order..., check to see if they exist, are colored, and in view, and if so
     // add them to our distance ordered array of children
     for (int i = 0; i < currentCount; i++) {
         OctreeElement* childNode = sortedChildren[i];
@@ -1218,7 +1240,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
 
                 bool childIsOccluded = false; // assume it's not occluded
 
-                // If the user also asked for occlusion culling, check if this node is occluded
+                // If the user also asked for occlusion culling, check if this element is occluded
                 if (params.wantOcclusionCulling && childNode->isLeaf()) {
                     // Don't check occlusion here, just add them to our distance ordered array...
 
@@ -1282,7 +1304,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
                     }
 
                     // If our child wasn't in view (or we're ignoring wasInView) then we add it to our sending items.
-                    // Or if we were previously in the view, but this node has changed since it was last sent, then we do
+                    // Or if we were previously in the view, but this element has changed since it was last sent, then we do
                     // need to send it.
                     if (!childWasInView ||
                         (params.deltaViewFrustum &&
@@ -1320,7 +1342,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
     if (continueThisLevel && params.includeColor) {
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
             if (oneAtBit(childrenColoredBits, i)) {
-                OctreeElement* childNode = node->getChildAtIndex(i);
+                OctreeElement* childNode = element->getChildAtIndex(i);
                 if (childNode) {
                     int bytesBeforeChild = packetData->getUncompressedSize();
                     continueThisLevel = childNode->appendElementData(packetData);
@@ -1389,7 +1411,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
         int firstRecursiveSliceOffset = packetData->getUncompressedByteOffset();
         int allSlicesSize = 0;
 
-        // for each child node in Distance sorted order..., check to see if they exist, are colored, and in view, and if so
+        // for each child element in Distance sorted order..., check to see if they exist, are colored, and in view, and if so
         // add them to our distance ordered array of children
         for (int indexByDistance = 0; indexByDistance < currentCount; indexByDistance++) {
             OctreeElement* childNode = sortedChildren[indexByDistance];
@@ -1431,7 +1453,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
 
                 // if the child tree wrote just 2 bytes, then it means: it had no colors and no child nodes, because...
                 //    if it had colors it would write 1 byte for the color mask,
-                //          and at least a color's worth of bytes for the node of colors.
+                //          and at least a color's worth of bytes for the element of colors.
                 //   if it had child trees (with something in them) then it would have the 1 byte for child mask
                 //         and some number of bytes of lower children...
                 // so, if the child returns 2 bytes out, we can actually consider that an empty tree also!!
@@ -1441,8 +1463,8 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
                     childTreeBytesOut = 0; // this is the degenerate case of a tree with no colors and no child trees
                 }
                 // We used to try to collapse trees that didn't contain any data, but this does appear to create a problem
-                // in detecting node deletion. So, I've commented this out but left it in here as a warning to anyone else
-                // about not attempting to add this optimization back in, without solving the node deletion case.
+                // in detecting element deletion. So, I've commented this out but left it in here as a warning to anyone else
+                // about not attempting to add this optimization back in, without solving the element deletion case.
                 // We need to send these bitMasks in case the exists in tree bitmask is indicating the deletion of a tree
                 //if (params.includeColor && params.includeExistsBits && childTreeBytesOut == 3) {
                 //    childTreeBytesOut = 0; // this is the degenerate case of a tree with no colors and no child trees
@@ -1508,7 +1530,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
     qDebug("");
     **/
 
-    // if we were unable to fit this level in our packet, then rewind and add it to the node bag for
+    // if we were unable to fit this level in our packet, then rewind and add it to the element bag for
     // sending later...
     if (continueThisLevel) {
         continueThisLevel = packetData->endLevel(thisLevelKey);
@@ -1517,11 +1539,11 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* node,
     }
 
     if (!continueThisLevel) {
-        bag.insert(node);
+        bag.insert(element);
 
-        // don't need to check node here, because we can't get here with no node
+        // don't need to check element here, because we can't get here with no element
         if (params.stats) {
-            params.stats->didntFit(node);
+            params.stats->didntFit(element);
         }
 
         params.stopReason = EncodeBitstreamParams::DIDNT_FIT;
@@ -1591,7 +1613,7 @@ bool Octree::readFromSVOFile(const char* fileName) {
     return fileOk;
 }
 
-void Octree::writeToSVOFile(const char* fileName, OctreeElement* node) {
+void Octree::writeToSVOFile(const char* fileName, OctreeElement* element) {
 
     std::ofstream file(fileName, std::ios::out|std::ios::binary);
 
@@ -1608,9 +1630,9 @@ void Octree::writeToSVOFile(const char* fileName, OctreeElement* node) {
         }
 
         OctreeElementBag nodeBag;
-        // If we were given a specific node, start from there, otherwise start from root
-        if (node) {
-            nodeBag.insert(node);
+        // If we were given a specific element, start from there, otherwise start from root
+        if (element) {
+            nodeBag.insert(element);
         } else {
             nodeBag.insert(_rootNode);
         }
@@ -1627,7 +1649,7 @@ void Octree::writeToSVOFile(const char* fileName, OctreeElement* node) {
             bytesWritten = encodeTreeBitstream(subTree, &packetData, nodeBag, params);
             unlock();
 
-            // if the subTree couldn't fit, and so we should reset the packet and reinsert the node in our bag and try again...
+            // if the subTree couldn't fit, and so we should reset the packet and reinsert the element in our bag and try again...
             if (bytesWritten == 0 && (params.stopReason == EncodeBitstreamParams::DIDNT_FIT)) {
                 if (packetData.hasContent()) {
                     file.write((const char*)packetData.getFinalizedData(), packetData.getFinalizedSize());
@@ -1654,7 +1676,7 @@ unsigned long Octree::getOctreeElementsCount() {
     return nodeCount;
 }
 
-bool Octree::countOctreeElementsOperation(OctreeElement* node, void* extraData) {
+bool Octree::countOctreeElementsOperation(OctreeElement* element, void* extraData) {
     (*(unsigned long*)extraData)++;
     return true; // keep going
 }
@@ -1699,7 +1721,7 @@ void Octree::copySubTreeIntoNewTree(OctreeElement* startNode, Octree* destinatio
 
 void Octree::copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinationNode) {
     OctreeElementBag nodeBag;
-    // If we were given a specific node, start from there, otherwise start from root
+    // If we were given a specific element, start from there, otherwise start from root
     nodeBag.insert(sourceTree->_rootNode);
 
     static OctreePacketData packetData;
diff --git a/libraries/octree/src/Octree.h b/libraries/octree/src/Octree.h
index 56e8d9d08c..4c430bfe3a 100644
--- a/libraries/octree/src/Octree.h
+++ b/libraries/octree/src/Octree.h
@@ -36,8 +36,15 @@ class Shape;
 #include <QObject>
 #include <QReadWriteLock>
 
+/// derive from this class to use the Octree::recurseTreeWithOperator() method
+class RecurseOctreeOperator {
+public:
+    virtual bool PreRecursion(OctreeElement* element) = 0;
+    virtual bool PostRecursion(OctreeElement* element) = 0;
+};
+
 // Callback function, for recuseTreeWithOperation
-typedef bool (*RecurseOctreeOperation)(OctreeElement* node, void* extraData);
+typedef bool (*RecurseOctreeOperation)(OctreeElement* element, void* extraData);
 typedef enum {GRADIENT, RANDOM, NATURAL} creationMode;
 
 const bool NO_EXISTS_BITS         = false;
@@ -222,13 +229,14 @@ public:
     OctreeElement* getOrCreateChildElementAt(float x, float y, float z, float s);
 
     void recurseTreeWithOperation(RecurseOctreeOperation operation, void* extraData = NULL);
-
     void recurseTreeWithPostOperation(RecurseOctreeOperation operation, void* extraData = NULL);
 
     void recurseTreeWithOperationDistanceSorted(RecurseOctreeOperation operation,
                                                 const glm::vec3& point, void* extraData = NULL);
 
-    int encodeTreeBitstream(OctreeElement* node, OctreePacketData* packetData, OctreeElementBag& bag,
+    void recurseTreeWithOperator(RecurseOctreeOperator* operatorObject);
+
+    int encodeTreeBitstream(OctreeElement* element, OctreePacketData* packetData, OctreeElementBag& bag,
                             EncodeBitstreamParams& params) ;
 
     bool isDirty() const { return _isDirty; }
@@ -268,7 +276,7 @@ public:
     void loadOctreeFile(const char* fileName, bool wantColorRandomizer);
 
     // these will read/write files that match the wireformat, excluding the 'V' leading
-    void writeToSVOFile(const char* filename, OctreeElement* node = NULL);
+    void writeToSVOFile(const char* filename, OctreeElement* element = NULL);
     bool readFromSVOFile(const char* filename);
     
 
@@ -279,17 +287,19 @@ public:
 
     bool getShouldReaverage() const { return _shouldReaverage; }
 
-    void recurseNodeWithOperation(OctreeElement* node, RecurseOctreeOperation operation,
+    void recurseNodeWithOperation(OctreeElement* element, RecurseOctreeOperation operation,
                 void* extraData, int recursionCount = 0);
 
 	/// Traverse child nodes of node applying operation in post-fix order
 	///
-    void recurseNodeWithPostOperation(OctreeElement* node, RecurseOctreeOperation operation,
+    void recurseNodeWithPostOperation(OctreeElement* element, RecurseOctreeOperation operation,
                 void* extraData, int recursionCount = 0);
 
-    void recurseNodeWithOperationDistanceSorted(OctreeElement* node, RecurseOctreeOperation operation,
+    void recurseNodeWithOperationDistanceSorted(OctreeElement* element, RecurseOctreeOperation operation,
                 const glm::vec3& point, void* extraData, int recursionCount = 0);
 
+    bool recurseNodeWithOperator(OctreeElement* element, RecurseOctreeOperator* operatorObject, int recursionCount = 0);
+
     bool getIsViewing() const { return _isViewing; }
     void setIsViewing(bool isViewing) { _isViewing = isViewing; }
 
@@ -302,14 +312,14 @@ public slots:
 
 
 protected:
-    void deleteOctalCodeFromTreeRecursion(OctreeElement* node, void* extraData);
+    void deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extraData);
 
-    int encodeTreeBitstreamRecursion(OctreeElement* node,
+    int encodeTreeBitstreamRecursion(OctreeElement* element,
                                      OctreePacketData* packetData, OctreeElementBag& bag,
                                      EncodeBitstreamParams& params, int& currentEncodeLevel,
                                      const ViewFrustum::location& parentLocationThisView) const;
 
-    static bool countOctreeElementsOperation(OctreeElement* node, void* extraData);
+    static bool countOctreeElementsOperation(OctreeElement* element, void* extraData);
 
     OctreeElement* nodeForOctalCode(OctreeElement* ancestorNode, const unsigned char* needleCode, OctreeElement** parentOfFoundNode) const;
     OctreeElement* createMissingNode(OctreeElement* lastParentNode, const unsigned char* codeToReach);

From 91e4a8957326eeb1f16564193e67632217a69151 Mon Sep 17 00:00:00 2001
From: ZappoMan <bradh@konamoxt.com>
Date: Tue, 6 May 2014 15:47:18 -0700
Subject: [PATCH 10/13] cleanup old references to node which are really
 elements

---
 interface/src/voxels/VoxelSystem.cpp     |   4 +-
 libraries/models/src/ModelTree.cpp       |   6 +-
 libraries/models/src/ModelTree.h         |   2 +-
 libraries/octree/src/Octree.cpp          | 322 +++++++++++------------
 libraries/octree/src/Octree.h            |  30 +--
 libraries/particles/src/ParticleTree.cpp |   2 +-
 libraries/particles/src/ParticleTree.h   |   2 +-
 libraries/voxels/src/VoxelTree.cpp       |   6 +-
 libraries/voxels/src/VoxelTree.h         |   2 +-
 9 files changed, 182 insertions(+), 194 deletions(-)

diff --git a/interface/src/voxels/VoxelSystem.cpp b/interface/src/voxels/VoxelSystem.cpp
index 9a54a08619..0fac5a338c 100644
--- a/interface/src/voxels/VoxelSystem.cpp
+++ b/interface/src/voxels/VoxelSystem.cpp
@@ -2032,7 +2032,7 @@ bool VoxelSystem::hideOutOfViewOperation(OctreeElement* element, void* extraData
             // if this node is fully OUTSIDE the view, but previously intersected and/or was inside the last view, then
             // we need to hide it. Additionally we know that ALL of it's children are also fully OUTSIDE so we can recurse
             // the children and simply mark them as hidden
-            args->tree->recurseNodeWithOperation(voxel, hideAllSubTreeOperation, args );
+            args->tree->recurseElementWithOperation(voxel, hideAllSubTreeOperation, args );
             return false;
 
         } break;
@@ -2049,7 +2049,7 @@ bool VoxelSystem::hideOutOfViewOperation(OctreeElement* element, void* extraData
             // if this node is fully INSIDE the view, but previously INTERSECTED and/or was OUTSIDE the last view, then
             // we need to show it. Additionally we know that ALL of it's children are also fully INSIDE so we can recurse
             // the children and simply mark them as visible (as appropriate based on LOD)
-            args->tree->recurseNodeWithOperation(voxel, showAllSubTreeOperation, args);
+            args->tree->recurseElementWithOperation(voxel, showAllSubTreeOperation, args);
             return false;
         } break;
         case ViewFrustum::INTERSECT: {
diff --git a/libraries/models/src/ModelTree.cpp b/libraries/models/src/ModelTree.cpp
index b624b67016..cef38a9422 100644
--- a/libraries/models/src/ModelTree.cpp
+++ b/libraries/models/src/ModelTree.cpp
@@ -12,7 +12,7 @@
 #include "ModelTree.h"
 
 ModelTree::ModelTree(bool shouldReaverage) : Octree(shouldReaverage) {
-    _rootNode = createNewElement();
+    _rootElement = createNewElement();
 }
 
 ModelTreeElement* ModelTree::createNewElement(unsigned char * octalCode) {
@@ -132,6 +132,7 @@ public:
     FindAndUpdateModelWithIDandPropertiesOperator(const ModelItemID& modelID, const ModelItemProperties& properties);
     virtual bool PreRecursion(OctreeElement* element);
     virtual bool PostRecursion(OctreeElement* element);
+    bool wasFound() const { return _found; }
 private:
     const ModelItemID& _modelID;
     const ModelItemProperties& _properties;
@@ -167,6 +168,9 @@ void ModelTree::updateModel(const ModelItemID& modelID, const ModelItemPropertie
     // Look for the existing model in the tree..
     FindAndUpdateModelWithIDandPropertiesOperator theOperator(modelID, properties);
     recurseTreeWithOperator(&theOperator);
+    if (theOperator.wasFound()) {
+        _isDirty = true;
+    }
 }
 
 void ModelTree::addModel(const ModelItemID& modelID, const ModelItemProperties& properties) {
diff --git a/libraries/models/src/ModelTree.h b/libraries/models/src/ModelTree.h
index 02086ecd89..ac25cdc003 100644
--- a/libraries/models/src/ModelTree.h
+++ b/libraries/models/src/ModelTree.h
@@ -29,7 +29,7 @@ public:
     virtual ModelTreeElement* createNewElement(unsigned char * octalCode = NULL);
 
     /// Type safe version of getRoot()
-    ModelTreeElement* getRoot() { return (ModelTreeElement*)_rootNode; }
+    ModelTreeElement* getRoot() { return static_cast<ModelTreeElement*>(_rootElement); }
 
 
     // These methods will allow the OctreeServer to send your tree inbound edit packets of your
diff --git a/libraries/octree/src/Octree.cpp b/libraries/octree/src/Octree.cpp
index 7f5834fa6f..8228249777 100644
--- a/libraries/octree/src/Octree.cpp
+++ b/libraries/octree/src/Octree.cpp
@@ -40,7 +40,7 @@ float boundaryDistanceForRenderLevel(unsigned int renderLevel, float voxelSizeSc
 }
 
 Octree::Octree(bool shouldReaverage) :
-    _rootNode(NULL),
+    _rootElement(NULL),
     _isDirty(true),
     _shouldReaverage(shouldReaverage),
     _stopImport(false),
@@ -52,25 +52,25 @@ Octree::Octree(bool shouldReaverage) :
 Octree::~Octree() {
     // delete the children of the root element
     // this recursively deletes the tree
-    delete _rootNode;
+    delete _rootElement;
 }
 
 // Recurses voxel tree calling the RecurseOctreeOperation function for each element.
 // stops recursion if operation function returns false.
 void Octree::recurseTreeWithOperation(RecurseOctreeOperation operation, void* extraData) {
-    recurseNodeWithOperation(_rootNode, operation, extraData);
+    recurseElementWithOperation(_rootElement, operation, extraData);
 }
 
 // Recurses voxel tree calling the RecurseOctreePostFixOperation function for each element in post-fix order.
 void Octree::recurseTreeWithPostOperation(RecurseOctreeOperation operation, void* extraData) {
-    recurseNodeWithPostOperation(_rootNode, operation, extraData);
+    recurseElementWithPostOperation(_rootElement, operation, extraData);
 }
 
 // Recurses voxel element with an operation function
-void Octree::recurseNodeWithOperation(OctreeElement* element, RecurseOctreeOperation operation, void* extraData,
+void Octree::recurseElementWithOperation(OctreeElement* element, RecurseOctreeOperation operation, void* extraData,
                         int recursionCount) {
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
-        qDebug() << "Octree::recurseNodeWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
+        qDebug() << "Octree::recurseElementWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
         return;
     }
 
@@ -78,24 +78,24 @@ void Octree::recurseNodeWithOperation(OctreeElement* element, RecurseOctreeOpera
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
             OctreeElement* child = element->getChildAtIndex(i);
             if (child) {
-                recurseNodeWithOperation(child, operation, extraData, recursionCount+1);
+                recurseElementWithOperation(child, operation, extraData, recursionCount+1);
             }
         }
     }
 }
 
 // Recurses voxel element with an operation function
-void Octree::recurseNodeWithPostOperation(OctreeElement* element, RecurseOctreeOperation operation, void* extraData,
+void Octree::recurseElementWithPostOperation(OctreeElement* element, RecurseOctreeOperation operation, void* extraData,
                         int recursionCount) {
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
-        qDebug() << "Octree::recurseNodeWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!\n";
+        qDebug() << "Octree::recurseElementWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!\n";
         return;
     }
 
     for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
         OctreeElement* child = element->getChildAtIndex(i);
         if (child) {
-            recurseNodeWithPostOperation(child, operation, extraData, recursionCount+1);
+            recurseElementWithPostOperation(child, operation, extraData, recursionCount+1);
         }
     }
 	operation(element, extraData);
@@ -106,15 +106,15 @@ void Octree::recurseNodeWithPostOperation(OctreeElement* element, RecurseOctreeO
 void Octree::recurseTreeWithOperationDistanceSorted(RecurseOctreeOperation operation,
                                                        const glm::vec3& point, void* extraData) {
 
-    recurseNodeWithOperationDistanceSorted(_rootNode, operation, point, extraData);
+    recurseElementWithOperationDistanceSorted(_rootElement, operation, point, extraData);
 }
 
 // Recurses voxel element with an operation function
-void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* element, RecurseOctreeOperation operation,
+void Octree::recurseElementWithOperationDistanceSorted(OctreeElement* element, RecurseOctreeOperation operation,
                                                        const glm::vec3& point, void* extraData, int recursionCount) {
 
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
-        qDebug() << "Octree::recurseNodeWithOperationDistanceSorted() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
+        qDebug() << "Octree::recurseElementWithOperationDistanceSorted() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
         return;
     }
 
@@ -126,36 +126,36 @@ void Octree::recurseNodeWithOperationDistanceSorted(OctreeElement* element, Recu
         int currentCount = 0;
 
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-            OctreeElement* childNode = element->getChildAtIndex(i);
-            if (childNode) {
+            OctreeElement* childElement = element->getChildAtIndex(i);
+            if (childElement) {
                 // chance to optimize, doesn't need to be actual distance!! Could be distance squared
-                float distanceSquared = childNode->distanceSquareToPoint(point);
-                //qDebug("recurseNodeWithOperationDistanceSorted() CHECKING child[%d] point=%f,%f center=%f,%f distance=%f...\n", i, point.x, point.y, center.x, center.y, distance);
-                //childNode->printDebugDetails("");
-                currentCount = insertIntoSortedArrays((void*)childNode, distanceSquared, i,
+                float distanceSquared = childElement->distanceSquareToPoint(point);
+                //qDebug("recurseElementWithOperationDistanceSorted() CHECKING child[%d] point=%f,%f center=%f,%f distance=%f...\n", i, point.x, point.y, center.x, center.y, distance);
+                //childElement->printDebugDetails("");
+                currentCount = insertIntoSortedArrays((void*)childElement, distanceSquared, i,
                                                       (void**)&sortedChildren, (float*)&distancesToChildren,
                                                       (int*)&indexOfChildren, currentCount, NUMBER_OF_CHILDREN);
             }
         }
 
         for (int i = 0; i < currentCount; i++) {
-            OctreeElement* childNode = sortedChildren[i];
-            if (childNode) {
-                //qDebug("recurseNodeWithOperationDistanceSorted() PROCESSING child[%d] distance=%f...\n", i, distancesToChildren[i]);
-                //childNode->printDebugDetails("");
-                recurseNodeWithOperationDistanceSorted(childNode, operation, point, extraData);
+            OctreeElement* childElement = sortedChildren[i];
+            if (childElement) {
+                //qDebug("recurseElementWithOperationDistanceSorted() PROCESSING child[%d] distance=%f...\n", i, distancesToChildren[i]);
+                //childElement->printDebugDetails("");
+                recurseElementWithOperationDistanceSorted(childElement, operation, point, extraData);
             }
         }
     }
 }
 
 void Octree::recurseTreeWithOperator(RecurseOctreeOperator* operatorObject) {
-    recurseNodeWithOperator(_rootNode, operatorObject);
+    recurseElementWithOperator(_rootElement, operatorObject);
 }
 
-bool Octree::recurseNodeWithOperator(OctreeElement* element, RecurseOctreeOperator* operatorObject, int recursionCount) {
+bool Octree::recurseElementWithOperator(OctreeElement* element, RecurseOctreeOperator* operatorObject, int recursionCount) {
     if (recursionCount > DANGEROUSLY_DEEP_RECURSION) {
-        qDebug() << "Octree::recurseNodeWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
+        qDebug() << "Octree::recurseElementWithOperation() reached DANGEROUSLY_DEEP_RECURSION, bailing!";
         return false;
     }
 
@@ -163,7 +163,7 @@ bool Octree::recurseNodeWithOperator(OctreeElement* element, RecurseOctreeOperat
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
             OctreeElement* child = element->getChildAtIndex(i);
             if (child) {
-                if (!recurseNodeWithOperator(child, operatorObject, recursionCount + 1)) {
+                if (!recurseElementWithOperator(child, operatorObject, recursionCount + 1)) {
                     break; // stop recursing if operator returns false...
                 }
             }
@@ -174,62 +174,62 @@ bool Octree::recurseNodeWithOperator(OctreeElement* element, RecurseOctreeOperat
 }
 
 
-OctreeElement* Octree::nodeForOctalCode(OctreeElement* ancestorNode,
-                                       const unsigned char* needleCode, OctreeElement** parentOfFoundNode) const {
+OctreeElement* Octree::nodeForOctalCode(OctreeElement* ancestorElement,
+                                       const unsigned char* needleCode, OctreeElement** parentOfFoundElement) const {
     // special case for NULL octcode
     if (!needleCode) {
-        return _rootNode;
+        return _rootElement;
     }
 
-    // find the appropriate branch index based on this ancestorNode
+    // find the appropriate branch index based on this ancestorElement
     if (*needleCode > 0) {
-        int branchForNeedle = branchIndexWithDescendant(ancestorNode->getOctalCode(), needleCode);
-        OctreeElement* childNode = ancestorNode->getChildAtIndex(branchForNeedle);
+        int branchForNeedle = branchIndexWithDescendant(ancestorElement->getOctalCode(), needleCode);
+        OctreeElement* childElement = ancestorElement->getChildAtIndex(branchForNeedle);
 
-        if (childNode) {
-            if (*childNode->getOctalCode() == *needleCode) {
+        if (childElement) {
+            if (*childElement->getOctalCode() == *needleCode) {
 
                 // If the caller asked for the parent, then give them that too...
-                if (parentOfFoundNode) {
-                    *parentOfFoundNode = ancestorNode;
+                if (parentOfFoundElement) {
+                    *parentOfFoundElement = ancestorElement;
                 }
                 // the fact that the number of sections is equivalent does not always guarantee
                 // that this is the same element, however due to the recursive traversal
                 // we know that this is our element
-                return childNode;
+                return childElement;
             } else {
                 // we need to go deeper
-                return nodeForOctalCode(childNode, needleCode, parentOfFoundNode);
+                return nodeForOctalCode(childElement, needleCode, parentOfFoundElement);
             }
         }
     }
 
     // we've been given a code we don't have a element for
     // return this element as the last created parent
-    return ancestorNode;
+    return ancestorElement;
 }
 
 // returns the element created!
-OctreeElement* Octree::createMissingNode(OctreeElement* lastParentNode, const unsigned char* codeToReach) {
-    int indexOfNewChild = branchIndexWithDescendant(lastParentNode->getOctalCode(), codeToReach);
+OctreeElement* Octree::createMissingElement(OctreeElement* lastParentElement, const unsigned char* codeToReach) {
+    int indexOfNewChild = branchIndexWithDescendant(lastParentElement->getOctalCode(), codeToReach);
     // If this parent element is a leaf, then you know the child path doesn't exist, so deal with
     // breaking up the leaf first, which will also create a child path
-    if (lastParentNode->requiresSplit()) {
-        lastParentNode->splitChildren();
-    } else if (!lastParentNode->getChildAtIndex(indexOfNewChild)) {
+    if (lastParentElement->requiresSplit()) {
+        lastParentElement->splitChildren();
+    } else if (!lastParentElement->getChildAtIndex(indexOfNewChild)) {
         // we could be coming down a branch that was already created, so don't stomp on it.
-        lastParentNode->addChildAtIndex(indexOfNewChild);
+        lastParentElement->addChildAtIndex(indexOfNewChild);
     }
 
     // This works because we know we traversed down the same tree so if the length is the same, then the whole code is the same
-    if (*lastParentNode->getChildAtIndex(indexOfNewChild)->getOctalCode() == *codeToReach) {
-        return lastParentNode->getChildAtIndex(indexOfNewChild);
+    if (*lastParentElement->getChildAtIndex(indexOfNewChild)->getOctalCode() == *codeToReach) {
+        return lastParentElement->getChildAtIndex(indexOfNewChild);
     } else {
-        return createMissingNode(lastParentNode->getChildAtIndex(indexOfNewChild), codeToReach);
+        return createMissingElement(lastParentElement->getChildAtIndex(indexOfNewChild), codeToReach);
     }
 }
 
-int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* nodeData, int bytesLeftToRead,
+int Octree::readElementData(OctreeElement* destinationElement, const unsigned char* nodeData, int bytesLeftToRead,
                             ReadBitstreamToTreeParams& args) {
     // give this destination element the child mask from the packet
     const unsigned char ALL_CHILDREN_ASSUMED_TO_EXIST = 0xFF;
@@ -241,26 +241,26 @@ int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* no
         // check the colors mask to see if we have a child to color in
         if (oneAtBit(colorInPacketMask, i)) {
             // create the child if it doesn't exist
-            if (!destinationNode->getChildAtIndex(i)) {
-                destinationNode->addChildAtIndex(i);
-                if (destinationNode->isDirty()) {
+            if (!destinationElement->getChildAtIndex(i)) {
+                destinationElement->addChildAtIndex(i);
+                if (destinationElement->isDirty()) {
                     _isDirty = true;
                 }
             }
 
-            OctreeElement* childNodeAt = destinationNode->getChildAtIndex(i);
+            OctreeElement* childElementAt = destinationElement->getChildAtIndex(i);
             bool nodeIsDirty = false;
-            if (childNodeAt) {
-                bytesRead += childNodeAt->readElementDataFromBuffer(nodeData + bytesRead, bytesLeftToRead, args);
-                childNodeAt->setSourceUUID(args.sourceUUID);
+            if (childElementAt) {
+                bytesRead += childElementAt->readElementDataFromBuffer(nodeData + bytesRead, bytesLeftToRead, args);
+                childElementAt->setSourceUUID(args.sourceUUID);
 
                 // if we had a local version of the element already, it's possible that we have it already but
                 // with the same color data, so this won't count as a change. To address this we check the following
-                if (!childNodeAt->isDirty() && childNodeAt->getShouldRender() && !childNodeAt->isRendered()) {
-                    childNodeAt->setDirtyBit(); // force dirty!
+                if (!childElementAt->isDirty() && childElementAt->getShouldRender() && !childElementAt->isRendered()) {
+                    childElementAt->setDirtyBit(); // force dirty!
                 }
 
-                nodeIsDirty = childNodeAt->isDirty();
+                nodeIsDirty = childElementAt->isDirty();
             }
             if (nodeIsDirty) {
                 _isDirty = true;
@@ -279,17 +279,17 @@ int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* no
         // check the exists mask to see if we have a child to traverse into
 
         if (oneAtBit(childMask, childIndex)) {
-            if (!destinationNode->getChildAtIndex(childIndex)) {
+            if (!destinationElement->getChildAtIndex(childIndex)) {
                 // add a child at that index, if it doesn't exist
-                destinationNode->addChildAtIndex(childIndex);
-                bool nodeIsDirty = destinationNode->isDirty();
+                destinationElement->addChildAtIndex(childIndex);
+                bool nodeIsDirty = destinationElement->isDirty();
                 if (nodeIsDirty) {
                     _isDirty = true;
                 }
             }
 
             // tell the child to read the subsequent data
-            bytesRead += readNodeData(destinationNode->getChildAtIndex(childIndex),
+            bytesRead += readElementData(destinationElement->getChildAtIndex(childIndex),
                                       nodeData + bytesRead, bytesLeftToRead - bytesRead, args);
         }
         childIndex++;
@@ -299,8 +299,8 @@ int Octree::readNodeData(OctreeElement* destinationNode, const unsigned char* no
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
             // now also check the childrenInTreeMask, if the mask is missing the bit, then it means we need to delete this child
             // subtree/element, because it shouldn't actually exist in the tree.
-            if (!oneAtBit(childrenInTreeMask, i) && destinationNode->getChildAtIndex(i)) {
-                destinationNode->safeDeepDeleteChildAtIndex(i);
+            if (!oneAtBit(childrenInTreeMask, i) && destinationElement->getChildAtIndex(i)) {
+                destinationElement->safeDeepDeleteChildAtIndex(i);
                 _isDirty = true; // by definition!
             }
         }
@@ -314,24 +314,24 @@ void Octree::readBitstreamToTree(const unsigned char * bitstream, unsigned long
     const unsigned char* bitstreamAt = bitstream;
 
     // If destination element is not included, set it to root
-    if (!args.destinationNode) {
-        args.destinationNode = _rootNode;
+    if (!args.destinationElement) {
+        args.destinationElement = _rootElement;
     }
 
-    // Keep looping through the buffer calling readNodeData() this allows us to pack multiple root-relative Octal codes
-    // into a single network packet. readNodeData() basically goes down a tree from the root, and fills things in from there
+    // Keep looping through the buffer calling readElementData() this allows us to pack multiple root-relative Octal codes
+    // into a single network packet. readElementData() basically goes down a tree from the root, and fills things in from there
     // if there are more bytes after that, it's assumed to be another root relative tree
 
     while (bitstreamAt < bitstream + bufferSizeBytes) {
-        OctreeElement* bitstreamRootNode = nodeForOctalCode(args.destinationNode, (unsigned char *)bitstreamAt, NULL);
-        if (*bitstreamAt != *bitstreamRootNode->getOctalCode()) {
+        OctreeElement* bitstreamRootElement = nodeForOctalCode(args.destinationElement, (unsigned char *)bitstreamAt, NULL);
+        if (*bitstreamAt != *bitstreamRootElement->getOctalCode()) {
             // if the octal code returned is not on the same level as
             // the code being searched for, we have OctreeElements to create
 
             // Note: we need to create this element relative to root, because we're assuming that the bitstream for the initial
             // octal code is always relative to root!
-            bitstreamRootNode = createMissingNode(args.destinationNode, (unsigned char*) bitstreamAt);
-            if (bitstreamRootNode->isDirty()) {
+            bitstreamRootElement = createMissingElement(args.destinationElement, (unsigned char*) bitstreamAt);
+            if (bitstreamRootElement->isDirty()) {
                 _isDirty = true;
             }
         }
@@ -340,7 +340,7 @@ void Octree::readBitstreamToTree(const unsigned char * bitstream, unsigned long
         int theseBytesRead = 0;
         theseBytesRead += octalCodeBytes;
 
-        theseBytesRead += readNodeData(bitstreamRootNode, bitstreamAt + octalCodeBytes,
+        theseBytesRead += readElementData(bitstreamRootElement, bitstreamAt + octalCodeBytes,
                                        bufferSizeBytes - (bytesRead + octalCodeBytes), args);
 
         // skip bitstream to new startPoint
@@ -382,17 +382,17 @@ void Octree::deleteOctalCodeFromTree(const unsigned char* codeBuffer, bool colla
     args.deleteLastChild    = false;
     args.pathChanged        = false;
 
-    deleteOctalCodeFromTreeRecursion(_rootNode, &args);
+    deleteOctalCodeFromTreeRecursion(_rootElement, &args);
 }
 
 void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extraData) {
     DeleteOctalCodeFromTreeArgs* args = (DeleteOctalCodeFromTreeArgs*)extraData;
 
-    int lengthOfNodeCode = numberOfThreeBitSectionsInCode(element->getOctalCode());
+    int lengthOfElementCode = numberOfThreeBitSectionsInCode(element->getOctalCode());
 
     // Since we traverse the tree in code order, we know that if our code
     // matches, then we've reached  our target element.
-    if (lengthOfNodeCode == args->lengthOfCode) {
+    if (lengthOfElementCode == args->lengthOfCode) {
         // we've reached our target, depending on how we're called we may be able to operate on it
         // it here, we need to recurse up, and delete it there. So we handle these cases the same to keep
         // the logic consistent.
@@ -402,30 +402,30 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extr
 
     // Ok, we know we haven't reached our target element yet, so keep looking
     int childIndex = branchIndexWithDescendant(element->getOctalCode(), args->codeBuffer);
-    OctreeElement* childNode = element->getChildAtIndex(childIndex);
+    OctreeElement* childElement = element->getChildAtIndex(childIndex);
 
     // If there is no child at the target location, and the current parent element is a colored leaf,
     // then it means we were asked to delete a child out of a larger leaf voxel.
     // We support this by breaking up the parent voxel into smaller pieces.
-    if (!childNode && element->requiresSplit()) {
+    if (!childElement && element->requiresSplit()) {
         // we need to break up ancestors until we get to the right level
-        OctreeElement* ancestorNode = element;
+        OctreeElement* ancestorElement = element;
         while (true) {
-            int index = branchIndexWithDescendant(ancestorNode->getOctalCode(), args->codeBuffer);
+            int index = branchIndexWithDescendant(ancestorElement->getOctalCode(), args->codeBuffer);
 
             // we end up with all the children, even the one we want to delete
-            ancestorNode->splitChildren();
+            ancestorElement->splitChildren();
 
-            int lengthOfAncestorNode = numberOfThreeBitSectionsInCode(ancestorNode->getOctalCode());
+            int lengthOfAncestorElement = numberOfThreeBitSectionsInCode(ancestorElement->getOctalCode());
 
             // If we've reached the parent of the target, then stop breaking up children
-            if (lengthOfAncestorNode == (args->lengthOfCode - 1)) {
+            if (lengthOfAncestorElement == (args->lengthOfCode - 1)) {
 
                 // since we created all the children when we split, we need to delete this target one
-                ancestorNode->deleteChildAtIndex(index);
+                ancestorElement->deleteChildAtIndex(index);
                 break;
             }
-            ancestorNode = ancestorNode->getChildAtIndex(index);
+            ancestorElement = ancestorElement->getChildAtIndex(index);
         }
         _isDirty = true;
         args->pathChanged = true;
@@ -437,13 +437,13 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extr
     // if we don't have a child and we reach this point, then we actually know that the parent
     // isn't a colored leaf, and the child branch doesn't exist, so there's nothing to do below and
     // we can safely return, ending the recursion and unwinding
-    if (!childNode) {
+    if (!childElement) {
         return;
     }
 
     // If we got this far then we have a child for the branch we're looking for, but we're not there yet
     // recurse till we get there
-    deleteOctalCodeFromTreeRecursion(childNode, args);
+    deleteOctalCodeFromTreeRecursion(childElement, args);
 
     // If the lower level determined it needs to be deleted, then we should delete now.
     if (args->deleteLastChild) {
@@ -459,7 +459,7 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extr
         // to delete this element.  This will collapse the empty tree above us.
         if (args->collapseEmptyTrees && element->getChildCount() == 0) {
             // Can't delete the root this way.
-            if (element == _rootNode) {
+            if (element == _rootElement) {
                 args->deleteLastChild = false; // reset so that further up the unwinding chain we don't do anything
             }
         } else {
@@ -475,8 +475,8 @@ void Octree::deleteOctalCodeFromTreeRecursion(OctreeElement* element, void* extr
 }
 
 void Octree::eraseAllOctreeElements() {
-    delete _rootNode; // this will recurse and delete all children
-    _rootNode = createNewElement();
+    delete _rootElement; // this will recurse and delete all children
+    _rootElement = createNewElement();
     _isDirty = true;
 }
 
@@ -512,15 +512,15 @@ void Octree::processRemoveOctreeElementsBitstream(const unsigned char* bitstream
     }
 }
 
-// Note: this is an expensive call. Don't call it unless you really need to reaverage the entire tree (from startNode)
-void Octree::reaverageOctreeElements(OctreeElement* startNode) {
-    if (!startNode) {
-        startNode = getRoot();
+// Note: this is an expensive call. Don't call it unless you really need to reaverage the entire tree (from startElement)
+void Octree::reaverageOctreeElements(OctreeElement* startElement) {
+    if (!startElement) {
+        startElement = getRoot();
     }
     // if our tree is a reaveraging tree, then we do this, otherwise we don't do anything
     if (_shouldReaverage) {
         static int recursionCount;
-        if (startNode == _rootNode) {
+        if (startElement == _rootElement) {
             recursionCount = 0;
         } else {
             recursionCount++;
@@ -534,16 +534,16 @@ void Octree::reaverageOctreeElements(OctreeElement* startNode) {
         bool hasChildren = false;
 
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-            if (startNode->getChildAtIndex(i)) {
-                reaverageOctreeElements(startNode->getChildAtIndex(i));
+            if (startElement->getChildAtIndex(i)) {
+                reaverageOctreeElements(startElement->getChildAtIndex(i));
                 hasChildren = true;
             }
         }
 
         // collapseIdenticalLeaves() returns true if it collapses the leaves
         // in which case we don't need to set the average color
-        if (hasChildren && !startNode->collapseChildren()) {
-            startNode->calculateAverageFromChildren();
+        if (hasChildren && !startElement->collapseChildren()) {
+            startElement->calculateAverageFromChildren();
         }
         recursionCount--;
     }
@@ -551,7 +551,7 @@ void Octree::reaverageOctreeElements(OctreeElement* startNode) {
 
 OctreeElement* Octree::getOctreeElementAt(float x, float y, float z, float s) const {
     unsigned char* octalCode = pointToOctalCode(x,y,z,s);
-    OctreeElement* element = nodeForOctalCode(_rootNode, octalCode, NULL);
+    OctreeElement* element = nodeForOctalCode(_rootElement, octalCode, NULL);
     if (*element->getOctalCode() != *octalCode) {
         element = NULL;
     }
@@ -566,7 +566,7 @@ OctreeElement* Octree::getOctreeElementAt(float x, float y, float z, float s) co
 
 OctreeElement* Octree::getOctreeEnclosingElementAt(float x, float y, float z, float s) const {
     unsigned char* octalCode = pointToOctalCode(x,y,z,s);
-    OctreeElement* element = nodeForOctalCode(_rootNode, octalCode, NULL);
+    OctreeElement* element = nodeForOctalCode(_rootElement, octalCode, NULL);
     
     delete[] octalCode; // cleanup memory
 #ifdef HAS_AUDIT_CHILDREN
@@ -1160,7 +1160,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
     int currentCount = 0;
 
     for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
-        OctreeElement* childNode = element->getChildAtIndex(i);
+        OctreeElement* childElement = element->getChildAtIndex(i);
 
         // if the caller wants to include childExistsBits, then include them even if not in view, if however,
         // we're in a portion of the tree that's not our responsibility, then we assume the child nodes exist
@@ -1171,61 +1171,61 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
         }
         if (params.includeExistsBits) {
             // If the child is known to exist, OR, it's not my jurisdiction, then we mark the bit as existing
-            if (childNode || notMyJurisdiction) {
+            if (childElement || notMyJurisdiction) {
                 childrenExistInTreeBits += (1 << (7 - i));
             }
         }
 
         if (params.wantOcclusionCulling) {
-            if (childNode) {
-                float distance = params.viewFrustum ? childNode->distanceToCamera(*params.viewFrustum) : 0;
+            if (childElement) {
+                float distance = params.viewFrustum ? childElement->distanceToCamera(*params.viewFrustum) : 0;
 
-                currentCount = insertIntoSortedArrays((void*)childNode, distance, i,
+                currentCount = insertIntoSortedArrays((void*)childElement, distance, i,
                                                       (void**)&sortedChildren, (float*)&distancesToChildren,
                                                       (int*)&indexOfChildren, currentCount, NUMBER_OF_CHILDREN);
             }
         } else {
-            sortedChildren[i] = childNode;
+            sortedChildren[i] = childElement;
             indexOfChildren[i] = i;
             distancesToChildren[i] = 0.0f;
             currentCount++;
         }
 
         // track stats
-        // must check childNode here, because it could be we got here with no childNode
-        if (params.stats && childNode) {
-            params.stats->traversed(childNode);
+        // must check childElement here, because it could be we got here with no childElement
+        if (params.stats && childElement) {
+            params.stats->traversed(childElement);
         }
     }
 
     // for each child element in Distance sorted order..., check to see if they exist, are colored, and in view, and if so
     // add them to our distance ordered array of children
     for (int i = 0; i < currentCount; i++) {
-        OctreeElement* childNode = sortedChildren[i];
+        OctreeElement* childElement = sortedChildren[i];
         int originalIndex = indexOfChildren[i];
 
-        bool childIsInView  = (childNode && 
+        bool childIsInView  = (childElement && 
                 ( !params.viewFrustum || // no view frustum was given, everything is assumed in view
                   (nodeLocationThisView == ViewFrustum::INSIDE) || // the parent was fully in view, we can assume ALL children are
-                  (nodeLocationThisView == ViewFrustum::INTERSECT && childNode->isInView(*params.viewFrustum)) // the parent intersects and the child is in view
+                  (nodeLocationThisView == ViewFrustum::INTERSECT && childElement->isInView(*params.viewFrustum)) // the parent intersects and the child is in view
                 ));
 
         if (!childIsInView) {
-            // must check childNode here, because it could be we got here because there was no childNode
-            if (params.stats && childNode) {
-                params.stats->skippedOutOfView(childNode);
+            // must check childElement here, because it could be we got here because there was no childElement
+            if (params.stats && childElement) {
+                params.stats->skippedOutOfView(childElement);
             }
         } else {
             // Before we determine consider this further, let's see if it's in our LOD scope...
-            float distance = distancesToChildren[i]; // params.viewFrustum ? childNode->distanceToCamera(*params.viewFrustum) : 0;
+            float distance = distancesToChildren[i]; // params.viewFrustum ? childElement->distanceToCamera(*params.viewFrustum) : 0;
             float boundaryDistance = !params.viewFrustum ? 1 :
-                                     boundaryDistanceForRenderLevel(childNode->getLevel() + params.boundaryLevelAdjust,
+                                     boundaryDistanceForRenderLevel(childElement->getLevel() + params.boundaryLevelAdjust,
                                             params.octreeElementSizeScale);
 
             if (!(distance < boundaryDistance)) {
-                // don't need to check childNode here, because we can't get here with no childNode
+                // don't need to check childElement here, because we can't get here with no childElement
                 if (params.stats) {
-                    params.stats->skippedDistance(childNode);
+                    params.stats->skippedDistance(childElement);
                 }
             } else {
                 inViewCount++;
@@ -1233,7 +1233,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                 // track children in view as existing and not a leaf, if they're a leaf,
                 // we don't care about recursing deeper on them, and we don't consider their
                 // subtree to exist
-                if (!(childNode && childNode->isLeaf())) {
+                if (!(childElement && childElement->isLeaf())) {
                     childrenExistInPacketBits += (1 << (7 - originalIndex));
                     inViewNotLeafCount++;
                 }
@@ -1241,10 +1241,10 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                 bool childIsOccluded = false; // assume it's not occluded
 
                 // If the user also asked for occlusion culling, check if this element is occluded
-                if (params.wantOcclusionCulling && childNode->isLeaf()) {
+                if (params.wantOcclusionCulling && childElement->isLeaf()) {
                     // Don't check occlusion here, just add them to our distance ordered array...
 
-                    AABox voxelBox = childNode->getAABox();
+                    AABox voxelBox = childElement->getAABox();
                     voxelBox.scale(TREE_SCALE);
                     OctreeProjectedPolygon* voxelPolygon = new OctreeProjectedPolygon(
                                 params.viewFrustum->getProjectedPolygon(voxelBox));
@@ -1273,18 +1273,18 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
 
                 bool shouldRender = !params.viewFrustum
                                     ? true
-                                    : childNode->calculateShouldRender(params.viewFrustum,
+                                    : childElement->calculateShouldRender(params.viewFrustum,
                                                     params.octreeElementSizeScale, params.boundaryLevelAdjust);
 
                 // track some stats
                 if (params.stats) {
-                    // don't need to check childNode here, because we can't get here with no childNode
-                    if (!shouldRender && childNode->isLeaf()) {
-                        params.stats->skippedDistance(childNode);
+                    // don't need to check childElement here, because we can't get here with no childElement
+                    if (!shouldRender && childElement->isLeaf()) {
+                        params.stats->skippedDistance(childElement);
                     }
-                    // don't need to check childNode here, because we can't get here with no childNode
+                    // don't need to check childElement here, because we can't get here with no childElement
                     if (childIsOccluded) {
-                        params.stats->skippedOccluded(childNode);
+                        params.stats->skippedOccluded(childElement);
                     }
                 }
 
@@ -1292,11 +1292,11 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                 if (shouldRender && !childIsOccluded) {
                     bool childWasInView = false;
 
-                    if (childNode && params.deltaViewFrustum && params.lastViewFrustum) {
-                        ViewFrustum::location location = childNode->inFrustum(*params.lastViewFrustum);
+                    if (childElement && params.deltaViewFrustum && params.lastViewFrustum) {
+                        ViewFrustum::location location = childElement->inFrustum(*params.lastViewFrustum);
 
                         // If we're a leaf, then either intersect or inside is considered "formerly in view"
-                        if (childNode->isLeaf()) {
+                        if (childElement->isLeaf()) {
                             childWasInView = location != ViewFrustum::OUTSIDE;
                         } else {
                             childWasInView = location == ViewFrustum::INSIDE;
@@ -1308,18 +1308,18 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                     // need to send it.
                     if (!childWasInView ||
                         (params.deltaViewFrustum &&
-                         childNode->hasChangedSince(params.lastViewFrustumSent - CHANGE_FUDGE))){
+                         childElement->hasChangedSince(params.lastViewFrustumSent - CHANGE_FUDGE))){
 
                         childrenColoredBits += (1 << (7 - originalIndex));
                         inViewWithColorCount++;
                     } else {
                         // otherwise just track stats of the items we discarded
-                        // don't need to check childNode here, because we can't get here with no childNode
+                        // don't need to check childElement here, because we can't get here with no childElement
                         if (params.stats) {
                             if (childWasInView) {
-                                params.stats->skippedWasInView(childNode);
+                                params.stats->skippedWasInView(childElement);
                             } else {
-                                params.stats->skippedNoChange(childNode);
+                                params.stats->skippedNoChange(childElement);
                             }
                         }
                     }
@@ -1342,10 +1342,10 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
     if (continueThisLevel && params.includeColor) {
         for (int i = 0; i < NUMBER_OF_CHILDREN; i++) {
             if (oneAtBit(childrenColoredBits, i)) {
-                OctreeElement* childNode = element->getChildAtIndex(i);
-                if (childNode) {
+                OctreeElement* childElement = element->getChildAtIndex(i);
+                if (childElement) {
                     int bytesBeforeChild = packetData->getUncompressedSize();
-                    continueThisLevel = childNode->appendElementData(packetData);
+                    continueThisLevel = childElement->appendElementData(packetData);
                     int bytesAfterChild = packetData->getUncompressedSize();
 
                     if (!continueThisLevel) {
@@ -1354,9 +1354,9 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
 
                     bytesAtThisLevel += (bytesAfterChild - bytesBeforeChild); // keep track of byte count for this child
 
-                    // don't need to check childNode here, because we can't get here with no childNode
+                    // don't need to check childElement here, because we can't get here with no childElement
                     if (params.stats) {
-                        params.stats->colorSent(childNode);
+                        params.stats->colorSent(childElement);
                     }
                 }
             }
@@ -1414,7 +1414,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
         // for each child element in Distance sorted order..., check to see if they exist, are colored, and in view, and if so
         // add them to our distance ordered array of children
         for (int indexByDistance = 0; indexByDistance < currentCount; indexByDistance++) {
-            OctreeElement* childNode = sortedChildren[indexByDistance];
+            OctreeElement* childElement = sortedChildren[indexByDistance];
             int originalIndex = indexOfChildren[indexByDistance];
 
             if (oneAtBit(childrenExistInPacketBits, originalIndex)) {
@@ -1435,7 +1435,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                 // This only applies in the view frustum case, in other cases, like file save and copy/past where
                 // no viewFrustum was requested, we still want to recurse the child tree.
                 if (!params.viewFrustum || !oneAtBit(childrenColoredBits, originalIndex)) {
-                    childTreeBytesOut = encodeTreeBitstreamRecursion(childNode, packetData, bag, params, 
+                    childTreeBytesOut = encodeTreeBitstreamRecursion(childElement, packetData, bag, params, 
                                                                             thisLevel, nodeLocationThisView);
                 }
 
@@ -1634,7 +1634,7 @@ void Octree::writeToSVOFile(const char* fileName, OctreeElement* element) {
         if (element) {
             nodeBag.insert(element);
         } else {
-            nodeBag.insert(_rootNode);
+            nodeBag.insert(_rootElement);
         }
 
         static OctreePacketData packetData;
@@ -1681,12 +1681,12 @@ bool Octree::countOctreeElementsOperation(OctreeElement* element, void* extraDat
     return true; // keep going
 }
 
-void Octree::copySubTreeIntoNewTree(OctreeElement* startNode, Octree* destinationTree, bool rebaseToRoot) {
+void Octree::copySubTreeIntoNewTree(OctreeElement* startElement, Octree* destinationTree, bool rebaseToRoot) {
     OctreeElementBag nodeBag;
-    nodeBag.insert(startNode);
+    nodeBag.insert(startElement);
     int chopLevels = 0;
     if (rebaseToRoot) {
-        chopLevels = numberOfThreeBitSectionsInCode(startNode->getOctalCode());
+        chopLevels = numberOfThreeBitSectionsInCode(startElement->getOctalCode());
     }
 
     static OctreePacketData packetData;
@@ -1701,28 +1701,12 @@ void Octree::copySubTreeIntoNewTree(OctreeElement* startNode, Octree* destinatio
         ReadBitstreamToTreeParams args(WANT_COLOR, NO_EXISTS_BITS);
         destinationTree->readBitstreamToTree(packetData.getUncompressedData(), packetData.getUncompressedSize(), args);
     }
-
-    // XXXBHG - what is this trying to do?
-    //      This code appears to be trying to set the color of the destination root
-    //      of a copy operation. But that shouldn't be necessary. I think this code might
-    //      have been a hack that Mark added when he was trying to solve the copy of a single
-    //      voxel bug. But this won't solve that problem, and doesn't appear to be needed for
-    //      a normal copy operation. I'm leaving this in for a little bit until we see if anything
-    //      about copy/paste is broken.
-    //
-    //OctreeElement* destinationStartNode;
-    //if (rebaseToRoot) {
-    //    destinationStartNode = destinationTree->_rootNode;
-    //} else {
-    //    destinationStartNode = nodeForOctalCode(destinationTree->_rootNode, startNode->getOctalCode(), NULL);
-    //}
-    //destinationStartNode->setColor(startNode->getColor());
 }
 
-void Octree::copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinationNode) {
+void Octree::copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinationElement) {
     OctreeElementBag nodeBag;
     // If we were given a specific element, start from there, otherwise start from root
-    nodeBag.insert(sourceTree->_rootNode);
+    nodeBag.insert(sourceTree->_rootElement);
 
     static OctreePacketData packetData;
 
@@ -1737,7 +1721,7 @@ void Octree::copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinat
 
         // ask destination tree to read the bitstream
         bool wantImportProgress = true;
-        ReadBitstreamToTreeParams args(WANT_COLOR, NO_EXISTS_BITS, destinationNode, 0, SharedNodePointer(), wantImportProgress);
+        ReadBitstreamToTreeParams args(WANT_COLOR, NO_EXISTS_BITS, destinationElement, 0, SharedNodePointer(), wantImportProgress);
         readBitstreamToTree(packetData.getUncompressedData(), packetData.getUncompressedSize(), args);
     }
 }
diff --git a/libraries/octree/src/Octree.h b/libraries/octree/src/Octree.h
index 4c430bfe3a..6e0693dc23 100644
--- a/libraries/octree/src/Octree.h
+++ b/libraries/octree/src/Octree.h
@@ -166,7 +166,7 @@ class ReadBitstreamToTreeParams {
 public:
     bool includeColor;
     bool includeExistsBits;
-    OctreeElement* destinationNode;
+    OctreeElement* destinationElement;
     QUuid sourceUUID;
     SharedNodePointer sourceNode;
     bool wantImportProgress;
@@ -174,13 +174,13 @@ public:
     ReadBitstreamToTreeParams(
         bool includeColor = WANT_COLOR,
         bool includeExistsBits = WANT_EXISTS_BITS,
-        OctreeElement* destinationNode = NULL,
+        OctreeElement* destinationElement = NULL,
         QUuid sourceUUID = QUuid(),
         SharedNodePointer sourceNode = SharedNodePointer(),
         bool wantImportProgress = false) :
             includeColor(includeColor),
             includeExistsBits(includeExistsBits),
-            destinationNode(destinationNode),
+            destinationElement(destinationElement),
             sourceUUID(sourceUUID),
             sourceNode(sourceNode),
             wantImportProgress(wantImportProgress)
@@ -207,14 +207,14 @@ public:
 
     virtual void update() { }; // nothing to do by default
 
-    OctreeElement* getRoot() { return _rootNode; }
+    OctreeElement* getRoot() { return _rootElement; }
 
     void eraseAllOctreeElements();
 
     void processRemoveOctreeElementsBitstream(const unsigned char* bitstream, int bufferSizeBytes);
     void readBitstreamToTree(const unsigned char* bitstream,  unsigned long int bufferSizeBytes, ReadBitstreamToTreeParams& args);
     void deleteOctalCodeFromTree(const unsigned char* codeBuffer, bool collapseEmptyTrees = DONT_COLLAPSE);
-    void reaverageOctreeElements(OctreeElement* startNode = NULL);
+    void reaverageOctreeElements(OctreeElement* startElement = NULL);
 
     void deleteOctreeElementAt(float x, float y, float z, float s);
     
@@ -282,23 +282,23 @@ public:
 
     unsigned long getOctreeElementsCount();
 
-    void copySubTreeIntoNewTree(OctreeElement* startNode, Octree* destinationTree, bool rebaseToRoot);
-    void copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinationNode);
+    void copySubTreeIntoNewTree(OctreeElement* startElement, Octree* destinationTree, bool rebaseToRoot);
+    void copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinationElement);
 
     bool getShouldReaverage() const { return _shouldReaverage; }
 
-    void recurseNodeWithOperation(OctreeElement* element, RecurseOctreeOperation operation,
+    void recurseElementWithOperation(OctreeElement* element, RecurseOctreeOperation operation,
                 void* extraData, int recursionCount = 0);
 
 	/// Traverse child nodes of node applying operation in post-fix order
 	///
-    void recurseNodeWithPostOperation(OctreeElement* element, RecurseOctreeOperation operation,
+    void recurseElementWithPostOperation(OctreeElement* element, RecurseOctreeOperation operation,
                 void* extraData, int recursionCount = 0);
 
-    void recurseNodeWithOperationDistanceSorted(OctreeElement* element, RecurseOctreeOperation operation,
+    void recurseElementWithOperationDistanceSorted(OctreeElement* element, RecurseOctreeOperation operation,
                 const glm::vec3& point, void* extraData, int recursionCount = 0);
 
-    bool recurseNodeWithOperator(OctreeElement* element, RecurseOctreeOperator* operatorObject, int recursionCount = 0);
+    bool recurseElementWithOperator(OctreeElement* element, RecurseOctreeOperator* operatorObject, int recursionCount = 0);
 
     bool getIsViewing() const { return _isViewing; }
     void setIsViewing(bool isViewing) { _isViewing = isViewing; }
@@ -321,12 +321,12 @@ protected:
 
     static bool countOctreeElementsOperation(OctreeElement* element, void* extraData);
 
-    OctreeElement* nodeForOctalCode(OctreeElement* ancestorNode, const unsigned char* needleCode, OctreeElement** parentOfFoundNode) const;
-    OctreeElement* createMissingNode(OctreeElement* lastParentNode, const unsigned char* codeToReach);
-    int readNodeData(OctreeElement *destinationNode, const unsigned char* nodeData,
+    OctreeElement* nodeForOctalCode(OctreeElement* ancestorElement, const unsigned char* needleCode, OctreeElement** parentOfFoundElement) const;
+    OctreeElement* createMissingElement(OctreeElement* lastParentElement, const unsigned char* codeToReach);
+    int readElementData(OctreeElement *destinationElement, const unsigned char* nodeData,
                 int bufferSizeBytes, ReadBitstreamToTreeParams& args);
 
-    OctreeElement* _rootNode;
+    OctreeElement* _rootElement;
 
     bool _isDirty;
     bool _shouldReaverage;
diff --git a/libraries/particles/src/ParticleTree.cpp b/libraries/particles/src/ParticleTree.cpp
index 09e034ccd1..dd8cb6e618 100644
--- a/libraries/particles/src/ParticleTree.cpp
+++ b/libraries/particles/src/ParticleTree.cpp
@@ -12,7 +12,7 @@
 #include "ParticleTree.h"
 
 ParticleTree::ParticleTree(bool shouldReaverage) : Octree(shouldReaverage) {
-    _rootNode = createNewElement();
+    _rootElement = createNewElement();
 }
 
 ParticleTreeElement* ParticleTree::createNewElement(unsigned char * octalCode) {
diff --git a/libraries/particles/src/ParticleTree.h b/libraries/particles/src/ParticleTree.h
index 76b9926bdf..0a2ac285b7 100644
--- a/libraries/particles/src/ParticleTree.h
+++ b/libraries/particles/src/ParticleTree.h
@@ -29,7 +29,7 @@ public:
     virtual ParticleTreeElement* createNewElement(unsigned char * octalCode = NULL);
 
     /// Type safe version of getRoot()
-    ParticleTreeElement* getRoot() { return (ParticleTreeElement*)_rootNode; }
+    ParticleTreeElement* getRoot() { return static_cast<ParticleTreeElement*>(_rootElement); }
 
 
     // These methods will allow the OctreeServer to send your tree inbound edit packets of your
diff --git a/libraries/voxels/src/VoxelTree.cpp b/libraries/voxels/src/VoxelTree.cpp
index b1ddf2e5b0..6372d7fd6d 100644
--- a/libraries/voxels/src/VoxelTree.cpp
+++ b/libraries/voxels/src/VoxelTree.cpp
@@ -23,13 +23,13 @@
 
 VoxelTree::VoxelTree(bool shouldReaverage) : Octree(shouldReaverage) 
 {
-    _rootNode = createNewElement();
+    _rootElement = createNewElement();
 }
 
 VoxelTreeElement* VoxelTree::createNewElement(unsigned char * octalCode) {
     VoxelSystem* voxelSystem = NULL;
-    if (_rootNode) {
-        voxelSystem = ((VoxelTreeElement*)_rootNode)->getVoxelSystem();
+    if (_rootElement) {
+        voxelSystem = (static_cast<VoxelTreeElement*>(_rootElement))->getVoxelSystem();
     }
     VoxelTreeElement* newElement = new VoxelTreeElement(octalCode);
     newElement->setVoxelSystem(voxelSystem);
diff --git a/libraries/voxels/src/VoxelTree.h b/libraries/voxels/src/VoxelTree.h
index eb24c182b2..2915774fe3 100644
--- a/libraries/voxels/src/VoxelTree.h
+++ b/libraries/voxels/src/VoxelTree.h
@@ -26,7 +26,7 @@ public:
     VoxelTree(bool shouldReaverage = false);
 
     virtual VoxelTreeElement* createNewElement(unsigned char * octalCode = NULL);
-    VoxelTreeElement* getRoot() { return (VoxelTreeElement*)_rootNode; }
+    VoxelTreeElement* getRoot() { return static_cast<VoxelTreeElement*>(_rootElement); }
 
     void deleteVoxelAt(float x, float y, float z, float s);
     

From c3f6cc0ccbb11ec070617f99f4ffbecacd5bdf39 Mon Sep 17 00:00:00 2001
From: ZappoMan <bradh@konamoxt.com>
Date: Tue, 6 May 2014 15:50:54 -0700
Subject: [PATCH 11/13] code cleanup for style guide

---
 libraries/octree/src/Octree.cpp | 29 +++++++++--------------------
 1 file changed, 9 insertions(+), 20 deletions(-)

diff --git a/libraries/octree/src/Octree.cpp b/libraries/octree/src/Octree.cpp
index 8228249777..d308d007cd 100644
--- a/libraries/octree/src/Octree.cpp
+++ b/libraries/octree/src/Octree.cpp
@@ -130,8 +130,6 @@ void Octree::recurseElementWithOperationDistanceSorted(OctreeElement* element, R
             if (childElement) {
                 // chance to optimize, doesn't need to be actual distance!! Could be distance squared
                 float distanceSquared = childElement->distanceSquareToPoint(point);
-                //qDebug("recurseElementWithOperationDistanceSorted() CHECKING child[%d] point=%f,%f center=%f,%f distance=%f...\n", i, point.x, point.y, center.x, center.y, distance);
-                //childElement->printDebugDetails("");
                 currentCount = insertIntoSortedArrays((void*)childElement, distanceSquared, i,
                                                       (void**)&sortedChildren, (float*)&distancesToChildren,
                                                       (int*)&indexOfChildren, currentCount, NUMBER_OF_CHILDREN);
@@ -141,8 +139,6 @@ void Octree::recurseElementWithOperationDistanceSorted(OctreeElement* element, R
         for (int i = 0; i < currentCount; i++) {
             OctreeElement* childElement = sortedChildren[i];
             if (childElement) {
-                //qDebug("recurseElementWithOperationDistanceSorted() PROCESSING child[%d] distance=%f...\n", i, distancesToChildren[i]);
-                //childElement->printDebugDetails("");
                 recurseElementWithOperationDistanceSorted(childElement, operation, point, extraData);
             }
         }
@@ -1167,7 +1163,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
         // even if they don't in our local tree
         bool notMyJurisdiction = false;
         if (params.jurisdictionMap) {
-            notMyJurisdiction = (JurisdictionMap::WITHIN != params.jurisdictionMap->isMyJurisdiction(element->getOctalCode(), i));
+            notMyJurisdiction = JurisdictionMap::WITHIN != params.jurisdictionMap->isMyJurisdiction(element->getOctalCode(), i);
         }
         if (params.includeExistsBits) {
             // If the child is known to exist, OR, it's not my jurisdiction, then we mark the bit as existing
@@ -1206,8 +1202,9 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
 
         bool childIsInView  = (childElement && 
                 ( !params.viewFrustum || // no view frustum was given, everything is assumed in view
-                  (nodeLocationThisView == ViewFrustum::INSIDE) || // the parent was fully in view, we can assume ALL children are
-                  (nodeLocationThisView == ViewFrustum::INTERSECT && childElement->isInView(*params.viewFrustum)) // the parent intersects and the child is in view
+                  (nodeLocationThisView == ViewFrustum::INSIDE) || // parent was fully in view, we can assume ALL children are
+                  (nodeLocationThisView == ViewFrustum::INTERSECT && 
+                        childElement->isInView(*params.viewFrustum)) // the parent intersects and the child is in view
                 ));
 
         if (!childIsInView) {
@@ -1217,7 +1214,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
             }
         } else {
             // Before we determine consider this further, let's see if it's in our LOD scope...
-            float distance = distancesToChildren[i]; // params.viewFrustum ? childElement->distanceToCamera(*params.viewFrustum) : 0;
+            float distance = distancesToChildren[i];
             float boundaryDistance = !params.viewFrustum ? 1 :
                                      boundaryDistanceForRenderLevel(childElement->getLevel() + params.boundaryLevelAdjust,
                                             params.octreeElementSizeScale);
@@ -1249,7 +1246,7 @@ int Octree::encodeTreeBitstreamRecursion(OctreeElement* element,
                     OctreeProjectedPolygon* voxelPolygon = new OctreeProjectedPolygon(
                                 params.viewFrustum->getProjectedPolygon(voxelBox));
 
-                    // In order to check occlusion culling, the shadow has to be "all in view" otherwise, we will ignore occlusion
+                    // In order to check occlusion culling, the shadow has to be "all in view" otherwise, we ignore occlusion
                     // culling and proceed as normal
                     if (voxelPolygon->getAllInView()) {
                         CoverageMapStorageResult result = params.map->checkMap(voxelPolygon, true);
@@ -1649,7 +1646,7 @@ void Octree::writeToSVOFile(const char* fileName, OctreeElement* element) {
             bytesWritten = encodeTreeBitstream(subTree, &packetData, nodeBag, params);
             unlock();
 
-            // if the subTree couldn't fit, and so we should reset the packet and reinsert the element in our bag and try again...
+            // if the subTree couldn't fit, and so we should reset the packet and reinsert the element in our bag and try again
             if (bytesWritten == 0 && (params.stopReason == EncodeBitstreamParams::DIDNT_FIT)) {
                 if (packetData.hasContent()) {
                     file.write((const char*)packetData.getFinalizedData(), packetData.getFinalizedSize());
@@ -1721,20 +1718,12 @@ void Octree::copyFromTreeIntoSubTree(Octree* sourceTree, OctreeElement* destinat
 
         // ask destination tree to read the bitstream
         bool wantImportProgress = true;
-        ReadBitstreamToTreeParams args(WANT_COLOR, NO_EXISTS_BITS, destinationElement, 0, SharedNodePointer(), wantImportProgress);
+        ReadBitstreamToTreeParams args(WANT_COLOR, NO_EXISTS_BITS, destinationElement, 
+                                            0, SharedNodePointer(), wantImportProgress);
         readBitstreamToTree(packetData.getUncompressedData(), packetData.getUncompressedSize(), args);
     }
 }
 
-void dumpSetContents(const char* name, std::set<unsigned char*> set) {
-    qDebug("set %s has %ld elements", name, set.size());
-    /*
-    for (std::set<unsigned char*>::iterator i = set.begin(); i != set.end(); ++i) {
-        printOctalCode(*i);
-    }
-    */
-}
-
 void Octree::cancelImport() {
     _stopImport = true;
 }

From 911b8cd62334a3cb607cafd0254070939fcf9fbd Mon Sep 17 00:00:00 2001
From: Ryan Huffman <ryanhuffman@gmail.com>
Date: Tue, 6 May 2014 16:17:40 -0700
Subject: [PATCH 12/13] Update welcome screen

---
 .../html/interface-welcome-allsvg.html        | 759 ++++++++++++++----
 1 file changed, 624 insertions(+), 135 deletions(-)

diff --git a/interface/resources/html/interface-welcome-allsvg.html b/interface/resources/html/interface-welcome-allsvg.html
index 0b45a4d717..d025f8059b 100644
--- a/interface/resources/html/interface-welcome-allsvg.html
+++ b/interface/resources/html/interface-welcome-allsvg.html
@@ -1,139 +1,628 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<div style="width: 780px; margin: 0 auto;">
+<div style="width: 839px; margin: 0 auto;">
 <input type="hidden" id="version" value="1" />
-<svg width="780px" height="754px" viewBox="0 0 780 754" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns">
-    <title>Welcome to Interface</title>
-    <description>Created with Sketch (http://www.bohemiancoding.com/sketch)</description>
-    <defs></defs>
-    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
-        <text id="What-you-can-do-with" fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="36" font-weight="bold" sketch:alignment="middle">
-            <tspan x="110" y="78">What you can do with Hifi so far:</tspan>
-        </text>
-        <text id="Move-around." fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="24" font-weight="bold">
-            <tspan x="159" y="150">Move around.</tspan>
-        </text>
-        <text id="Listen-and-talk." fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="24" font-weight="bold">
-            <tspan x="45" y="428">Listen and talk.</tspan>
-        </text>
-        <text id="Build-something." fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="24" font-weight="bold">
-            <tspan x="283" y="428">Build something.</tspan>
-        </text>
-        <text id="Connect-devices." fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="24" font-weight="bold">
-            <tspan x="541" y="428">Connect devices.</tspan>
-        </text>
-        <text id="Look-around." fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="24" font-weight="bold">
-            <tspan x="424" y="150">Look around.</tspan>
-        </text>
-        <text id="Move-around-with-WAS" fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="14" font-weight="normal" line-spacing="19">
-            <tspan x="159" y="320">Move around with WASD</tspan>
-            <tspan x="159" y="339">&amp; fly up or down with E &amp; C</tspan>
-        </text>
-        <text id="Use-your-best-headph" fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="14" font-weight="normal" line-spacing="19">
-            <tspan x="45" y="597">Use your best headphones </tspan>
-            <tspan x="45" y="616">and microphone for high fidelity </tspan>
-            <tspan x="45" y="635">audio. Look for the blue balls </tspan>
-            <tspan x="45" y="654">around the universe – walk up </tspan>
-            <tspan x="45" y="673">to them (they become people </tspan>
-            <tspan x="45" y="692">as you get closer) and talk!</tspan>
-        </text>
-        <text id="Refer-to-the-Tools-m" fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="14" font-weight="normal" line-spacing="19">
-            <tspan x="283" y="597">Refer to the Tools menu for </tspan>
-            <tspan x="283" y="616">available tools. Each tool is a </tspan>
-            <tspan x="283" y="635">‘mode’ that enables actions through </tspan>
-            <tspan x="283" y="654">clicking. Press the V key to enter </tspan>
-            <tspan x="283" y="673">voxel ‘add mode’ where you’ll be </tspan>
-            <tspan x="283" y="692">able to click to add a voxel.</tspan>
-        </text>
-        <text id="Have-an-Oculus-Rift-" fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="14" font-weight="normal" line-spacing="19">
-            <tspan x="541" y="597">Have an Oculus Rift or a </tspan>
-            <tspan x="541" y="616">Leap Motion? Gyros in your </tspan>
-            <tspan x="541" y="635">headset? An Xbox Kinect? </tspan>
-            <tspan x="541" y="654">We have experimental </tspan>
-            <tspan x="541" y="673">features for them all.</tspan>
-        </text>
-        <text id="Use-two-fingers-to-l" fill="#000000" sketch:type="MSTextLayer" font-family="Helvetica" font-size="14" font-weight="normal" line-spacing="19">
-            <tspan x="424" y="320">Use two fingers to look</tspan>
-            <tspan x="424" y="339">around via the trackpad</tspan>
-        </text>
-        <path d="M17.5269504,384.5 L759.500002,384.5" id="Line" stroke="#BFBFBF" stroke-linecap="square" sketch:type="MSShapeGroup"></path>
-        <path d="M17.5269504,108.5 L759.500002,108.5" id="Line-copy" stroke="#BFBFBF" stroke-linecap="square" sketch:type="MSShapeGroup"></path>
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From 9c9556914e466f01fccfc9f6f62d1e77ec19c1d1 Mon Sep 17 00:00:00 2001
From: Atlante45 <clement.brisset@gmail.com>
Date: Tue, 6 May 2014 17:03:19 -0700
Subject: [PATCH 13/13] Slow down hydra move

---
 examples/hydraMove.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/examples/hydraMove.js b/examples/hydraMove.js
index b73f990446..ad0eeddfca 100644
--- a/examples/hydraMove.js
+++ b/examples/hydraMove.js
@@ -31,14 +31,14 @@ var grabbingWithLeftHand = false;
 var wasGrabbingWithLeftHand = false;
 var EPSILON = 0.000001;
 var velocity = { x: 0, y: 0, z: 0};
-var THRUST_MAG_UP = 800.0;
-var THRUST_MAG_DOWN = 300.0;
-var THRUST_MAG_FWD = 500.0;
-var THRUST_MAG_BACK = 300.0;
-var THRUST_MAG_LATERAL = 250.0;
+var THRUST_MAG_UP = 100.0;
+var THRUST_MAG_DOWN = 100.0;
+var THRUST_MAG_FWD = 150.0;
+var THRUST_MAG_BACK = 100.0;
+var THRUST_MAG_LATERAL = 150.0;
 var THRUST_JUMP = 120.0;
 
-var YAW_MAG = 500.0;
+var YAW_MAG = 100.0;
 var PITCH_MAG = 100.0;
 var THRUST_MAG_HAND_JETS = THRUST_MAG_FWD;
 var JOYSTICK_YAW_MAG = YAW_MAG;