Category

Development Platform
Home > E-Books > Other Books > View Code
Mesh.cpp
Package: directx8中文教程.zip　[view]
Upload User: whgydz
Upload Date: 2007-01-12
Package Size: 2259k
Code Size: 3k
Category:

Other Books

Development Platform:

HTML/CSS

Mesh.cpp：Code Content
  1. // Mesh.cpp: implementation of the CMesh class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #include "Mesh.h"
  7. //////////////////////////////////////////////////////////////////////
  8. // Construction/Destruction
  9. //////////////////////////////////////////////////////////////////////
  11. CMesh::CMesh(LPDIRECT3DDEVICE8 pD3DDevice, LPSTR pFilename)
  12. {
  13. LPD3DXBUFFER pMaterialsBuffer = NULL;
  14. LPD3DXMESH pMesh = NULL;
  16. m_pD3DDevice = pD3DDevice;
  18. if(FAILED(D3DXLoadMeshFromX(pFilename, D3DXMESH_SYSTEMMEM, m_pD3DDevice, NULL, 
  19.                                 &pMaterialsBuffer, &m_dwNumMaterials, &pMesh)))
  20. {
  21. m_pMesh = NULL;
  22. m_pMeshMaterials = NULL;
  23. m_pMeshTextures = NULL;
  25. LogError("<li>Mesh '%s' failed to load", pFilename);
  26. return;
  27. }
  29.     D3DXMATERIAL* matMaterials = (D3DXMATERIAL*)pMaterialsBuffer->GetBufferPointer();
  30.     
  31. //Create two arrays. One to hold the materials and only to hold the textures
  32. m_pMeshMaterials = new D3DMATERIAL8[m_dwNumMaterials];
  33.     m_pMeshTextures  = new LPDIRECT3DTEXTURE8[m_dwNumMaterials];
  35.     for(DWORD i = 0; i < m_dwNumMaterials; i++)
  36.     {
  37.         // Copy the material
  38.         m_pMeshMaterials[i] = matMaterials[i].MatD3D;
  40.         // Set the ambient color for the material (D3DX does not do this)
  41. m_pMeshMaterials[i].Ambient = m_pMeshMaterials[i].Diffuse;
  43. // Create the texture
  44.         if(FAILED(D3DXCreateTextureFromFile(m_pD3DDevice, 
  45.                                             matMaterials[i].pTextureFilename, 
  46.                                             &m_pMeshTextures[i])))
  47.         {
  48.             m_pMeshTextures[i] = NULL;
  49.         }
  50.     }
  52.     //We've finished with the material buffer, so release it
  53.     SafeRelease(pMaterialsBuffer);
  56. //Make sure that the normals are setup for our mesh
  57. pMesh->CloneMeshFVF(D3DXMESH_MANAGED, MESH_D3DFVF_CUSTOMVERTEX, m_pD3DDevice, &m_pMesh);
  58. SafeRelease(pMesh);
  60. D3DXComputeNormals(m_pMesh);
  63. LogInfo("<li>Mesh '%s' loaded OK", pFilename);
  64. }
  66. CMesh::~CMesh()
  67. {
  68. SafeDelete(m_pMeshMaterials);
  70. if(m_pMeshTextures != NULL)
  71. {
  72. for(DWORD i = 0; i < m_dwNumMaterials; i++)
  73. {
  74. if(m_pMeshTextures[i])
  75. {
  76. SafeRelease(m_pMeshTextures[i]);
  77. }
  78. }
  79. }
  81. SafeDelete(m_pMeshTextures);
  82. SafeRelease(m_pMesh);
  83.     
  84. LogInfo("<li>Mesh destroyed OK");
  85. }
  87. DWORD CMesh::Render()
  88. {
  89. if(m_pMesh != NULL)
  90. {
  91. for(DWORD i = 0; i < m_dwNumMaterials; i++)
  92. {
  93. m_pD3DDevice->SetMaterial(&m_pMeshMaterials[i]);
  94. m_pD3DDevice->SetTexture(0, m_pMeshTextures[i]);
  95.         
  96. m_pMesh->DrawSubset(i);
  97. }
  99. return m_pMesh->GetNumFaces();
  100. }
  101. else
  102. {
  103. return 0;
  104. }
  105. }