Baby steps toward new animation system

* AnimNode pure virtual base class for all animation nodes.
* AnimClip playback of a single FBX animation.

libraries/animation/src/AnimClip.h

@@ -0,0 +1,26 @@
+//
+//  AnimClip.h
+//
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi_AnimClip_h
+#define hifi_AnimClip_h
+
+class AnimClip : public AnimNode {
+
+    void setURL(const std::string& url);
+    void setStartFrame(AnimFrame startFrame);
+    void setEndFrame(AnimFrame startFrame);
+    void setLoopFlag(bool loopFlag);
+    void setTimeScale(float timeScale);
+
+public:
+    virtual const float getEnd() const;
+    virtual const AnimPose& evaluate(float t);
+};
+
+#endif // hifi_AnimClip_h

libraries/animation/src/AnimNode.h

@@ -0,0 +1,19 @@
+//
+//  AnimInterface.h
+//
+//  Copyright 2015 High Fidelity, Inc.
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+#ifndef hifi_AnimNode_h
+#define hifi_AnimNode_h
+
+class AnimNode {
+public:
+    virtual float getEnd() const = 0;
+    virtual const AnimPose& evaluate(float t) = 0;
+};
+
+#endif // hifi_AnimNode_h