vertexblend.cpp

DX例子中等难度的。全是新例子。VC2003

    g_SampleUI.SetLocation( pBackBufferSurfaceDesc->Width-170, 
		                    pBackBufferSurfaceDesc->Height-350 );
    g_SampleUI.SetSize( 170, 300 );

	//恢复字体
    if( g_pFont )
        V_RETURN( g_pFont->OnResetDevice() );
   
	//创建ID3DXSprite接口对象
    V_RETURN( D3DXCreateSprite( pd3dDevice, &g_pTextSprite ) );

	//设置观察矩阵
	D3DXMATRIXA16 matView;
	D3DXVECTOR3 vEyePt( 0.0f, 0.0f,-10 );
    D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f );
    D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f );
    D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
    pd3dDevice->SetTransform( D3DTS_VIEW, &matView );

	//设置投影矩阵
	D3DXMATRIXA16 matProj;
	float fAspectRatio = (float)pBackBufferSurfaceDesc->Width / pBackBufferSurfaceDesc->Height;
    D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, fAspectRatio, 1.0f, 100.0f );
    pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );

	//设置材质
	D3DMATERIAL9 mtrl;
	ZeroMemory( &mtrl, sizeof(D3DMATERIAL9) );
	mtrl.Ambient.r = mtrl.Diffuse.r = 1.0f;
	mtrl.Ambient.g = mtrl.Diffuse.g = 1.0f;
	mtrl.Ambient.b = mtrl.Diffuse.b = 1.0f;
	mtrl.Ambient.a = mtrl.Diffuse.a = 1.0f;
	pd3dDevice->SetMaterial( &mtrl );

	//设置灯光
	D3DLIGHT9 light;
	D3DXVECTOR3 vecDir;
	ZeroMemory( &light, sizeof(D3DLIGHT9) );
	light.Type = D3DLIGHT_DIRECTIONAL;
	light.Diffuse.r = 1.0f;
	light.Diffuse.g = 1.0f;
	light.Diffuse.b = 0.0f;
	vecDir = D3DXVECTOR3(0,0,10); //方向光方向
	D3DXVec3Normalize( (D3DXVECTOR3*)&light.Direction, &vecDir );
	pd3dDevice->SetLight( 0, &light );
	pd3dDevice->LightEnable( 0, true );
	pd3dDevice->SetRenderState( D3DRS_LIGHTING, true );

	pd3dDevice->SetRenderState( D3DRS_AMBIENT, 0x00404040 );

    return S_OK;
}


//-----------------------------------------------------------------------------
// Desc: 更新场景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameMove( IDirect3DDevice9* pd3dDevice, double fTime, 
						   float fElapsedTime, void* pUserContext )
{
	//构造骨骼矩阵
	D3DXVECTOR3 vAxis( 2 + sinf( (float)fTime*3.1f), 2 + sinf( (float)fTime*3.3f), 
		              sinf( (float)fTime*3.5f) ); 
	D3DXMatrixRotationAxis( &g_matLowerArm, &vAxis, sinf(3*(float)fTime) );
	D3DXMatrixIdentity( &g_matUpperArm );

	//设置顶点混合方式和骨骼矩阵
	pd3dDevice->SetRenderState( D3DRS_VERTEXBLEND, D3DVBF_1WEIGHTS );
	pd3dDevice->SetTransform( D3DTS_WORLDMATRIX(0),  &g_matUpperArm );
	pd3dDevice->SetTransform( D3DTS_WORLDMATRIX(1), &g_matLowerArm );
}


//-----------------------------------------------------------------------------
// Desc: 渲染场景
//-----------------------------------------------------------------------------
void CALLBACK OnFrameRender( IDirect3DDevice9* pd3dDevice, double fTime, 
							float fElapsedTime, void* pUserContext )
{
    HRESULT hr;
  
	//如果正在利用Direct3D设备设置对话框进行设置, 则不渲染场景
    if( g_SettingsDlg.IsActive() )
    {
        g_SettingsDlg.OnRender( fElapsedTime );
        return;
    }

    //清除后台颜色缓冲区和深度缓冲区
    V( pd3dDevice->Clear(0, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 
		                 D3DCOLOR_ARGB(0, 45, 50, 170), 1.0f, 0) );

    //渲染场景
    if( SUCCEEDED( pd3dDevice->BeginScene() ) )
    {
		//渲染网格模型
		g_pVertexBlendMesh->Render( pd3dDevice );

		//渲染文本和控件
        DXUT_BeginPerfEvent( DXUT_PERFEVENTCOLOR, L"HUD / Stats" ); 
        RenderText();
        V( g_HUD.OnRender( fElapsedTime ) );
        V( g_SampleUI.OnRender( fElapsedTime ) );
        DXUT_EndPerfEvent();

        V( pd3dDevice->EndScene() );
    }
}


//-----------------------------------------------------------------------------
// Desc: 渲染文本
//-----------------------------------------------------------------------------
void RenderText()
{
    CDXUTTextHelper txtHelper( g_pFont, g_pTextSprite, 15 );

    //显示当前Direct3D设备状态和渲染帧速率
    txtHelper.Begin();
    txtHelper.SetInsertionPos( 5, 5 );
    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 0.0f, 1.0f ) );
    txtHelper.DrawTextLine( DXUTGetFrameStats(true) );
    txtHelper.DrawTextLine( DXUTGetDeviceStats() );

	//显示其他简要信息
    txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
    txtHelper.DrawTextLine( L"顶点混合" );
    
    //显示简单帮助文本
    const D3DSURFACE_DESC* pd3dsdBackBuffer = DXUTGetBackBufferSurfaceDesc();
    if( g_bShowHelp )
    {
        txtHelper.SetInsertionPos( 10, pd3dsdBackBuffer->Height-15*6 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 0.75f, 0.0f, 1.0f ) );
        txtHelper.DrawTextLine( L"Controls (F1 to hide):" );

        txtHelper.SetInsertionPos( 40, pd3dsdBackBuffer->Height-15*5 );
        txtHelper.DrawTextLine( L"Quit: ESC" );
    }
    else
    {
        txtHelper.SetInsertionPos( 10, pd3dsdBackBuffer->Height-15*2 );
        txtHelper.SetForegroundColor( D3DXCOLOR( 1.0f, 1.0f, 1.0f, 1.0f ) );
        txtHelper.DrawTextLine( L"Press F1 for help" );
    }
    txtHelper.End();
}


//-----------------------------------------------------------------------------
// Desc: 消息处理
//-----------------------------------------------------------------------------
LRESULT CALLBACK MsgProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, 
						 bool* pbNoFurtherProcessing, void* pUserContext )
{
    *pbNoFurtherProcessing = g_DialogResourceManager.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;

    if( g_SettingsDlg.IsActive() )
    {
        g_SettingsDlg.MsgProc( hWnd, uMsg, wParam, lParam );
        return 0;
    }

    *pbNoFurtherProcessing = g_HUD.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;
   
	*pbNoFurtherProcessing = g_SampleUI.MsgProc( hWnd, uMsg, wParam, lParam );
    if( *pbNoFurtherProcessing )
        return 0;

    return 0;
}


//-----------------------------------------------------------------------------
// Desc: 键盘消息处理
//-----------------------------------------------------------------------------
void CALLBACK KeyboardProc( UINT nChar, bool bKeyDown, bool bAltDown, void* pUserContext )
{
    if( bKeyDown )
    {
        switch( nChar )
        {
            case VK_F1: g_bShowHelp = !g_bShowHelp; break;
        }
    }
}


//-----------------------------------------------------------------------------
// Desc: 处理各种控件消息
//-----------------------------------------------------------------------------
void CALLBACK OnGUIEvent( UINT nEvent, int nControlID, CDXUTControl* pControl, 
						 void* pUserContext )
{
    switch( nControlID )
    {
        case IDC_TOGGLEFULLSCREEN:
			DXUTToggleFullScreen(); 
			break;

        case IDC_TOGGLEREF:
			DXUTToggleREF(); 
			break;

        case IDC_CHANGEDEVICE:
			g_SettingsDlg.SetActive( !g_SettingsDlg.IsActive() ); 
			break;
    }
}


//-----------------------------------------------------------------------------
// Desc: 释放在OnResetDevice()中创建的资源
//-----------------------------------------------------------------------------
void CALLBACK OnLostDevice( void* pUserContext )
{
    g_DialogResourceManager.OnLostDevice();
    g_SettingsDlg.OnLostDevice();
    if( g_pFont )
        g_pFont->OnLostDevice();
    SAFE_RELEASE( g_pTextSprite );
}


//------------------------------------------------------------------------------
// Desc: 释放在OnCreateDevice()中创建的资源
//------------------------------------------------------------------------------
void CALLBACK OnDestroyDevice( void* pUserContext )
{
    g_DialogResourceManager.OnDestroyDevice();
    g_SettingsDlg.OnDestroyDevice();
    SAFE_RELEASE( g_pFont );

	g_pVertexBlendMesh->Destroy();
}