source: downloads/ogre/Tests/PlayPen/include/AnimationBlender.h @ 56

// From http://www.ogre3d.org/wiki/index.php/AnimationBlender

#include "OgreEntity.h"

using namespace Ogre;

class AnimationBlender
{
public:
        enum BlendingTransition
        {
                BlendSwitch,         // stop source and start dest
                BlendWhileAnimating,   // cross fade, blend source animation out while blending destination animation in
                BlendThenAnimate      // blend source to first frame of dest, when done, start dest anim
        };

private:
        Entity *mEntity;
        AnimationState *mSource;
        AnimationState *mTarget;

        BlendingTransition mTransition;

        bool loop;

        ~AnimationBlender() {}

public: 
        Real mTimeleft, mDuration;

        bool complete;

        void blend( const String &animation, BlendingTransition transition, Real duration, bool loop );
        void addTime( Real );
        Real getProgress() { return mTimeleft/ mDuration; }
        AnimationState *getSource() { return mSource; }
        AnimationState *getTarget() { return mTarget; }
        AnimationBlender( Entity *);
        void init( const String &animation );
};