Apply the neck position.

interface/src/avatar/FaceModel.cpp

@@ -22,9 +22,18 @@ void FaceModel::simulate(float deltaTime) {
         return;
     }
 
-    const Skeleton& skeleton = static_cast<Avatar*>(_owningHead->_owningAvatar)->getSkeleton();
-    setTranslation(skeleton.joint[AVATAR_JOINT_NECK_BASE].position);
-    setRotation(skeleton.joint[AVATAR_JOINT_NECK_BASE].absoluteRotation);
+    Avatar* owningAvatar = static_cast<Avatar*>(_owningHead->_owningAvatar);
+    const Skeleton& skeleton = owningAvatar->getSkeleton();
+    glm::vec3 neckPosition;
+    if (!owningAvatar->getSkeletonModel().getNeckPosition(neckPosition)) {
+        neckPosition = owningAvatar->getSkeleton().joint[AVATAR_JOINT_NECK_BASE].position;
+    }
+    setTranslation(neckPosition);
+    glm::quat neckRotation;
+    if (true || !owningAvatar->getSkeletonModel().getNeckRotation(neckRotation)) {
+        neckRotation = owningAvatar->getSkeleton().joint[AVATAR_JOINT_NECK_BASE].absoluteRotation;
+    }
+    setRotation(neckRotation);
     const float MODEL_SCALE = 0.0006f;
     setScale(glm::vec3(-1.0f, 1.0f, -1.0f) * _owningHead->getScale() * MODEL_SCALE);
     const glm::vec3 MODEL_TRANSLATION(0.0f, -60.0f, 40.0f); // temporary fudge factor

interface/src/renderer/Model.cpp

@@ -85,10 +85,6 @@ void Model::simulate(float deltaTime) {
         _resetStates = true;
     }
     
-    // create our root transform
-    glm::mat4 baseTransform = glm::translate(_translation) * glm::mat4_cast(_rotation) *
-        glm::scale(_scale) * glm::translate(_offset);
-    
     // update the world space transforms for all joints
     for (int i = 0; i < _jointStates.size(); i++) {
         updateJointState(i);
@@ -351,6 +347,14 @@ bool Model::getHeadPosition(glm::vec3& headPosition) const {
     return isActive() && getJointPosition(_geometry->getFBXGeometry().headJointIndex, headPosition);
 }
 
+bool Model::getNeckPosition(glm::vec3& neckPosition) const {
+    return isActive() && getJointPosition(_geometry->getFBXGeometry().neckJointIndex, neckPosition);
+}
+
+bool Model::getNeckRotation(glm::quat& neckRotation) const {
+    return isActive() && getJointRotation(_geometry->getFBXGeometry().neckJointIndex, neckRotation);
+}
+
 bool Model::getEyePositions(glm::vec3& firstEyePosition, glm::vec3& secondEyePosition) const {
     if (!isActive()) {
         return false;
@@ -404,6 +408,15 @@ bool Model::getJointPosition(int jointIndex, glm::vec3& position) const {
     return true;
 }
 
+bool Model::getJointRotation(int jointIndex, glm::quat& rotation) const {
+    if (jointIndex == -1 || _jointStates.isEmpty()) {
+        return false;
+    }
+    const glm::mat4& transform = _jointStates[jointIndex].transform;
+    rotation = glm::normalize(glm::quat_cast(transform));
+    return true;
+}
+
 void Model::deleteGeometry() {
     foreach (GLuint id, _blendedVertexBufferIDs) {
         glDeleteBuffers(1, &id);

interface/src/renderer/Model.h

@@ -58,6 +58,14 @@ public:
     /// \return whether or not the head was found
     bool getHeadPosition(glm::vec3& headPosition) const;
     
+    /// Returns the position of the neck joint.
+    /// \return whether or not the neck was found
+    bool getNeckPosition(glm::vec3& neckPosition) const;
+    
+    /// Returns the rotation of the neck joint.
+    /// \return whether or not the neck was found
+    bool getNeckRotation(glm::quat& neckRotation) const;
+    
     /// Retrieve the positions of up to two eye meshes.
     /// \return whether or not both eye meshes were found
     bool getEyePositions(glm::vec3& firstEyePosition, glm::vec3& secondEyePosition) const;
@@ -88,6 +96,7 @@ protected:
 private:
     
     bool getJointPosition(int jointIndex, glm::vec3& position) const;
+    bool getJointRotation(int jointIndex, glm::quat& rotation) const;
     
     void deleteGeometry();