Bugfix: fixed a bug that caused the 'maintain volume' constraint to be badlu applied on objects.

git-svn-id: https://jmonkeyengine.googlecode.com/svn/branches/gradle-restructure@11104 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

jme3-blender/src/main/java/com/jme3/scene/plugins/blender/constraints/definitions/ConstraintDefinitionMaintainVolume.java

@@ -1,5 +1,6 @@
 package com.jme3.scene.plugins.blender.constraints.definitions;
 
+import com.jme3.animation.Bone;
 import com.jme3.math.Transform;
 import com.jme3.scene.plugins.blender.BlenderContext;
 import com.jme3.scene.plugins.blender.constraints.ConstraintHelper.Space;
@@ -20,6 +21,9 @@ public class ConstraintDefinitionMaintainVolume extends ConstraintDefinition {
     @Override
     public void bake(Space ownerSpace, Space targetSpace, Transform targetTransform, float influence) {
         if (volume != 1 && influence > 0) {
+            // the maintain volume constraint is applied directly to object's scale, so no need to do it again
+            // but in case of bones we need to make computations
+            if (this.getOwner() instanceof Bone) {
                 Transform ownerTransform = this.getOwnerTransform(ownerSpace);
                 switch (flag) {
                     case FLAG_MASK_X:
@@ -37,6 +41,7 @@ public class ConstraintDefinitionMaintainVolume extends ConstraintDefinition {
                 this.applyOwnerTransform(ownerTransform, ownerSpace);
             }
         }
+    }
 
     @Override
     public String getConstraintTypeName() {