实现在图像任意角度的旋转，平移。以及图像的镜像，扭曲。波浪效果，缩小放大裁剪，以及对图像的裁剪。... (1).rar

////////////////////////////////////////////////////////////////////////////////////////////////// // // File: stencilmirror.cpp // // Author: Frank Luna (C) All Rights Reserved // // System: AMD Athlon 1800+ XP, 512 DDR, Geforce 3, Windows XP, MSVC++ 7.0 // // Desc: Demonstrates mirrors with stencils. Use the arrow keys // and the 'A' and 'S' key to navigate the scene and translate the teapot. // ////////////////////////////////////////////////////////////////////////////////////////////////// #include "d3dUtility.h" // // Globals // IDirect3DDevice9* Device = 0; const int Width = 640; const int Height = 480; IDirect3DVertexBuffer9* VB = 0; //纹理 IDirect3DTexture9* FloorTex = 0; // 地面纹理 IDirect3DTexture9* WallTex = 0; // 墙面纹理 IDirect3DTexture9* MirrorTex = 0; // 镜子纹理 //材质 D3DMATERIAL9 FloorMtrl = d3d::WHITE_MTRL; // 地面材质 D3DMATERIAL9 WallMtrl = d3d::WHITE_MTRL; // 墙面材质 D3DMATERIAL9 MirrorMtrl = d3d::WHITE_MTRL; // 镜面材质 D3DMATERIAL9 TeapotMtrl = d3d::RED_MTRL; // 茶壶材质 ID3DXMesh* Teapot = 0; // 茶壶模型 D3DXVECTOR3 TeapotPosition(0.0f, 3.0f, -7.5f); // 茶壶位置 D3DXMATRIX mTotal; // 最终矩阵 //场景渲染函数 void RenderScene(float timeDelta); //镜子渲染函数 void RenderMirror(); struct Vertex { Vertex(){} Vertex(float x, float y, float z, float nx, float ny, float nz, float u, float v) { _x = x; _y = y; _z = z; _nx = nx; _ny = ny; _nz = nz; _u = u; _v = v; } float _x, _y, _z; float _nx, _ny, _nz; float _u, _v; static const DWORD FVF; }; const DWORD Vertex::FVF = D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1; // 初始化函数 bool Setup() { //镜面反光率为20%，（这个值越大，材质就越亮） WallMtrl.Specular = d3d::WHITE * 0.2f; //创建茶壶 D3DXCreateTeapot(Device, &Teapot, 0); // // 创建并且指定顶点. 在这个例子中，我们创建一个地面、墙和墙上的镜子。 // 我们把地面、墙、镜子的顶点放在一个缓存中 // // |----|----|----| // |Wall|Mirr|Wall| // | | or | | // /--------------/ // / Floor / // /--------------/ // Device->CreateVertexBuffer( 24 * sizeof(Vertex), 0, // usage Vertex::FVF, D3DPOOL_MANAGED, &VB, 0); Vertex* v = 0; VB->Lock(0, 0, (void**)&v, 0); // floor v[0] = Vertex(-7.5f, 0.0f, -10.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f); v[1] = Vertex(-7.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f); v[2] = Vertex( 7.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f); v[3] = Vertex(-7.5f, 0.0f, -10.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f); v[4] = Vertex( 7.5f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f); v[5] = Vertex( 7.5f, 0.0f, -10.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f); // left wall v[6] = Vertex(-7.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[7] = Vertex(-7.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f); v[8] = Vertex(-2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[9] = Vertex(-7.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[10] = Vertex(-2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[11] = Vertex(-2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f); // right wall v[12] = Vertex(2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[13] = Vertex(2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f); v[14] = Vertex(7.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[15] = Vertex(2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[16] = Vertex(7.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[17] = Vertex(7.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f); // mirror v[18] = Vertex(-2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[19] = Vertex(-2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f); v[20] = Vertex( 2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[21] = Vertex(-2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f); v[22] = Vertex( 2.5f, 5.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f); v[23] = Vertex( 2.5f, 0.0f, 0.0f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f); VB->Unlock(); // 装载纹理(地面、墙面、镜子) D3DXCreateTextureFromFile(Device, "checker.jpg", &FloorTex); D3DXCreateTextureFromFile(Device, "brick0.jpg", &WallTex); D3DXCreateTextureFromFile(Device, "checker.jpg", &MirrorTex); //过滤器 Device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR); //放大时的过滤效果 Device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR); //缩小时的过滤效果 Device->SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_LINEAR); // 设置光 D3DXVECTOR3 lightDir(0.707f, -0.707f, 0.707f); // 光的方向 D3DXCOLOR color(1.0f, 1.0f, 1.0f, 1.0f); // 光的颜色 D3DLIGHT9 light = d3d::InitDirectionalLight(&lightDir, &color); // 初始化光 Device->SetLight(0, &light); // 设置索引为0的一个光源 Device->LightEnable(0, true); // 启动索引为0的光源 //在顶点变换时，顶点的法线会变成非标准化的，这个操作将标准化所有顶点法线 Device->SetRenderState(D3DRS_NORMALIZENORMALS, true); //默认光的状态不考虑镜面高光，要使用镜面光，将D3DRS_SPECULARENABLE设为true（可以感觉到光在不同位置的反射） Device->SetRenderState(D3DRS_SPECULARENABLE, true); // 进行视图变换（设置摄像机） D3DXVECTOR3 pos(-10.0f, 3.0f, -15.0f); D3DXVECTOR3 target(0.0, 0.0f, 0.0f); D3DXVECTOR3 up(0.0f, 1.0f, 0.0f); D3DXMATRIX V; D3DXMatrixLookAtLH(&V, &pos, &target, &up); Device->SetTransform(D3DTS_VIEW, &V); // 设置投影矩阵（将3D空间转换成2D空间） D3DXMATRIX proj; D3DXMatrixPerspectiveFovLH( &proj, D3DX_PI / 4.0f, // 90 degree (float)Width / (float)Height, 1.0f, 1000.0f); Device->SetTransform(D3DTS_PROJECTION, &proj); return true; } bool Display(float timeDelta) { if( Device ) { //移动茶壶的处理 static float radius = 20.0f; if( ::GetAsyncKeyState(VK_LEFT) & 0x8000f ) TeapotPosition.x -= 3.0f * timeDelta; if( ::GetAsyncKeyState(VK_RIGHT) & 0x8000f ) TeapotPosition.x += 3.0f * timeDelta; if( ::GetAsyncKeyState(VK_UP) & 0x8000f ) TeapotPosition.z += 3.0f * timeDelta; if( ::GetAsyncKeyState(VK_DOWN) & 0x8000f ) TeapotPosition.z -= 3.0f * timeDelta; //移动摄像机的处理 static float angle = (3.0f * D3DX_PI) / 2.0f; if( ::GetAsyncKeyState('W') & 0x8000f ) radius -= 4.0f * timeDelta; if( ::GetAsyncKeyState('S') & 0x8000f ) radius += 4.0f * timeDelta; if( ::GetAsyncKeyState('A') & 0x8000f ) angle -= 0.5f * timeDelta; if( ::GetAsyncKeyState('D') & 0x8000f ) angle += 0.5f * timeDelta; //设置摄像机，进行视图变换 D3DXVECTOR3 position( cosf(angle) * radius, 3.0f, sinf(angle) * radius ); D3DXVECTOR3 target(0.0f, 0.0f, 0.0f); D3DXVECTOR3 up(0.0f, 1.0f, 0.0f); D3DXMATRIX V; D3DXMatrixLookAtLH(&V, &position, &target, &up); Device->SetTransform(D3DTS_VIEW, &V); // 画场景 Device->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER | D3DCLEAR_STENCIL, D3DCOLOR_XRGB(100, 100, 100), 1.0f, 0); Device->BeginScene(); RenderScene( timeDelta ); // 渲染场景 RenderMirror(); // 渲染镜子中的场景（只有茶壶在镜子中） Device->EndScene(); // 后备表面的交换 Device->Present(0, 0, 0, 0); } return true; } void RenderScene(float timeDelta) { // 进行世界变换 ------------------------------------------------------------- D3DXMATRIX mRotY, mTran; static float y = 0.0f; y += timeDelta; if( y >= 6.28f ) y = 0.0f; D3DXMatrixRotationY(&mRotY, y); // 先旋转 D3DXMatrixTranslation(&mTran, // 后平移 TeapotPosition.x, TeapotPosition.y, TeapotPosition.z); mTotal = mRotY * mTran; // 最终矩阵 = 旋转矩阵 * 平移矩阵 // 渲染茶壶 Device->SetMaterial( &TeapotMtrl ); // 设置材质 Device->SetTexture(0, 0); // 设置纹理 Device->SetTransform(D3DTS_WORLD, &mTotal); // 设置变换 Teapot->DrawSubset(0); // 绘制茶壶 // -------------------------------------------------------------------------- //标准化世界矩阵 D3DXM