From 6cfdf96deac0fd1a8a371bb3ec3bb9b1980147dd Mon Sep 17 00:00:00 2001
From: Philip Rosedale <philip@coffeeandpower.com>
Date: Tue, 14 May 2013 17:11:16 -0700
Subject: [PATCH] Added mouse panning in the Yaw direction - at edges of
 screen.

---
 interface/src/Application.cpp | 19 ++++++++++++-------
 interface/src/Avatar.cpp      | 17 +++++++++++++++++
 interface/src/Avatar.h        |  1 +
 3 files changed, 30 insertions(+), 7 deletions(-)

diff --git a/interface/src/Application.cpp b/interface/src/Application.cpp
index 65c29d2d88..1f11a63367 100644
--- a/interface/src/Application.cpp
+++ b/interface/src/Application.cpp
@@ -859,6 +859,9 @@ void Application::idle() {
             _handControl.stop();
         }
         
+        //  Update from Mouse
+        _myAvatar.updateFromMouse(_mouseX, _mouseY, _glWidget->width(), _glWidget->height());
+       
         //  Read serial port interface devices
         if (_serialPort.active) {
             _serialPort.readData();
@@ -1162,8 +1165,8 @@ void Application::init() {
     
     _handControl.setScreenDimensions(_glWidget->width(), _glWidget->height());
 
-    _headMouseX = _glWidget->width()/2;
-    _headMouseY = _glWidget->height()/2; 
+    _headMouseX = _mouseX = _glWidget->width() / 2;
+    _headMouseY = _mouseY = _glWidget->height() / 2;
 
     _stars.readInput(STAR_FILE, STAR_CACHE_FILE, 0);
   
@@ -1173,7 +1176,9 @@ void Application::init() {
     a.distance  = 1.5f;
     a.tightness = 8.0f;
     _myCamera.setMode(CAMERA_MODE_THIRD_PERSON, a);
-    _myAvatar.setDisplayingHead(true);   
+    _myAvatar.setDisplayingHead(true);
+    
+    QCursor::setPos(_headMouseX, _headMouseY);
     
     OculusManager::connect();
     
@@ -1228,7 +1233,6 @@ void Application::updateAvatar(float deltaTime) {
                                 renderPitchSpring * deltaTime * -_myAvatar.getHeadPitch() * RENDER_PITCH_MULTIPLY);
     }
     
-    
     if (OculusManager::isConnected()) {
         float yaw, pitch, roll;
         OculusManager::getEulerAngles(yaw, pitch, roll);
@@ -1900,12 +1904,13 @@ void Application::deleteVoxelUnderCursor() {
 
 void Application::resetSensors() {
     _myAvatar.setPosition(START_LOCATION);
-    _headMouseX = _glWidget->width() / 2;
-    _headMouseY = _glWidget->height() / 2;
+    _headMouseX = _mouseX = _glWidget->width() / 2;
+    _headMouseY = _mouseY = _glWidget->height() / 2;
     
     if (_serialPort.active) {
         _serialPort.resetAverages();
-    } 
+    }
+    QCursor::setPos(_headMouseX, _headMouseY);
     _myAvatar.reset();
 }
 
diff --git a/interface/src/Avatar.cpp b/interface/src/Avatar.cpp
index 64b9310b78..4203bd0d4c 100644
--- a/interface/src/Avatar.cpp
+++ b/interface/src/Avatar.cpp
@@ -291,6 +291,23 @@ bool Avatar::getIsNearInteractingOther() {
     return _avatarTouch.getAbleToReachOtherAvatar(); 
 }
 
+void  Avatar::updateFromMouse(int mouseX, int mouseY, int screenWidth, int screenHeight) {
+    //  Update pitch and yaw based on mouse behavior
+    const float MOUSE_MOVE_RADIUS = 0.25f;
+    const float MOUSE_ROTATE_SPEED = 7.5f;
+    float mouseLocationX = (float)mouseX / (float)screenWidth - 0.5f;
+    
+    if (fabs(mouseLocationX) > MOUSE_MOVE_RADIUS) {
+        float mouseMag = (fabs(mouseLocationX) - MOUSE_MOVE_RADIUS) / (0.5f - MOUSE_MOVE_RADIUS) * MOUSE_ROTATE_SPEED;
+        setBodyYaw(getBodyYaw() -
+                             ((mouseLocationX > 0.f) ?
+                              mouseMag :
+                              -mouseMag) );
+    }
+    
+    return;
+}
+
 void Avatar::simulate(float deltaTime) {
 
     //figure out if the mouse cursor is over any body spheres... 
diff --git a/interface/src/Avatar.h b/interface/src/Avatar.h
index beca93b53e..c4075858e1 100644
--- a/interface/src/Avatar.h
+++ b/interface/src/Avatar.h
@@ -82,6 +82,7 @@ public:
 
     void  reset();
     void  updateHeadFromGyros(float frametime, SerialInterface * serialInterface, glm::vec3 * gravity);
+    void  updateFromMouse(int mouseX, int mouseY, int screenWidth, int screenHeight);
     void  setNoise (float mag) {_head.noise = mag;}
     void  setRenderYaw(float y) {_renderYaw = y;}
     void  setRenderPitch(float p) {_renderPitch = p;}