3ogllu_3ds_mod.rar_3ds mod_MOD

//------------------------------------------------------------------------------ // Name: oglu_3ds_model_loading.cpp // Author: Anudhyan Boral // Last Modified: 02/27/06 // Description: This sample loads and displays a 3ds model // // Control Keys: F1 - Toggles wire frame mode // // Note: The 3ds object "box.3ds" is loaded in init(); // This sample has been coded on top of "ogl_initialization" // This sample uses the stone texture from "ogl_dot3_bump_mapping" // In order to load the 3ds object properly, all geometry should be // attached together. Many other chunks have to be inserted into // Load3dsObject() in order to load data such as lights,vertex colors // multiple objects,material info etc.This code has been tested on // 3ds objects from 3dsMax 4,6 and 7... //------------------------------------------------------------------------------ #define STRICT #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <iostream> #include <GL/gl.h> #include <GL/glu.h> #include <GL/glaux.h> #include "resource.h" #include <io.h> //----------------------------------------------------------------------------- // CLASSES //----------------------------------------------------------------------------- //Basic Classes: //Required for representing the loaded model class vertex{ public: float x,y,z; }; //MapCoord - for storing texture mapping coords class mapcoord{ public: float u,v; }; //The three ints for the polygon //represent the no.s(or rank) of it's 3 vertices class polygon{ public: int a,b,c; }; //Our object consists of a name,the vertex and polygons quantity, //3000 vertices,3000 polygons, and 3000 mapping coords //The value 3000 should be increased in order to load high-res models. class object{ public: char name[20]; int numVerts,numPolys; vertex v[3000]; polygon p[3000]; mapcoord m[3000]; }; //----------------------------------------------------------------------------- // GLOBALS //----------------------------------------------------------------------------- HWND g_hWnd = NULL; HDC g_hDC = NULL; HGLRC g_hRC = NULL; float g_fSpinX = 0.0f; float g_fSpinY = 0.0f; bool g_bRenderInWireFrame = false; unsigned int g_textureID = 1; object g_Obj3ds; //our object //----------------------------------------------------------------------------- // PROTOTYPES //----------------------------------------------------------------------------- int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow); LRESULT CALLBACK WindowProc(HWND g_hWnd, UINT msg, WPARAM wParam, LPARAM lParam); void init(void); void render(void); void shutDown(void); void Load3dsObject(object *, char *); void DrawObject(object *); //----------------------------------------------------------------------------- // Name: Load3dsObject (object *, char *) // Desc: Loads a 3ds object given a filename //----------------------------------------------------------------------------- void Load3dsObject (object *obj, char *filename) { FILE *file; //Our file pointer char temp; //Temporary char for reading name of object short chunkID; //Stores ID of current chunk. int chunkLength; short useless; //Open our file for reading(r) and in binary mode(b)- "rb" file=fopen (filename, "rb"); int i; //While current position is lesser than the total length while (ftell(file) < filelength (fileno (file))) { fread (&chunkID, 2, 1, file); fread (&chunkLength, 4, 1,file); switch (chunkID) { case 0x4d4d: //Skip these chunks break; case 0x3d3d: break; case 0x4000: //Chunk containing name for(i=0;i<20;i++) { fread (&temp, 1, 1, file); obj->name[i]=temp; if(temp == '\0')break; } break; case 0x3f80: //Skip again break; case 0x4100: break; case 0x4110: //Chunk with num of vertices //followed by their coordinates fread (&obj->numVerts, sizeof (unsigned short), 1, file); for (i=0; i<obj->numVerts; i++) { fread (&obj->v[i].x, sizeof(float), 1, file); fread (&obj->v[i].y, sizeof(float), 1, file); fread (&obj->v[i].z, sizeof(float), 1, file); } break; case 0x4120: //Chunk with numPolys and //the indices fread (&obj->numPolys, sizeof (unsigned short), 1, file); for (i=0; i<obj->numPolys; i++) { fread (&obj->p[i].a, sizeof (unsigned short), 1, file); fread (&obj->p[i].b, sizeof (unsigned short), 1, file); fread (&obj->p[i].c, sizeof (unsigned short), 1, file); fread (&useless, sizeof (unsigned short), 1, file); } break; case 0x4140: //Chunk with texture coords fread (&useless, sizeof (unsigned short), 1, file); for (i=0; i<obj->numVerts; i++) { fread (&obj->m[i].u, sizeof (float), 1, file); fread (&obj->m[i].v, sizeof (float), 1, file); } break; default: fseek(file,chunkLength-6, SEEK_CUR); } } fclose (file); } //----------------------------------------------------------------------------- // Name: WinMain() // Desc: The application's entry point //----------------------------------------------------------------------------- int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow ) { WNDCLASSEX winClass; MSG uMsg; memset(&uMsg,0,sizeof(uMsg)); winClass.lpszClassName = "MY_WINDOWS_CLASS"; winClass.cbSize = sizeof(WNDCLASSEX); winClass.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; winClass.lpfnWndProc = WindowProc; winClass.hInstance = hInstance; winClass.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_OPENGL_ICON); winClass.hIconSm = LoadIcon(hInstance, (LPCTSTR)IDI_OPENGL_ICON); winClass.hCursor = LoadCursor(NULL, IDC_ARROW); winClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); winClass.lpszMenuName = NULL; winClass.cbClsExtra = 0; winClass.cbWndExtra = 0; if( !RegisterClassEx(&winClass) ) return E_FAIL; g_hWnd = CreateWindowEx( NULL, "MY_WINDOWS_CLASS", "OpenGL - Loading and Viewing 3ds Objects", WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 640, 480, NULL, NULL, hInstance, NULL ); if( g_hWnd == NULL ) return E_FAIL; ShowWindow( g_hWnd, nCmdShow ); UpdateWindow( g_hWnd ); init(); while( uMsg.message != WM_QUIT ) { if( PeekMessage( &uMsg, NULL, 0, 0, PM_REMOVE ) ) { TranslateMessage( &uMsg ); DispatchMessage( &uMsg ); } else render(); } shutDown(); UnregisterClass( "MY_WINDOWS_CLASS", winClass.hInstance ); return uMsg.wParam; } //----------------------------------------------------------------------------- // Name: WindowProc() // Desc: The window's message handler //----------------------------------------------------------------------------- LRESULT CALLBACK WindowProc( HWND g_hWnd, UINT msg, WPARAM wParam, LPARAM lParam ) { static POINT ptLastMousePosit; static POINT ptCurrentMousePosit; static bool bMousing; switch( msg ) { case WM_KEYDOWN: { switch( wParam ) { case VK_ESCAPE: PostQuitMessage(0); break; case VK_F1: g_bRenderInWireFrame=!g_bRenderInWireFrame; break; } } break; case WM_LBUTTONDOWN: { ptLastMousePosit.x = ptCurrentMousePosit.x = LOWORD (lParam); ptLastMousePosit.y = ptCurrentMousePosit.y = HIWORD (lParam); bMousing = true; }