Changed animations to allow support for morph style (linear blend

between deformed meshes) and flipbook style (simple switch between 
deformed meshes) in addition to skin style (meshes deformed in real 
time).  Currently, the resolution is the same as the animation frame 
rate.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4176 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/jme/model/ModelSpatial.java

@@ -64,15 +64,28 @@ public interface ModelSpatial
     public void resolveTextures (TextureProvider tprov);
     
     /**
-     * Recursively sets the quantized animation frame.  For skinned meshes,
-     * the first time the frame is set causes the current skin to be stored
-     * in a table shared by all instances.  At subsequent times, the stored
-     * skin is displayed.
+     * Recursively requests that the current state of all skinned meshes be
+     * stored as an animation frame on the next update.
      *
      * @param frameId the frame id, which uniquely identifies one frame of
      * one animation
+     * @param blend whether or not the stored frames will be retrieved by
+     * calls to {@link #blendAnimationFrames} as opposed to
+     * {@link #setAnimationFrames}
      */
-    public void setAnimationFrame (int frameId);
+    public void storeMeshFrame (int frameId, boolean blend);
+    
+    /**
+     * Recursively switches all skinned meshes to a stored animation frame for
+     * the next update.
+     */
+    public void setMeshFrame (int frameId);
+    
+    /**
+     * Recursively blends all skinned meshes between two stored animation
+     * frames for the next update.
+     */
+    public void blendMeshFrames (int frameId1, int frameId2, float alpha);
     
     /**
      * Creates or populates and returns a clone of this object using the given