shadow.h

《3D游戏编程》随书光盘 12章: 设计阴影的多种技巧, 有详细源代码

//-----------------------------------------------------------------------------
// File: Shadow.h
//
// Desc: Header file Shadow sample app
//-----------------------------------------------------------------------------
#pragma once




//-----------------------------------------------------------------------------
// Defines, and constants
//-----------------------------------------------------------------------------
// TODO: change "DirectX AppWizard Apps" to your name or the company name
#define DXAPP_KEY        TEXT("Software\\DirectX AppWizard Apps\\Shadow")

// Struct to store the current input state
struct UserInput
{
    // TODO: change as needed
    BOOL bRotateUp;
    BOOL bRotateDown;
    BOOL bRotateLeft;
    BOOL bRotateRight;
};


//-----------------------------------------------------------------------------
// Name: class CMyD3DApplication
// Desc: Application class. The base class (CD3DApplication) provides the 
//       generic functionality needed in all Direct3D samples. CMyD3DApplication 
//       adds functionality specific to this sample program.
//-----------------------------------------------------------------------------
class CMyD3DApplication : public CD3DApplication
{
    BOOL                    m_bLoadingApp;          // TRUE, if the app is loading
    CD3DFont*               m_pFont;                // Font for drawing text
    CD3DMesh*               m_pMeshOcc;				// CD3DMesh
    
	CD3DMesh*				m_pMeshFloor;			// CD3DMesh
	
	D3DXVECTOR4				m_vLightPos;			// 绘制阴影的光源
	D3DXPLANE				m_planeFloor;			// 绘制阴影的平面方程式
	D3DXMATRIXA16			m_matWorld;
	D3DXMATRIXA16			m_matView;
	D3DXMATRIXA16			m_matProj;

    UserInput               m_UserInput;            // Struct for storing user input 

    FLOAT                   m_fWorldRotX;           // World rotation state X-axis
    FLOAT                   m_fWorldRotY;           // World rotation state Y-axis
	BOOL					m_bWireframe;
	BOOL					m_bShadow;
	BOOL					m_bVolume;

	LPDIRECT3DVERTEXDECLARATION9	m_pDecl;		// 顶点声明信息
	LPDIRECT3DVERTEXSHADER9	m_pVS;					// 顶点着色器

protected:
    virtual HRESULT OneTimeSceneInit();
    virtual HRESULT InitDeviceObjects();
    virtual HRESULT RestoreDeviceObjects();
    virtual HRESULT InvalidateDeviceObjects();
    virtual HRESULT DeleteDeviceObjects();
    virtual HRESULT Render();
    virtual HRESULT FrameMove();
    virtual HRESULT FinalCleanup();
    virtual HRESULT ConfirmDevice( D3DCAPS9*, DWORD, D3DFORMAT );

    HRESULT RenderText();

    void    UpdateInput( UserInput* pUserInput );
	void	DrawFloor();
	void	DrawReceiver();
	void	DrawCaster();
	void	DrawShadow();
	void	DrawStencil();
	HRESULT	InitVS();
	void	SetupVSConst();

public:
    LRESULT MsgProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam );
    CMyD3DApplication();
    virtual ~CMyD3DApplication();
};