dxutcamera.h

声音和图片的加载功能,不过运行起来有点卡

    bool                  m_bMovementDrag;        // If true, then camera movement will slow to a stop otherwise movement is instant
    D3DXVECTOR3           m_vVelocityDrag;        // Velocity drag force
    FLOAT                 m_fDragTimer;           // Countdown timer to apply drag
    FLOAT                 m_fTotalDragTimeToZero; // Time it takes for velocity to go from full to 0
    D3DXVECTOR2           m_vRotVelocity;         // Velocity of camera

    float                 m_fFOV;                 // Field of view
    float                 m_fAspect;              // Aspect ratio
    float                 m_fNearPlane;           // Near plane
    float                 m_fFarPlane;            // Far plane

    float                 m_fRotationScaler;      // Scaler for rotation
    float                 m_fMoveScaler;          // Scaler for movement

    bool                  m_bInvertPitch;         // Invert the pitch axis
    bool                  m_bEnablePositionMovement; // If true, then the user can translate the camera/model 
    bool                  m_bEnableYAxisMovement; // If true, then camera can move in the y-axis

    bool                  m_bClipToBoundary;      // If true, then the camera will be clipped to the boundary
    D3DXVECTOR3           m_vMinBoundary;         // Min point in clip boundary
    D3DXVECTOR3           m_vMaxBoundary;         // Max point in clip boundary

    bool                  m_bResetCursorAfterMove;// If true, the class will reset the cursor position so that the cursor always has space to move 
};


//--------------------------------------------------------------------------------------
// Simple first person camera class that moves and rotates.
//       It allows yaw and pitch but not roll.  It uses WM_KEYDOWN and 
//       GetCursorPos() to respond to keyboard and mouse input and updates the 
//       view matrix based on input.  
//--------------------------------------------------------------------------------------
class CFirstPersonCamera : public CBaseCamera
{
public:
    CFirstPersonCamera();

    // Call these from client and use Get*Matrix() to read new matrices
    virtual void FrameMove( FLOAT fElapsedTime );

    // Functions to change behavior
    void SetRotateButtons( bool bLeft, bool bMiddle, bool bRight, bool bRotateWithoutButtonDown = false );

    // Functions to get state
    D3DXMATRIX*  GetWorldMatrix()            { return &m_mCameraWorld; }

    const D3DXVECTOR3* GetWorldRight() const { return (D3DXVECTOR3*)&m_mCameraWorld._11; } 
    const D3DXVECTOR3* GetWorldUp() const    { return (D3DXVECTOR3*)&m_mCameraWorld._21; }
    const D3DXVECTOR3* GetWorldAhead() const { return (D3DXVECTOR3*)&m_mCameraWorld._31; }
    const D3DXVECTOR3* GetEyePt() const      { return (D3DXVECTOR3*)&m_mCameraWorld._41; }

protected:
    D3DXMATRIX m_mCameraWorld;       // World matrix of the camera (inverse of the view matrix)

    int        m_nActiveButtonMask;  // Mask to determine which button to enable for rotation
    bool       m_bRotateWithoutButtonDown;
};


//--------------------------------------------------------------------------------------
// Simple model viewing camera class that rotates around the object.
//--------------------------------------------------------------------------------------
class CModelViewerCamera : public CBaseCamera
{
public:
    CModelViewerCamera();

    // Call these from client and use Get*Matrix() to read new matrices
    virtual LRESULT HandleMessages( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
    virtual void FrameMove( FLOAT fElapsedTime );

   
    // Functions to change behavior
    virtual void SetDragRect( RECT &rc );
    void Reset(); 
    void SetViewParams( D3DXVECTOR3* pvEyePt, D3DXVECTOR3* pvLookatPt );
    void SetButtonMasks( int nRotateModelButtonMask = MOUSE_LEFT_BUTTON, int nZoomButtonMask = MOUSE_WHEEL, int nRotateCameraButtonMask = MOUSE_RIGHT_BUTTON ) { m_nRotateModelButtonMask = nRotateModelButtonMask, m_nZoomButtonMask = nZoomButtonMask; m_nRotateCameraButtonMask = nRotateCameraButtonMask; }
    void SetAttachCameraToModel( bool bEnable = false ) { m_bAttachCameraToModel = bEnable; }
    void SetWindow( int nWidth, int nHeight, float fArcballRadius=0.9f ) { m_WorldArcBall.SetWindow( nWidth, nHeight, fArcballRadius ); m_ViewArcBall.SetWindow( nWidth, nHeight, fArcballRadius ); }
    void SetRadius( float fDefaultRadius=5.0f, float fMinRadius=1.0f, float fMaxRadius=FLT_MAX  ) { m_fDefaultRadius = m_fRadius = fDefaultRadius; m_fMinRadius = fMinRadius; m_fMaxRadius = fMaxRadius; m_bDragSinceLastUpdate = true; }
    void SetModelCenter( D3DXVECTOR3 vModelCenter ) { m_vModelCenter = vModelCenter; }
    void SetLimitPitch( bool bLimitPitch ) { m_bLimitPitch = bLimitPitch; }
    void SetViewQuat( D3DXQUATERNION q ) { m_ViewArcBall.SetQuatNow( q ); m_bDragSinceLastUpdate = true; }
    void SetWorldQuat( D3DXQUATERNION q ) { m_WorldArcBall.SetQuatNow( q ); m_bDragSinceLastUpdate = true; }

    // Functions to get state
    const D3DXMATRIX* GetWorldMatrix() const { return &m_mWorld; }
    void SetWorldMatrix( D3DXMATRIX &mWorld ) { m_mWorld = mWorld; m_bDragSinceLastUpdate = true; }

protected:
    CD3DArcBall  m_WorldArcBall;
    CD3DArcBall  m_ViewArcBall;
    D3DXVECTOR3  m_vModelCenter;
    D3DXMATRIX   m_mModelLastRot;        // Last arcball rotation matrix for model 
    D3DXMATRIX   m_mModelRot;            // Rotation matrix of model
    D3DXMATRIX   m_mWorld;               // World matrix of model

    int          m_nRotateModelButtonMask;
    int          m_nZoomButtonMask;
    int          m_nRotateCameraButtonMask;

    bool         m_bAttachCameraToModel;
    bool         m_bLimitPitch;
    float        m_fRadius;              // Distance from the camera to model 
    float        m_fDefaultRadius;       // Distance from the camera to model 
    float        m_fMinRadius;           // Min radius
    float        m_fMaxRadius;           // Max radius
    bool         m_bDragSinceLastUpdate; // True if mouse drag has happened since last time FrameMove is called.

    D3DXMATRIX   m_mCameraRotLast;

};

//--------------------------------------------------------------------------------------
// Manages the mesh, direction, mouse events of a directional arrow that 
// rotates around a radius controlled by an arcball 
//--------------------------------------------------------------------------------------
class CDXUTDirectionWidget
{
public:
    CDXUTDirectionWidget();

    static HRESULT WINAPI StaticOnD3D9CreateDevice( IDirect3DDevice9* pd3dDevice );
    HRESULT OnD3D9ResetDevice( const D3DSURFACE_DESC* pBackBufferSurfaceDesc );
    HRESULT OnRender9( D3DXCOLOR color, const D3DXMATRIX* pmView, const D3DXMATRIX* pmProj, const D3DXVECTOR3* pEyePt );
    LRESULT HandleMessages( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
    static void WINAPI StaticOnD3D9LostDevice();
    static void WINAPI StaticOnD3D9DestroyDevice();

    static HRESULT WINAPI StaticOnD3D10CreateDevice( ID3D10Device* pd3dDevice );
    HRESULT OnRender10( D3DXCOLOR color, const D3DXMATRIX* pmView, const D3DXMATRIX* pmProj, const D3DXVECTOR3* pEyePt );
    static void WINAPI StaticOnD3D10DestroyDevice();

    D3DXVECTOR3 GetLightDirection()         { return m_vCurrentDir; };
    void        SetLightDirection( D3DXVECTOR3 vDir ) { m_vDefaultDir = m_vCurrentDir = vDir; };
    void        SetButtonMask( int nRotate = MOUSE_RIGHT_BUTTON ) { m_nRotateMask = nRotate; }

    float GetRadius()                 { return m_fRadius; };
    void  SetRadius( float fRadius )  { m_fRadius = fRadius; };

    bool  IsBeingDragged() { return m_ArcBall.IsBeingDragged(); };

protected:
    HRESULT UpdateLightDir();

    // D3D9 objects
    static IDirect3DDevice9* s_pd3d9Device;
    static ID3DXEffect* s_pD3D9Effect;
    static ID3DXMesh*   s_pD3D9Mesh;

    // D3D10 objects
    static ID3D10Device* s_pd3d10Device;
    static ID3D10Effect* s_pD3D10Effect;
    //TODO: add some sort of d3d10 mesh object here
    static ID3D10InputLayout* s_pVertexLayout;
    static ID3D10EffectTechnique* s_pRenderTech;
    static ID3D10EffectVectorVariable* g_pMaterialDiffuseColor;
    static ID3D10EffectVectorVariable* g_pLightDir;  
    static ID3D10EffectMatrixVariable* g_pmWorld;
    static ID3D10EffectMatrixVariable* g_pmWorldViewProjection; 

    D3DXMATRIXA16  m_mRot;
    D3DXMATRIXA16  m_mRotSnapshot;
    float          m_fRadius;
    int            m_nRotateMask;
    CD3DArcBall    m_ArcBall;
    D3DXVECTOR3    m_vDefaultDir;
    D3DXVECTOR3    m_vCurrentDir;
    D3DXMATRIX     m_mView;
};



#endif