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zfxSkinMesh.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++

zfxSkinMesh.cpp：源码内容
  1. //=============================================================================
  2. // zfxSkinMesh.cpp: 蒙皮骨骼动画模型类的实现
  3. //=============================================================================
  4. #include "zfxSkinMesh.h"
  6. //--------------------------------------------------------------------
  7. // 构造函数和析构函数  Construction/Destruction
  8. //--------------------------------------------------------------------
  9. CZFXSkinMesh::CZFXSkinMesh()
  10. {
  11. m_bPlayAnim          = true;
  12. m_pd3dDevice         = NULL;
  13.     m_pAnimController    = NULL;
  14.     m_pFrameRoot         = NULL;
  16. m_pAlloc = new CAllocateHierarchy();
  17. }
  20. //-----------------------------------------------------------------------------
  21. // 构造函数和析构函数 
  22. //-----------------------------------------------------------------------------
  23. CZFXSkinMesh::~CZFXSkinMesh()
  24. {
  26. }
  29. //-----------------------------------------------------------------------------
  30. // 创建并加载蒙皮网格模型
  31. //-----------------------------------------------------------------------------
  32. HRESULT CZFXSkinMesh::OnCreate(LPDIRECT3DDEVICE9 pD3DDevice, WCHAR *strFileName)
  33. {
  34. HRESULT hr;
  35. m_pd3dDevice = pD3DDevice;
  36. hr = LoadFromXFile(strFileName);
  37. if(FAILED(hr))
  38. return hr;
  39. return S_OK;
  40. }
  43. //-----------------------------------------------------------------------------
  44. // 从文件加载蒙皮网格模型
  45. //-----------------------------------------------------------------------------
  46. HRESULT CZFXSkinMesh::LoadFromXFile(WCHAR *strFileName)
  47. {
  48.     HRESULT hr;
  50. //从.X文件加载层次框架和动画数据
  51.     hr = D3DXLoadMeshHierarchyFromX(strFileName, D3DXMESH_MANAGED, m_pd3dDevice, 
  52.                             m_pAlloc, NULL, &m_pFrameRoot, &m_pAnimController);
  53. if(FAILED(hr))
  54.         return hr;
  56. //建立各级框架的组合变换矩阵
  57.     hr = SetupBoneMatrixPointers(m_pFrameRoot);  
  58. if(FAILED(hr))
  59.         return hr;
  61. //计算框架对象的边界球
  62.     hr = D3DXFrameCalculateBoundingSphere(m_pFrameRoot, &m_vObjectCenter, &m_fObjectRadius);
  63. if(FAILED(hr))
  64.         return hr;
  66. return S_OK;
  67. }
  70. //--------------------------------------------------------------------------
  71. // 仅在LoadFromXFile中调用。调用子函数SetupBoneMatrixPointersOnMesh()
  72. // 安置好各级框架(实际上是各个骨骼)的组合变换矩阵。
  73. // 注意: 在这里其实并没有计算出各个骨骼的组合变换矩阵，只是为每个矩阵开辟了相应
  74. // 的存储空间，真正的计算是在函数CSkinMesh::UpdateFrameMatrices()中完成的。
  75. //---------------------------------------------------------------------------
  76. HRESULT CZFXSkinMesh::SetupBoneMatrixPointers(LPD3DXFRAME pFrame)
  77. {
  78.     HRESULT hr;
  80.     if (pFrame->pMeshContainer != NULL)
  81.     {
  82.         hr = SetupBoneMatrixPointersOnMesh(pFrame->pMeshContainer);  //调用子函数
  83.         if (FAILED(hr))
  84.             return hr;
  85.     }
  87.     if (pFrame->pFrameSibling != NULL)
  88.     {
  89.         hr = SetupBoneMatrixPointers(pFrame->pFrameSibling);   //递归
  90.         if (FAILED(hr))
  91.             return hr;
  92.     }
  94.     if (pFrame->pFrameFirstChild != NULL)
  95.     {
  96.         hr = SetupBoneMatrixPointers(pFrame->pFrameFirstChild);  //递归
  97.         if (FAILED(hr))
  98.             return hr;
  99.     }
  101.     return S_OK;
  102. }
  105. //-----------------------------------------------------------------------------
  106. // 仅在SetupBoneMatrixPointers()中被调用，设置每个骨骼的组合变换矩阵
  107. //-----------------------------------------------------------------------------
  108. HRESULT CZFXSkinMesh::SetupBoneMatrixPointersOnMesh(LPD3DXMESHCONTAINER pMeshContainerBase)
  109. {
  110.     UINT iBone, cBones;  // cBones表示骨骼数量，iBone表示循环变量
  111.     D3DXFRAME_DERIVED *pFrame;
  113. //先强制转为扩展型
  114.     D3DXMESHCONTAINER_DERIVED *pMeshContainer = (D3DXMESHCONTAINER_DERIVED*)pMeshContainerBase;
  116.     // 只有蒙皮网格模型才有骨骼矩阵
  117.     if (pMeshContainer->pSkinInfo != NULL)
  118.     {
  119. //得到骨骼数量
  120.         cBones = pMeshContainer->pSkinInfo->GetNumBones();
  122. //申请存储骨骼矩阵的空间
  123.         pMeshContainer->ppBoneMatrixPtrs = new D3DXMATRIX*[cBones];     
  124. if (pMeshContainer->ppBoneMatrixPtrs == NULL)
  125.             return E_OUTOFMEMORY;
  127.         for (iBone = 0; iBone < cBones; iBone++)
  128.         {
  129. //找到框架
  130.             pFrame = (D3DXFRAME_DERIVED*)D3DXFrameFind(m_pFrameRoot, pMeshContainer->pSkinInfo->GetBoneName(iBone));
  131.             if (pFrame == NULL)
  132.                 return E_FAIL;
  134. //将框架的组合变换矩阵赋值给对应的骨骼的复合变换矩阵
  135.             pMeshContainer->ppBoneMatrixPtrs[iBone] = &pFrame->CombinedTransformationMatrix;
  136. }
  137.     }
  139.     return S_OK;
  140. }
  143. //-----------------------------------------------------------------------------
  144. // 更新框架并绘制框架
  145. // (1)用m_pAnimController->AdvanceTime()设置时间，m_pAnimController是
  146. //    类LPD3DXANIMATIONCONTROLLER的一个对象
  147. // (2)用函数CSkinMesh::UpdateFrameMatrices()更新框架
  148. // (3)用函数CSkinMesh::DrawFrame()绘制框架
  149. //-----------------------------------------------------------------------------
  150. HRESULT CZFXSkinMesh::Render(D3DXMATRIX* matWorld, float fElapsedAppTime)
  151. {
  152.     if( 0.0f == fElapsedAppTime ) 
  153.         return S_OK;
  155. if (m_bPlayAnim && m_pAnimController != NULL)
  156. m_pAnimController->AdvanceTime( fElapsedAppTime, NULL );
  158. UpdateFrameMatrices(m_pFrameRoot, matWorld);  //调用子函数
  159. DrawFrame(m_pFrameRoot);  //调用子函数
  161. return S_OK;
  162. }
  165. //-----------------------------------------------------------------------------
  166. // 计算各个骨骼的组合变换矩阵
  167. //-----------------------------------------------------------------------------
  168. void CZFXSkinMesh::UpdateFrameMatrices(LPD3DXFRAME pFrameBase, LPD3DXMATRIX pParentMatrix)
  169. {
  170.     D3DXFRAME_DERIVED *pFrame = (D3DXFRAME_DERIVED*)pFrameBase;
  172.     if (pParentMatrix != NULL)
  173.         D3DXMatrixMultiply(&pFrame->CombinedTransformationMatrix, &pFrame->TransformationMatrix, pParentMatrix);
  174.     else
  175.         pFrame->CombinedTransformationMatrix = pFrame->TransformationMatrix;
  177.     if (pFrame->pFrameSibling != NULL)
  178.     {
  179.         UpdateFrameMatrices(pFrame->pFrameSibling, pParentMatrix);
  180.     }
  182.     if (pFrame->pFrameFirstChild != NULL)
  183.     {
  184.         UpdateFrameMatrices(pFrame->pFrameFirstChild, &pFrame->CombinedTransformationMatrix);
  185.     }
  186. }
  189. //-----------------------------------------------------------------------------
  190. // 绘制框架.
  191. // 先用CSkinMesh::DrawMeshContainer()绘制一个LPD3DXMESHCONTAINER类型
  192. // 的变量pMeshContainer.然后递归绘制同一级框架和子一级框架。
  193. //-----------------------------------------------------------------------------
  194. void CZFXSkinMesh::DrawFrame(LPD3DXFRAME pFrame)
  195. {
  196.     LPD3DXMESHCONTAINER pMeshContainer;
  198.     pMeshContainer = pFrame->pMeshContainer;
  199.     while (pMeshContainer != NULL)
  200.     {
  201.         DrawMeshContainer(pMeshContainer, pFrame); //调用子函数
  202.         pMeshContainer = pMeshContainer->pNextMeshContainer;
  203.     }
  205.     if (pFrame->pFrameSibling != NULL)
  206.     {
  207.         DrawFrame(pFrame->pFrameSibling);
  208.     }
  210.     if (pFrame->pFrameFirstChild != NULL)
  211.     {
  212.         DrawFrame(pFrame->pFrameFirstChild);
  213.     }
  214. }
  217. //-----------------------------------------------------------------------------
  218. // DrawMeshContainer()
  219. // Called to render a mesh in the hierarchy
  220. //-----------------------------------------------------------------------------
  221. void CZFXSkinMesh::DrawMeshContainer(LPD3DXMESHCONTAINER pMeshContainerBase, LPD3DXFRAME pFrameBase)
  222. {
  223. D3DXMESHCONTAINER_DERIVED *pMeshContainer = (D3DXMESHCONTAINER_DERIVED*)pMeshContainerBase;
  224. D3DXFRAME_DERIVED *pFrame = (D3DXFRAME_DERIVED*)pFrameBase;
  225. UINT iMaterial;
  226. UINT iAttrib;
  227. LPD3DXBONECOMBINATION pBoneComb;
  229. UINT iMatrixIndex;
  230. UINT iPaletteEntry;
  231. D3DXMATRIXA16 matTemp;
  233. if (pMeshContainer->pSkinInfo != NULL) //如果是蒙皮网格
  234. {
  235. //检查是否使用软件顶点混合
  236. //如果当前硬件不支持, 则使用软件顶点处理
  237. if (pMeshContainer->UseSoftwareVP)
  238. m_pd3dDevice->SetSoftwareVertexProcessing(true);
  240. //启用索引顶点混合
  241. if (pMeshContainer->NumInfl)
  242. m_pd3dDevice->SetRenderState(D3DRS_INDEXEDVERTEXBLENDENABLE, true);
  244. //根据影响当前网格模型顶点的骨骼数量, 设置需要使用的混合矩阵索引数量
  245. if (pMeshContainer->NumInfl == 1)
  246. m_pd3dDevice->SetRenderState(D3DRS_VERTEXBLEND, D3DVBF_0WEIGHTS);
  247. else if(pMeshContainer->NumInfl == 2)
  248. m_pd3dDevice->SetRenderState(D3DRS_VERTEXBLEND, D3DVBF_1WEIGHTS);
  249. else if(pMeshContainer->NumInfl == 3)
  250. m_pd3dDevice->SetRenderState(D3DRS_VERTEXBLEND, D3DVBF_2WEIGHTS);
  251. else
  252. m_pd3dDevice->SetRenderState(D3DRS_VERTEXBLEND, D3DVBF_3WEIGHTS);
  254. //逐个子网格渲染进行渲染
  255. pBoneComb = reinterpret_cast<LPD3DXBONECOMBINATION>(pMeshContainer->pBoneCombinationBuf->GetBufferPointer());
  256. for (iAttrib = 0; iAttrib < pMeshContainer->NumAttributeGroups; iAttrib++)
  257. {
  258. //设置混合矩阵
  259. for (iPaletteEntry = 0; iPaletteEntry < pMeshContainer->NumPaletteEntries; ++iPaletteEntry)
  260. {
  261. iMatrixIndex = pBoneComb[iAttrib].BoneId[iPaletteEntry];
  262. if (iMatrixIndex != UINT_MAX)
  263. {
  264. D3DXMatrixMultiply( &matTemp, &pMeshContainer->pBoneOffsetMatrices[iMatrixIndex], 
  265.                  pMeshContainer->ppBoneMatrixPtrs[iMatrixIndex] );
  266. m_pd3dDevice->SetTransform( D3DTS_WORLDMATRIX( iPaletteEntry ), &matTemp );
  267. }
  268. }
  270. //设置材质和纹理
  271. m_pd3dDevice->SetMaterial( &pMeshContainer->pMaterials[pBoneComb[iAttrib].AttribId].MatD3D );
  272. m_pd3dDevice->SetTexture( 0, pMeshContainer->ppTextures[pBoneComb[iAttrib].AttribId] );
  274. //渲染子网格模型
  275. pMeshContainer->MeshData.pMesh->DrawSubset( iAttrib );
  276. }
  278. //恢复顶点混合状态
  279. m_pd3dDevice->SetRenderState(D3DRS_INDEXEDVERTEXBLENDENABLE, FALSE);
  280. m_pd3dDevice->SetRenderState(D3DRS_VERTEXBLEND, D3DVBF_DISABLE);
  282. //恢复顶点处理模式
  283. if (pMeshContainer->UseSoftwareVP)
  284. m_pd3dDevice->SetSoftwareVertexProcessing(false);
  285. } 
  286. else  // 如果只是普通网格，在添加材质后就绘制它。
  287. {
  288. m_pd3dDevice->SetTransform(D3DTS_WORLD, &pFrame->CombinedTransformationMatrix);
  289. for (iMaterial = 0; iMaterial < pMeshContainer->NumMaterials; iMaterial++)
  290. {
  291. m_pd3dDevice->SetMaterial( &pMeshContainer->pMaterials[iMaterial].MatD3D );
  292. m_pd3dDevice->SetTexture( 0, pMeshContainer->ppTextures[iMaterial] );
  293. pMeshContainer->MeshData.pMesh->DrawSubset(iMaterial);
  294. }
  295. }
  296. }
  299. //-----------------------------------------------------------------------------
  300. // 释放蒙皮网格模型
  301. //-----------------------------------------------------------------------------
  302. HRESULT CZFXSkinMesh::OnDestory()
  303. {
  304. D3DXFrameDestroy(m_pFrameRoot, m_pAlloc);
  305.     SAFE_RELEASE(m_pAnimController);
  306. delete m_pAlloc;
  308. return S_OK;
  309. }