Added onLoadComplete signal to MyAvatar

This can be used in javaScript to detect when the model has finished loading because the url has changed or the model has been reset.

interface/src/avatar/MyAvatar.cpp

@@ -198,6 +198,8 @@ MyAvatar::MyAvatar(RigPointer rig) :
             _headData->setLookAtPosition(headData->getLookAtPosition());
         }
     });
+
+    connect(rig.get(), SIGNAL(onLoadComplete()), SLOT(onRigLoadComplete()));
 }
 
 MyAvatar::~MyAvatar() {
@@ -2080,7 +2082,7 @@ float MyAvatar::getAccelerationEnergy() {
     int changeInVelocity = abs(velocity.length() - priorVelocity.length());
     float changeInEnergy = priorVelocity.length() * changeInVelocity * AVATAR_MOVEMENT_ENERGY_CONSTANT;
     priorVelocity = velocity;
-    
+
     return changeInEnergy;
 }
 
@@ -2103,3 +2105,6 @@ bool MyAvatar::didTeleport() {
     return (changeInPosition.length() > MAX_AVATAR_MOVEMENT_PER_FRAME);
 }
 
+void MyAvatar::onRigLoadComplete() {
+    emit onLoadComplete();
+}

interface/src/avatar/MyAvatar.h

@@ -295,7 +295,7 @@ signals:
     void collisionWithEntity(const Collision& collision);
     void energyChanged(float newEnergy);
     void positionGoneTo();
-
+    void onLoadComplete();
 
 private:
 
@@ -469,6 +469,8 @@ private:
     float getEnergy();
     void setEnergy(float value);
     bool didTeleport();
+private slots:
+    void onRigLoadComplete();
 };
 
 QScriptValue audioListenModeToScriptValue(QScriptEngine* engine, const AudioListenerMode& audioListenerMode);

libraries/animation/src/Rig.cpp

@@ -1161,6 +1161,7 @@ void Rig::initAnimGraph(const QUrl& url) {
             overrideAnimation(origState.url, origState.fps, origState.loop, origState.firstFrame, origState.lastFrame);
         }
 
+        emitOnLoadComplete();
     });
     connect(_animLoader.get(), &AnimNodeLoader::error, [url](int error, QString str) {
         qCCritical(animation) << "Error loading" << url.toDisplayString() << "code = " << error << "str =" << str;

libraries/animation/src/Rig.h

@@ -32,6 +32,7 @@ typedef std::shared_ptr<Rig> RigPointer;
 // However only specific methods thread-safe.  Noted below.
 
 class Rig : public QObject, public std::enable_shared_from_this<Rig> {
+    Q_OBJECT
 public:
     struct StateHandler {
         AnimVariantMap results;
@@ -223,7 +224,11 @@ public:
 
     const glm::mat4& getGeometryToRigTransform() const { return _geometryToRigTransform; }
 
- protected:
+signals:
+    void onLoadComplete();
+
+protected:
+    void emitOnLoadComplete() { emit onLoadComplete(); }
     bool isIndexValid(int index) const { return _animSkeleton && index >= 0 && index < _animSkeleton->getNumJoints(); }
     void updateAnimationStateHandlers();
     void applyOverridePoses();