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CreateMeshX.cpp
资源名称：Direct3D.rar　[点击查看]
上传用户：junlon
上传日期：2022-01-05
资源大小：39075k
文件大小：10k
源码类别：

DirextX编程

开发平台：

Visual C++

CreateMeshX.cpp：源码内容
  1. #include "zfxd3dUtility.h"
  2. #include <stdio.h>
  5. // D3D对象接口
  6. IDirect3D9* g_pd3d;
  7. // D3D设备接口
  8. IDirect3DDevice9* g_pd3dDevice;
  9. // D3D模型接口
  10. ID3DXMesh* g_pMesh = NULL;
  11. IDirect3DTexture9** g_ppTex;
  12. D3DMATERIAL9* g_pMtrl;
  14. DWORD g_numXMtrl;
  17. // 顶点结构体
  18. typedef struct tagCUSTOMVERTEX{
  19. D3DXVECTOR3 position; // The position of the vertex.
  20.     D3DXVECTOR3 normal;   // The nomal Vector.
  21. FLOAT       tu, tv;   // The texture coordinates
  22. static const DWORD D3D_FVF;
  23. }CUSTOMVERTEX;
  25. const DWORD CUSTOMVERTEX::D3D_FVF = D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX1;
  27. // 字体
  28. ID3DXFont* g_pFont = NULL;
  31. bool Setup()
  32. {
  33. // 创建模型
  34. HRESULT hr = 0;
  35. hr = D3DXCreateMeshFVF(
  36. 196,  // NumFaces
  37. 202,  // NumVertices
  38. D3DXMESH_MANAGED,
  39. CUSTOMVERTEX::D3D_FVF,
  40. g_pd3dDevice,
  41. &g_pMesh);
  43. if(FAILED(hr))
  44. {
  45. ::MessageBox(0, L"D3DXCreateMeshFVF() - FAILED", 0, 0);
  46. return false;
  47. }
  48. //*******************************填充顶点数据**********************************************************************//
  49. CUSTOMVERTEX *vertices;
  50. g_pMesh->LockVertexBuffer(0, (void**)&vertices);
  52. // 侧面，100个顶点
  53. for(int i=0;i<50;i++)
  54. {
  55. FLOAT alpha = (2*D3DX_PI*i)/49;
  56. vertices[2*i].position   =  D3DXVECTOR3( sinf(alpha), 1.0f, cosf(alpha));
  57. vertices[2*i].normal     =  D3DXVECTOR3( sinf(alpha), 0.0f, cosf(alpha));
  58. vertices[2*i].tu         =  (FLOAT)i/49;
  59. vertices[2*i].tv         =  1.0f;
  60. vertices[2*i+1].position =  D3DXVECTOR3( sinf(alpha),-1.0f, cosf(alpha));
  61. vertices[2*i+1].normal   =  D3DXVECTOR3( sinf(alpha), 0.0f, cosf(alpha));
  62. vertices[2*i+1].tu       =  (FLOAT)i/49;
  63. vertices[2*i+1].tv       =  0.0f;
  64. }
  65. // 顶部，51个顶点
  66. vertices[100].position = D3DXVECTOR3( 0.0f, 1.0f, 0.0f);
  67. vertices[100].normal   = D3DXVECTOR3( 0.0f, 1.0f, 0.0f);
  68. vertices[100].tu       = 0.5f;
  69. vertices[100].tv       = 0.5f;
  70. for(int i=101;i<151;i++)
  71. {
  72. FLOAT alpha = (2*D3DX_PI*i)/49;
  73. vertices[i].position   =  D3DXVECTOR3( sinf(alpha), 1.0f, cosf(alpha));
  74. vertices[i].normal     =  D3DXVECTOR3( 0.0f, 1.0f, 0.0f);
  75. vertices[i].tu         =  (sinf(alpha)+1)/2;
  76. vertices[i].tv         =  (cosf(alpha)+1)/2;
  77. }
  78. // 低部，51个顶点
  79. vertices[151].position = D3DXVECTOR3( 0.0f, -1.0f, 0.0f);
  80. vertices[151].normal   = D3DXVECTOR3( 0.0f, -1.0f, 0.0f);
  81. vertices[151].tu       = 0.5f;
  82. vertices[151].tv       = 0.5f;
  83. for(int i=152;i<202;i++)
  84. {
  85. FLOAT alpha = (2*D3DX_PI*i)/49;
  86. vertices[i].position   =  D3DXVECTOR3( sinf(alpha), -1.0f, cosf(alpha));
  87. vertices[i].normal     =  D3DXVECTOR3( 0.0f, -1.0f, 0.0f);
  88. vertices[i].tu         =  (sinf(alpha)+1)/2;
  89. vertices[i].tv         =  (cosf(alpha)+1)/2;
  90. }
  92. g_pMesh->UnlockVertexBuffer();
  93. //*******************************填充顶点数据**********************************************************************//
  95. //*******************************填充索引数据**********************************************************************//
  96. WORD* indices = 0;
  97. g_pMesh->LockIndexBuffer(0, (void**)&indices);
  98. // 侧面,98个三角形，填写索引顺序时一定要保证顶点顺序都是按照顺时针排列的
  99. for(int i=0;i<98;i++)
  100. {
  101. if(!(i%2))
  102. {
  103. indices[3*i] = i;
  104. indices[3*i+1] = i+1;
  105. indices[3*i+2] = i+2;
  106. }
  107. else
  108. {
  109. indices[3*i] = i+1;
  110. indices[3*i+1] = i;
  111. indices[3*i+2] = i+2;
  112. }
  113. }
  114. // 顶部,49个三角形
  115. for(int i=98;i<147;i++)
  116. {
  117. indices[3*i] = 100;
  118. indices[3*i+1] = i+3;
  119. indices[3*i+2] = i+4;
  120. }
  121. // 低部,49个三角形
  122. for(int i=147;i<196;i++)
  123. {
  124. indices[3*i] = 151;
  125. indices[3*i+1] = i+6;
  126. indices[3*i+2] = i+5;
  127. }
  128. g_pMesh->UnlockIndexBuffer();
  130. //*******************************填充索引数据**********************************************************************//
  132. //*******************************填充属性数据**********************************************************************//
  133. // 填充属性数据，分为3个子集
  134. DWORD* attributeBuffer = 0;
  135. g_pMesh->LockAttributeBuffer(0, &attributeBuffer);
  137. for(int i=0;i<98;i++)
  138. attributeBuffer[i] = 0;
  140. for(int i=98;i<147;i++)
  141. attributeBuffer[i] = 1;
  143. for(int i=147;i<196;i++)
  144. attributeBuffer[i] = 2;
  146. g_pMesh->UnlockAttributeBuffer();
  147. //*******************************填充属性数据**********************************************************************//
  150. // 产生邻接数据
  151. DWORD* pAdjacency = new DWORD[g_pMesh->GetNumFaces()*3];;
  152. g_pMesh->GenerateAdjacency(0.01f, pAdjacency);
  154. // 设置材质和纹理
  155. D3DXMATERIAL xMtrl[3];
  156. xMtrl[0].MatD3D = RED_MTRL;
  157. xMtrl[0].pTextureFilename = "sidetex.jpg";
  158. xMtrl[1].MatD3D = YELLOW_MTRL;
  159. xMtrl[1].pTextureFilename = "toptex.jpg";
  160. xMtrl[2].MatD3D = YELLOW_MTRL;
  161. xMtrl[2].pTextureFilename = "bottomtex.jpg";
  162. // 保存模型到文件中
  163. D3DXSaveMeshToX(L"cylinder.x", g_pMesh, pAdjacency, xMtrl, NULL, 3, D3DXF_FILEFORMAT_TEXT);
  164. delete [] pAdjacency;
  165. // 保存后释放g_pMesh对象
  166. SAFE_RELEASE(g_pMesh);
  168. //*******************************载入已存储的.X模型**********************************************************************//
  169. // 从.X文件中导入模型到g_pMesh对象中
  170. ID3DXBuffer* pMtrlBuffer;// 定义缓冲，记得一定要释放
  171. hr = D3DXLoadMeshFromX(L"cylinder.x", D3DXMESH_MANAGED, g_pd3dDevice, NULL, &pMtrlBuffer, NULL, &g_numXMtrl, &g_pMesh);
  172. if(FAILED(hr))
  173. {
  174. MessageBox(0, L"load mesh failed", 0, 0);
  175. return false;
  176. }
  177. D3DXMATERIAL* pMtrls = (D3DXMATERIAL*)pMtrlBuffer->GetBufferPointer();
  178. g_pMtrl = new D3DMATERIAL9[g_numXMtrl];
  179. g_ppTex = new IDirect3DTexture9*[g_numXMtrl];
  180. for(DWORD i=0;i<g_numXMtrl;i++)
  181. {
  182. g_pMtrl[i] = pMtrls[i].MatD3D;
  183. g_pMtrl[i].Ambient = g_pMtrl[i].Diffuse;
  184. g_ppTex[i] = 0;
  185. hr = D3DXCreateTextureFromFileA(g_pd3dDevice, pMtrls[i].pTextureFilename, &g_ppTex[i]);
  186. if(FAILED(hr))
  187. g_ppTex[i] = 0;
  188. }
  189. // 释放缓冲区
  190. SAFE_RELEASE(pMtrlBuffer);
  191. //*******************************载入已存储的.X模型，完毕****************************************************************//
  192. // 设定渲染状态
  193. g_pd3dDevice->SetRenderState(D3DRS_AMBIENT, 0xff444444);
  194. g_pd3dDevice->SetRenderState(D3DRS_LIGHTING, TRUE);
  195. g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE);
  196. // 设置投影矩阵
  197. D3DXMATRIX proj;
  198. D3DXMatrixPerspectiveFovLH(
  199. &proj,
  200. D3DX_PI * 0.25f, // 45 - degree
  201. 1,
  202. 1.0f,
  203. 100.0f);
  204. g_pd3dDevice->SetTransform(D3DTS_PROJECTION, &proj);
  206. return true;
  207. }
  209. bool DrawTextX()
  210. {
  211. //用于渲染侦FPS
  212. static int tmLastTime = GetTickCount();
  213. int tmNow = GetTickCount();
  214. //用于计算渲染FPS
  215. static int nFrameCount = 0;
  216. static int nFPS = 0;
  217. if(tmNow - tmLastTime > 1000)
  218. {
  219. //计算FPS
  220. tmLastTime = tmNow;
  221. nFPS = nFrameCount;
  222. nFrameCount = 0;
  223. }
  224. nFrameCount ++;
  226. char str[500];
  227. RECT rect;
  228. rect.left = rect.top = 10;
  229. rect.bottom = rect.top + 30;
  230. rect.right = rect.left + 260;
  231. sprintf_s(str, 500, "Current FPS:%d,  please press Q to toggle WireFrame mode", nFPS);
  232. g_pFont->DrawTextA(NULL, str, (int)strlen(str), &rect, DT_LEFT|DT_NOCLIP|DT_WORDBREAK, 0xffffff00);
  233. return true;
  234. }
  237. bool Display()
  238. {
  239. // 获取两次进入函数入口的时间间隔
  240. static float lastTime = (float)timeGetTime();
  241. float curTime  = (float)timeGetTime();
  242. float timeDelta = (curTime - lastTime)*0.001f;
  243. lastTime = curTime;
  245. // 设定视口矩阵，你可以通过按下上下左右键改变视角
  246. static float angle  = (3.0f * D3DX_PI) / 2.0f;
  247. static float height = 5.0f;
  249. if( ::GetAsyncKeyState(VK_LEFT) & 0x8000f )
  250. angle -= 0.5f * timeDelta;
  252. if( ::GetAsyncKeyState(VK_RIGHT) & 0x8000f )
  253. angle += 0.5f * timeDelta;
  255. if( ::GetAsyncKeyState(VK_UP) & 0x8000f )
  256. height += 1.5f * timeDelta;
  258. if( ::GetAsyncKeyState(VK_DOWN) & 0x8000f )
  259. height -= 1.5f * timeDelta;
  261. D3DXVECTOR3 eyept( cosf(angle) * 10.0f, height, sinf(angle) * 10.0f );
  262. D3DXVECTOR3 lookAt(0.0f, 0.0f, 0.0f);
  263. D3DXVECTOR3 up(0.0f, 1.0f, 0.0f);
  264. D3DXMATRIX view_mat;
  265. D3DXMatrixLookAtLH(&view_mat, &eyept, &lookAt, &up);
  267. g_pd3dDevice->SetTransform(D3DTS_VIEW, &view_mat);
  270. // 绘制场景
  271. g_pd3dDevice->Clear(0, 0, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0);
  272. g_pd3dDevice->BeginScene();
  274. for(DWORD i=0; i<g_numXMtrl; i++)
  275. {
  276. // 设置相关的材质和世界矩阵，然后绘制物体
  277. g_pd3dDevice->SetMaterial(&g_pMtrl[i]);
  278. g_pd3dDevice->SetTexture(0, g_ppTex[i]);
  279. g_pMesh->DrawSubset(i);
  280. }
  282. // 在屏幕上写字
  283. if(g_pFont)
  284. DrawTextX(); 
  286. g_pd3dDevice->EndScene();
  287. g_pd3dDevice->Present(0, 0, 0, 0);
  289. return true;
  290. }
  292. bool CleanUp()
  293. {
  294. SAFE_RELEASE(g_pd3dDevice);
  295. SAFE_RELEASE(g_pd3d);
  296. SAFE_RELEASE(g_pMesh);
  297. SAFE_DELETE_ARRAY(g_pMtrl);
  298. for(DWORD i=0; i<g_numXMtrl; i++)
  299. {
  300. SAFE_RELEASE(g_ppTex[i]);
  301. }
  303. return true;
  304. }
  307. int WINAPI WinMain(HINSTANCE hInstance,
  308.    HINSTANCE prevInstance, 
  309.    PSTR cmdLine,
  310.    int showCmd)
  311. {
  312. // 应用程序初始化
  313. if(!InitD3DApp(hInstance, false/*true代表窗口模式*/, 
  314. D3DDEVTYPE_HAL, &g_pd3d, &g_pd3dDevice, L"CreateMeshX"/*窗口标题*/, 1024, 768))
  315. {
  316. MessageBoxW(0, L"应用程序初始化失败", 0, 0);
  317. return 0;
  318. }
  319. // 创建字体
  320. if(!InitDXFont(g_pd3dDevice, &g_pFont, L"Times New Roman"))
  321. g_pFont = NULL;
  323. Setup();
  325. // 进入消息循环
  326. MSG msg;
  327. ZeroMemory(&msg, sizeof(msg));
  328. while(msg.message != WM_QUIT)
  329. {
  330. if(PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
  331. {
  332. TranslateMessage(&msg);
  333. DispatchMessage(&msg);
  334. }
  335. else
  336. {
  337. Display();
  338. }
  339. }
  340. CleanUp();
  341. return 0;
  342. }
  345. // 消息循环函数
  346. LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
  347. {
  348. static bool bWireFrame = false;
  349. switch( msg )
  350. {
  351. case WM_DESTROY:
  352. ::PostQuitMessage(0);
  353. break;
  355. case WM_KEYDOWN:
  356. if( wParam == VK_ESCAPE )
  357. ::DestroyWindow(hwnd);
  358. break;
  359. case WM_CHAR:
  360. if(wParam == 'q')
  361. bWireFrame = !bWireFrame;
  362. if(bWireFrame)
  363. g_pd3dDevice->SetRenderState( D3DRS_FILLMODE, D3DFILL_WIREFRAME );
  364. else
  365. g_pd3dDevice->SetRenderState( D3DRS_FILLMODE, D3DFILL_SOLID );
  366. break;
  367. }
  368. return ::DefWindowProc(hwnd, msg, wParam, lParam);
  369. }