add support to not displace very large clipboards on import

examples/edit.js

@@ -1030,8 +1030,11 @@ function importSVO(importURL) {
     var success = Clipboard.importEntities(importURL);
 
     if (success) {
-        var position = getPositionToCreateEntity();
-
+        var VERY_LARGE = 10000;
+        var position = { x: 0, y: 0, z: 0};
+        if (Clipboard.getClipboardContentsLargestDimension() < VERY_LARGE) {
+            position = getPositionToCreateEntity();
+        }
         var pastedEntityIDs = Clipboard.pasteEntities(position);
 
         if (isActive) {

interface/src/scripting/ClipboardScriptingInterface.cpp

@@ -14,6 +14,10 @@
 ClipboardScriptingInterface::ClipboardScriptingInterface() {
 }
 
+float ClipboardScriptingInterface::getClipboardContentsLargestDimension() {
+    return Application::getInstance()->getEntityClipboard()->getContentsLargestDimension();
+}
+
 bool ClipboardScriptingInterface::exportEntities(const QString& filename, const QVector<EntityItemID>& entityIDs) {
     return Application::getInstance()->exportEntities(filename, entityIDs);
 }

interface/src/scripting/ClipboardScriptingInterface.h

@@ -22,6 +22,7 @@ signals:
     void readyToImport();
     
 public slots:
+    float getClipboardContentsLargestDimension(); /// returns the largest dimension of everything on the clipboard
     bool importEntities(const QString& filename);
     bool exportEntities(const QString& filename, const QVector<EntityItemID>& entityIDs);
     bool exportEntities(const QString& filename, float x, float y, float z, float s);

libraries/entities/src/EntityTree.cpp

@@ -1068,6 +1068,27 @@ void EntityTree::debugDumpMap() {
     qCDebug(entities) << "-----------------------------------------------------";
 }
 
+class ContentsDimensionOperator : public RecurseOctreeOperator {
+public:
+    virtual bool preRecursion(OctreeElement* element);
+    virtual bool postRecursion(OctreeElement* element) { return true; }
+    float getLargestDimension() const { return _contentExtents.largestDimension(); }
+private:
+    Extents _contentExtents;
+};
+
+bool ContentsDimensionOperator::preRecursion(OctreeElement* element) {
+    EntityTreeElement* entityTreeElement = static_cast<EntityTreeElement*>(element);
+    entityTreeElement->expandExtentsToContents(_contentExtents);
+    return true;
+}
+
+float EntityTree::getContentsLargestDimension() {
+    ContentsDimensionOperator theOperator;
+    recurseTreeWithOperator(&theOperator);
+    return theOperator.getLargestDimension();
+}
+
 class DebugOperator : public RecurseOctreeOperator {
 public:
     virtual bool preRecursion(OctreeElement* element);

libraries/entities/src/EntityTree.h

@@ -166,6 +166,8 @@ public:
 
     bool writeToMap(QVariantMap& entityDescription, OctreeElement* element, bool skipDefaultValues);
     bool readFromMap(QVariantMap& entityDescription);
+    
+    float getContentsLargestDimension();
 
 signals:
     void deletingEntity(const EntityItemID& entityID);

libraries/entities/src/EntityTreeElement.cpp

@@ -819,6 +819,16 @@ bool EntityTreeElement::pruneChildren() {
     return somethingPruned;
 }
 
+void EntityTreeElement::expandExtentsToContents(Extents& extents) {
+    if (_entityItems->size()) {
+        for (uint16_t i = 0; i < _entityItems->size(); i++) {
+            EntityItem* entity = (*_entityItems)[i];
+            extents.add(entity->getAABox());
+        }
+    }
+}
+
+
 
 void EntityTreeElement::debugDump() {
     qCDebug(entities) << "EntityTreeElement...";

libraries/entities/src/EntityTreeElement.h

@@ -196,6 +196,8 @@ public:
 
     bool pruneChildren();
 
+    void expandExtentsToContents(Extents& extents);
+
 protected:
     virtual void init(unsigned char * octalCode);
     EntityTree* _myTree;

libraries/shared/src/Extents.cpp

@@ -14,6 +14,7 @@
 #include <glm/gtx/quaternion.hpp>
 #include <glm/gtx/transform.hpp>
 
+#include "AABox.h"
 #include "Extents.h"
 
 void Extents::reset() {
@@ -37,6 +38,11 @@ void Extents::addPoint(const glm::vec3& point) {
     maximum = glm::max(maximum, point);
 }
 
+void Extents::add(const AABox& box) {
+     minimum = glm::min(minimum, box.getMinimumPoint());
+     maximum = glm::max(maximum, box.getMaximumPoint());
+}
+
 void Extents::rotate(const glm::quat& rotation) {
     glm::vec3 bottomLeftNear(minimum.x, minimum.y, minimum.z);
     glm::vec3 bottomRightNear(maximum.x, minimum.y, minimum.z);

libraries/shared/src/Extents.h

@@ -19,6 +19,8 @@
 #include <QDebug>
 #include "StreamUtils.h"
 
+class AABox;
+
 class Extents {
 public:
     /// set minimum and maximum to FLT_MAX and -FLT_MAX respectively
@@ -28,6 +30,10 @@ public:
     /// expand current limits to contain other extents
     void addExtents(const Extents& extents);
 
+    /// \param aabox another intance of extents
+    /// expand current limits to contain other aabox
+    void add(const AABox& box);
+
     /// \param point new point to compare against existing limits
     /// compare point to current limits and expand them if necessary to contain point
     void addPoint(const glm::vec3& point);