obj模型显示示例

#include "Obj.h"            #include #include #include #pragma warning( disable : 4996 ) // disable deprecated warning  #include #pragma warning( default : 4996 ) #include   struct VERTEX { D3DXVECTOR3 pos; D3DXVECTOR3 normal; D3DXVECTOR2 uv; static const DWORD    FVF=D3DFVF_XYZ|D3DFVF_NORMAL|D3DFVF_TEX1; }; //----------------------------------------------------------------------------- // Global variables //----------------------------------------------------------------------------- LPDIRECT3D9             g_pD3D           = NULL; // Used to create the D3DDevice LPDIRECT3DDEVICE9       g_pd3dDevice     = NULL; // Our rendering device LPD3DXMESH              g_pMesh          = NULL; // Our mesh object in sysmem D3DMATERIAL9*           g_pMeshMaterials = NULL; // Materials for our mesh LPDIRECT3DTEXTURE9*     g_pMeshTextures = NULL; // Textures for our mesh DWORD                   g_dwNumMaterials = 0L;   // Number of mesh materials LPDIRECT3DVERTEXBUFFER9  *g_pSubBuffer    =NULL;           //group for each sub LPDIRECT3DINDEXBUFFER9 *g_pIndexBuffer =NULL; int*                     g_pNumVerts     =NULL; int*                     g_pNumFaces     =NULL; //----------------------------------------------------------------------------- // Name: InitD3D() // Desc: Initializes Direct3D //----------------------------------------------------------------------------- HRESULT InitD3D( HWND hWnd ) { // Create the D3D object. if( NULL == ( g_pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )    return E_FAIL; // Set up the structure used to create the D3DDevice. Since we are now // using more complex geometry, we will create a device with a zbuffer. D3DPRESENT_PARAMETERS d3dpp;  ZeroMemory( &d3dpp, sizeof(d3dpp) ); d3dpp.Windowed = TRUE; d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD; d3dpp.BackBufferFormat = D3DFMT_UNKNOWN; d3dpp.EnableAutoDepthStencil = TRUE; d3dpp.AutoDepthStencilFormat = D3DFMT_D16; // Create the D3DDevice if( FAILED( g_pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd,    D3DCREATE_SOFTWARE_VERTEXPROCESSING,    &d3dpp, &g_pd3dDevice ) ) ) {    return E_FAIL; } g_pd3dDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW); // Turn on the zbuffer g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, TRUE ); // Turn on ambient lighting  g_pd3dDevice->SetRenderState( D3DRS_AMBIENT, 0xffffffff ); return S_OK; } //typedef   struct   _browseinfo   {      // HWND   hwndOwner;  // LPCITEMIDLIST   pidlRoot;      // LPSTR   pszDisplayName;      // LPCSTR   lpszTitle;      // UINT   ulFlags;      // BFFCALLBACK   lpfn;      // LPARAM   lParam;      // int   iImage;      //}   BROWSEINFO,   *PBROWSEINFO,   *LPBROWSEINFO; //void find(char * lpPath) //{ // char szFind[MAX_PATH]; // WIN32_FIND_DATA FindFileData; // // strcpy(szFind,lpPath); // strcat(szFind,"//*.*"); // // HANDLE hFind=::FindFirstFile(szFind,&FindFileData); // if(INVALID_HANDLE_VALUE == hFind)    return; // // while(TRUE) // { //   if(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) //   { //    if(FindFileData.cFileName[0]!='.') //    { //     strcpy(szFind,lpPath); //     strcat(szFind,"//"); //     strcat(szFind,FindFileData.cFileName); //     find(szFind); //    } //   } //   else //   { //    cout << FindFileData.cFileName; //   } //   if(!FindNextFile(hFind,&FindFileData))    break; // } // FindClose(hFind); //} void getNamePath(char* path) { ITEMIDLIST   *ppidl;    SHGetSpecialFolderLocation(NULL,   CSIDL_DESKTOP   ,&ppidl);    if   (   ppidl   ==   NULL)    {       AfxMessageBox("启动路径浏览失败");      }   BROWSEINFO   *bi=new   BROWSEINFO;    bi->hwndOwner=NULL;    bi->pidlRoot=ppidl;        bi->pszDisplayName=NULL;              bi->lpszTitle = "输入文件路径及名称(OBJ)";              bi->lpfn=NULL;    bi->ulFlags=/*BIF_BROWSEINCLUDEFILES|*/BIF_EDITBOX |BIF_RETURNONLYFSDIRS;    ppidl   =   SHBrowseForFolder(bi);      SHGetPathFromIDList(ppidl,path);    delete   bi; } //char*   GetNamePath() //{ // BROWSEINFO   bi;    // char   buffer[MAX_PATH];    // ZeroMemory(buffer,   MAX_PATH);    // bi.hwndOwner = NULL;    // bi.pidlRoot   =   NULL;    // bi.pszDisplayName   =   buffer;    // // bi.lpszTitle   =   "选择一个文件夹";    // bi.ulFlags   =   BIF_EDITBOX;    // bi.lpfn   =   NULL;    // bi.lParam   =   0;    // bi.iImage   =   0;    // // LPITEMIDLIST   pList   =   NULL;    // if   ((pList   =   SHBrowseForFolder(&bi))   !=   NULL)    // {    //   char   path[MAX_PATH];    //   ZeroMemory(path,   MAX_PATH);    //   SHGetPathFromIDList(pList,   path);    //   //path就是選中的目錄    // } //}; /// //----------------------------------------------------------------------------- // Name: InitGeometry() // Desc: Load the mesh and build the material and texture arrays //----------------------------------------------------------------------------- HRESULT InitGeometry() { t3DModel temp={0}; // Load the mesh from the specified file CLoadObj loader; char str[128] = ""; getNamePath(str); //GetPrivateProfileString("PATH", "name", "hua.3ds", str, 64, "cofig.dat"); //   loader.Import3DS(&temp, str); loader.ImportObj(&temp, str); char strTex[128]; strncpy_s(strTex, str, strlen(str)-4); sprintf(strTex, "%s_tex.png", strTex); g_dwNumMaterials=temp.numOfObjects; // We need to extract the material properties and texture names from the  // pD3DXMtrlBuffer g_pMeshMaterials = new D3DMATERIAL9[g_dwNumMaterials]; g_pMeshTextures = new LPDIRECT3DTEXTURE9[g_dwNumMaterials]; g_pSubBuffer     = new LPDIRECT3DVERTEXBUFFER9[g_dwNumMaterials]; g_pIndexBuffer   = new LPDIRECT3DINDEXBUFFER9[g_dwNumMaterials]; g_pNumVerts      = new int[g_dwNumMaterials];  g_pNumFaces      = new int[g_dwNumMaterials]; DWORD i; for( i=0; i{    int id=0;    id=temp.pObject[i].materialID;    // Copy the material    D3DCOLORVALUE set={0.7,0.5,0.8,1};    g_pMeshMaterials[i].Ambient=set;    g_pMeshMaterials[i].Diffuse=set;    g_pMeshMaterials[i].Specular=set;    g_pMeshMaterials[i].Emissive.b=g_pMeshMaterials[i].Emissive.r=g_pMeshMaterials[i].Emissive.g=0;    g_pMeshMaterials[i].Emissive.a=1;    g_pMeshMaterials[i].Power=1;    //if(id>-1)    //{    // g_pMeshMaterials[i].Diffuse.r=temp.pMaterials[id].color[0]/255.0f;    // g_pMeshMaterials[i].Diffuse.g=temp.pMaterials[id].color[1]/255.0f;    // g_pMeshMaterials[i].Diffuse.b=temp.pMaterials[id].color[2]/255.0f;    // g_pMeshMaterials[i].Ambient=g_pMeshMaterials[i].Diffuse;    //}    if( !temp.pObject[i].bHasTexture )    {     // Create the texture     // If texture is not in current folder, try parent folder     if( FAILED( D3DXCreateTextureFromFile( g_pd3dDevice,       strTex,       &g_pMeshTextures[i] ) ) )     {      g_pMeshTextures[i] = NULL;     }    }    else if(temp.pObject[i].bHasTexture && strlen(temp.pMaterials[id].strFile)>0)    {     // Create the texture     // If texture is not in current folder, try parent folder     if( FAILED( D3DXCreateTextureFromFile( g_pd3dDevice,       temp.pMaterials[id].strFile,       &g_pMeshTextures[i] ) ) )     {      MessageBox(NULL, "Could not find texture map", "Meshes.exe", MB_OK);     }    }    g_pNumVerts[i]=temp.pObject[i].numOfVerts;    g_pNumFaces[i]=temp.pObject[i].numOfFaces;    //fill sub buffer    if( FAILED(g_pd3dDevice->CreateVertexBuffer(sizeof(VERTEX)*g_pNumVerts[i],D3DUSAGE_WRITEONLY,VERTEX::FVF,     D3DPOOL_DEFAULT,&g_pSubBuffer[i],NULL)))     return E_FAIL;    //为了方便暂时使用 inde32 格式 可以自己来优化    if( FAILED(g_pd3dDevice->CreateIndexBuffer(sizeof(DWORD)*g_pNumFaces[i]*3,     D3DUSAGE_WRITEONLY,D3DFMT_INDEX32,D3DPOOL_DEFAULT,&g_pIndexBuffer[i],NULL)))     return E_FAIL;    VERTEX* pverts;    int j;    g_pSubBuffer[i]->Lock(0,0,(void**)&pverts,0);    for(j=0;j   {     pverts[j].pos.x=temp.pObject[i].pVerts[j].x;     pverts[j].pos.y=temp.pObject[i].pVerts[j].y;     pverts[j].pos.z=-temp.pObject[i].pVerts[j].z;     if(temp.pObject[i].pNormals!=NULL)     {      pverts[j].normal.x=temp.pObject[i].pNormals[j].x;      pverts[j].normal.y=temp.pObject[i].pNormals[j].y;      pverts[j].normal.z=-temp.pObject[i].pNormals[j].z;     }     else     {      pverts[j].normal.x=0;      pverts[j].normal.y=1;      pverts[j].normal.z=0;     }     if(temp.pObject[i].pTexVerts!=NULL)     {      pverts[j].uv.x=temp.pObject[i].pTexVerts[j].x;      pverts[j].uv.y=temp.pObject[i].pTexVerts[j].y;     }     else     {      pverts[j].uv.x=0;      pverts[j].uv.y=0;     }    }    g_pSubBuffer[i]->Unlock();    DWORD *index;    g_pIndexBuffer[i]->Lock(0,0,(void**)&index,0);    for(j=0;j   {     index[j*3]=temp.pObject[i].pFaces[j].vertIndex[0];     index[j*3+1]=temp.pObject[i].pFaces[j].vertIndex[1];     index[j*3+2]=temp.pObject[i].pFaces[j].vertIndex[2];    }    g_pIndexBuffer[i]->Unlock(); } return S_OK; }   //----------------------------------------------------------------------------- // Name: Cleanup() // Desc: Releases all previously initialized objects //----------------------------------------------------------------------------- VOID Cleanup() { if( g_pMeshMaterials != NULL )     delete[] g_pMeshMaterials; DWORD i; if( g_pMeshTextures ) {    for(i = 0; i < g_dwNumMaterials; i++ )    {     if( g_pMeshTextures[i] )      g_pMeshTextures[i]->Release();    }    delete[] g_pMeshTextures; } if(g_pSubBuffer) {    for( i= 0; i < g_dwNumMaterials; i++ )    {     if(g_pSubBuffer[i])      g_pSubBuffer[i]->Release();    }    delete[] g_pSubBuffer;  } if(g_pIndexBuffer) {    for( i= 0; i < g_dwNumMaterials; i++ )    {     if(g_pIndexBuffer[i])      g_pIndexBuffer[i]->Release();    }    delete[] g_pIndexBuffer;  } if(g_pNumVerts)    delete []g_pNumVerts; if(g_pNumFaces)    delete []g_pNumFaces; if( g_pMesh != NULL )    g_pMesh->Release(); if( g_pd3dDevice != NULL )    g_pd3dDevice->Release(); if( g_pD3D != NULL )    g_pD3D->Release(); }   //----------------------------------------------------------------------------- // Name: SetupMatrices() // Desc: Sets up the world, view, and projection transform matrices. //----------------------------------------------------------------------------- VOID SetupMatrices() { // Set up world matrix D3DXMATRIXA16 matWorld; D3DXMatrixRotationY( &matWorld, timeGetTime()/1000.0f ); g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld ); // Set up our view matrix. A view matrix can be defined given an eye point, // a point to lookat, and a direction for which way is up. Here, we set the // eye five units back along the z-axis and up three units, look at the  // origin, and define "up" to be in the y-direction. D3DXVECTOR3 vEyePt( 0.0f, 3.0f,-3.0f ); D3DXVECTOR3 vLookatPt( 0.0f, 0.0f, 0.0f ); D3DXVECTOR3 vUpVec( 0.0f, 1.0f, 0.0f ); D3DXMATRIXA16 matView; D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec ); g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView ); // For the projection matrix, we set up a perspective transform (which // transforms geometry from 3D view space to 2D viewport space, with // a perspective divide making objects smaller in the distance). To build // a perpsective transform, we need the field of view (1/4 pi is common), // the aspect ratio, and the near and far clipping planes (which define at // what distances geometry should be no longer be rendered). D3DXMATRIXA16 matProj; D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 600.0f ); g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj ); }   //----------------------------------------------------------------------------- // Name: Render() // Desc: Draws the scene //----------------------------------------------------------------------------- VOID Render() { // Clear the backbuffer and the zbuffer g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER,     D3DCOLOR_XRGB(0,0,0), 1.0f, 0 ); // Begin the scene if( SUCCEEDED( g_pd3dDevice->BeginScene() ) ) {    // Setup the world, view, and projection matrices    SetupMatrices();    // Meshes are divided into subsets, one for each material. Render them in    // a loop    for( DWORD i=0; i   {     // Set the material and texture for this subset     g_pd3dDevice->SetMaterial( &g_pMeshMaterials[i] );     g_pd3dDevice->SetTexture( 0, g_pMeshTextures[i] );     // Draw the mesh subset     g_pd3dDevice->SetStreamSource(0,g_pSubBuffer[i],0,sizeof(VERTEX));     g_pd3dDevice->SetFVF(VERTEX::FVF);     g_pd3dDevice->SetIndices(g_pIndexBuffer[i]);     g_pd3dDevice->DrawIndexedPrimitive(D3DPT_TRIANGLELIST,0,0,g_pNumVerts[i],0,g_pNumFaces[i]);    }    // End the scene    g_pd3dDevice->EndScene(); } // Present the backbuffer contents to the display g_pd3dDevice->Present( NULL, NULL, NULL, NULL ); }   //----------------------------------------------------------------------------- // Name: MsgProc() // Desc: The window's message handler //----------------------------------------------------------------------------- LRESULT WINAPI MsgProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam ) { switch( msg ) { case WM_DESTROY:    Cleanup();    PostQuitMessage( 0 );    return 0; } return DefWindowProc( hWnd, msg, wParam, lParam ); }   //----------------------------------------------------------------------------- // Name: WinMain() // Desc: The application's entry point //----------------------------------------------------------------------------- INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT ) { // Register the window class WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_CLASSDC, MsgProc, 0L, 0L,     GetModuleHandle(NULL), NULL, NULL, NULL, NULL,    "D3D Tutorial", NULL }; RegisterClassEx( &wc ); // Create the application's window HWND hWnd = CreateWindow( "D3D Tutorial", "D3D Tutorial 3ds Rendering",     WS_OVERLAPPEDWINDOW, 100, 100, 600, 500,    NULL, NULL, wc.hInstance, NULL ); // Initialize Direct3D if( SUCCEEDED( InitD3D( hWnd ) ) ) {     // Create the scene geometry    if( SUCCEEDED( InitGeometry() ) )    {     // Show the window     ShowWindow( hWnd, SW_SHOWDEFAULT );     UpdateWindow( hWnd );     // Enter the message loop     MSG msg;      ZeroMemory( &msg, sizeof(msg) );     while( msg.message!=WM_QUIT )     {      if( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) )      {       TranslateMessage( &msg );       DispatchMessage( &msg );      }      else       Render();     }    } } UnregisterClass( "D3D Tutorial", wc.hInstance ); return 0; }