//=============================================================================
  // SkinnedMesh.h by Frank Luna (C) 2005 All Rights Reserved.
  //=============================================================================
  
  ifndef SKINNED_MESH_H
  define SKINNED_MESH_H
  
  include <d3dUtil.h>
  
  struct FrameEx : public D3DXFRAME
  {
          D3DXMATRIX toRoot;
  };
  
  class SkinnedMesh
  {
  public:
          SkinnedMesh(std::string XFilename);
          ~SkinnedMesh();
  
          UINT numVertices();
          UINT numTriangles();
          UINT numBones();
          const D3DXMATRIX* getFinalXFormArray();
  
          void update(float deltaTime);
          void draw();
  
  protected:
          D3DXFRAME* findNodeWithMesh(D3DXFRAME* frame);
          bool hasNormals(ID3DXMesh* mesh);
          void buildSkinnedMesh(ID3DXMesh* mesh);
          void buildToRootXFormPtrArray();
          void buildToRootXForms(FrameEx* frame, D3DXMATRIX& parentsToRoot);
  
          // We do not implement the required functionality to do deep copies,
          // so restrict copying.
          SkinnedMesh(const SkinnedMesh& rhs);
          SkinnedMesh& operator=(const SkinnedMesh& rhs);
  
  protected:
          ID3DXMesh*     mSkinnedMesh;
          D3DXFRAME*     mRoot;
          DWORD          mMaxVertInfluences;
          DWORD          mNumBones;
          ID3DXSkinInfo* mSkinInfo;
          ID3DXAnimationController* mAnimCtrl;  
          
          std::vector<D3DXMATRIX>  mFinalXForms;
          std::vector<D3DXMATRIX*> mToRootXFormPtrs;
  
          static const int MAX_NUM_BONES_SUPPORTED = 35; 
  };
  
  endif // SKINNED_MESH_H