ref: 981c041b3982e19ad4881492aa45ae3a4ede7dc4
dir: /SDL_Examples/model.c/
/* sdlGears.c */ /* * 3-D gear wheels by Brian Paul. This program is in the public domain. * * ported to libSDL/TinyGL by Gerald Franz (gfz@o2online.de) */ #include <math.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include "../include/GL/gl.h" #define STB_IMAGE_IMPLEMENTATION #include "include/stb_image.h" #define CHAD_MATH_IMPL #include "include/3dMath.h" #include "include/tobjparse.h" #define CHAD_API_IMPL #include "include/api_audio.h" #include <SDL/SDL.h> #include "../include/zbuffer.h" #include <time.h> #ifndef M_PI # define M_PI 3.14159265 #endif vec3 campos = (vec3){.d[0]=0,.d[1]=0,.d[2]=-3}; vec3 camforw = (vec3){.d[0]=0,.d[1]=0,.d[2]=-1}; vec3 camup = (vec3){.d[0]=0,.d[1]=1,.d[2]=0}; uint wasdstate[4] = {0,0,0,0}; const float mouseratiox = 1.0/300.0f; const float mouseratioy = 1.0/300.0f; int mousex = 0, mousey = 0; void rotateCamera(){ vec3 a; a.d[1] = (float)mousex * mouseratiox; a.d[2] = (float)mousey * mouseratioy; //if(fabsf(camforw.d[0]) < 0.001) camforw.d[0] = 0.001; vec3 right = normalizev3( crossv3( normalizev3(camforw), normalizev3(camup) ) );right.d[1]=0; vec3 result = rotatev3(camforw,right,-a.d[2]); camup = crossv3(right,camforw); camforw = rotatev3(result,camup,-a.d[1]); //if(fabsf(camforw.d[0]) < 0.001) camforw.d[0] = 0.001; } GLuint loadRGBTexture(unsigned char* buf, unsigned int w, unsigned int h){ GLuint t = 0; glGenTextures(1, &t); // for(unsigned int i = 0; i < w * h; i++) // { // unsigned char t = 0; // unsigned char* r = buf + i*3; // // unsigned char* g = buf + i*3+1; // unsigned char* b = buf + i*3+2; // t = *r; // *r = *b; // *b = t; // } glBindTexture(GL_TEXTURE_2D,t); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexImage2D(GL_TEXTURE_2D,0,3,w,h,0,GL_RGB,GL_UNSIGNED_BYTE,buf); return t; } void drawModel( //HUGE important note! these depend on the math library using //f_ as float and not double! //Remember that! vec3* points, uint npoints, vec3* colors, vec3* normals, vec3* texcoords ){ if(!points)return; glBegin(GL_TRIANGLES); for(uint i = 0; i < npoints;i++){ if(colors){ //Fix for TinyGL color interpolation. glColor3f(colors[i].d[0],colors[i].d[1],colors[i].d[2]); } if(texcoords) glTexCoord2f(texcoords[i].d[0],texcoords[i].d[1]); if(normals) glNormal3f(normals[i].d[0],normals[i].d[1],normals[i].d[2]); glVertex3f(points[i].d[0],points[i].d[1],points[i].d[2]); } glEnd(); } GLuint createModelDisplayList( //HUGE important note! these depend on the math library using //f_ as float and not double! //Remember that! vec3* points, uint npoints, vec3* colors, vec3* normals, vec3* texcoords ){ GLuint ret = 0; if(!points)return 0; ret = glGenLists(1); glNewList(ret, GL_COMPILE); glBegin(GL_TRIANGLES); for(uint i = 0; i < npoints; i++){ if(colors){ glColor3f(colors[i].d[0],colors[i].d[1],colors[i].d[2]); } if(texcoords) glTexCoord2f(texcoords[i].d[0],texcoords[i].d[1]); if(normals) glNormal3f(normals[i].d[0],normals[i].d[1],normals[i].d[2]); glVertex3f(points[i].d[0],points[i].d[1],points[i].d[2]); } //printf("\ncreateModelDisplayList is not the problem.\n"); glEnd(); glEndList(); return ret; } GLubyte stipplepattern[128] = { 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA, 0xAA,0xAA,0xAA,0xAA, ~0xAA,~0xAA,~0xAA,~0xAA }; #define BEGIN_EVENT_HANDLER void events(SDL_Event* e){switch(e->type){ #define E_KEYSYM e->key.keysym.sym #define END_EVENT_HANDLER }} #define EVENT_HANDLER events #define E_MOTION e->motion #define E_BUTTON e->button.button #define E_WINEVENT e->window.event #define E_WINW e->window.data1 #define E_WINH e->window.data2 int isRunning=1; /* mousex = (kHeld & KEY_Y)?-30:0 + (kHeld & KEY_A)?30:0; mousey = (kHeld & KEY_X)?-30:0 + (kHeld & KEY_B)?30:0; */ BEGIN_EVENT_HANDLER case SDL_KEYDOWN: switch(E_KEYSYM) { case SDLK_w: wasdstate[0] = 1;break; case SDLK_a: wasdstate[1] = 1;break; case SDLK_s: wasdstate[2] = 1;break; case SDLK_d: wasdstate[3] = 1;break; case SDLK_UP: mousey = -30; break; case SDLK_DOWN: mousey = 30; break; case SDLK_LEFT: mousex = -30; break; case SDLK_RIGHT: mousex = 30; break; case SDLK_ESCAPE : case SDLK_q : isRunning=0;break; default: break; } break; case SDL_KEYUP: switch(E_KEYSYM) { case SDLK_w: wasdstate[0] = 0;break; case SDLK_a: wasdstate[1] = 0;break; case SDLK_s: wasdstate[2] = 0;break; case SDLK_d: wasdstate[3] = 0;break; case SDLK_UP: case SDLK_DOWN: mousey = 0; break; case SDLK_LEFT: case SDLK_RIGHT: mousex = 0; break; default: break; } break; case SDL_QUIT: isRunning=0; break; END_EVENT_HANDLER int main(int argc, char **argv) { // initialize SDL video: int winSizeX=640; int winSizeY=480; unsigned int count = 40; GLuint modelDisplayList = 0; int dlExists = 0; char* modelName = "extrude.obj"; track* myTrack = NULL; unsigned int fps =0; if(argc > 2){ char* larg = argv[1]; for(int i = 0; i < argc; i++){ if(!strcmp(larg,"-w")) winSizeX = atoi(argv[i]); if(!strcmp(larg,"-h")) winSizeY = atoi(argv[i]); if(!strcmp(larg,"-fps")) fps = strtoull(argv[i],0,10); if(!strcmp(larg,"-count")) count = strtoull(argv[i],0,10); if(!strcmp(larg,"-m")) modelName = argv[i]; larg = argv[i]; } } if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)<0) { fprintf(stderr,"ERROR: cannot initialize SDL video.\n"); return 1; } ainit(0); SDL_Surface* screen = NULL; if((screen=SDL_SetVideoMode( winSizeX, winSizeY, TGL_FEATURE_RENDER_BITS, SDL_SWSURFACE)) == 0 ) { fprintf(stderr,"ERROR: Video mode set failed.\n"); return 1; } printf("\nRMASK IS %u",screen->format->Rmask); printf("\nGMASK IS %u",screen->format->Gmask); printf("\nBMASK IS %u",screen->format->Bmask); printf("\nAMASK IS %u",screen->format->Amask); printf("\nRSHIFT IS %u",screen->format->Rshift); printf("\nGSHIFT IS %u",screen->format->Gshift); printf("\nBSHIFT IS %u",screen->format->Bshift); printf("\nASHIFT IS %u",screen->format->Ashift); fflush(stdout); myTrack = lmus("WWGW.mp3"); mplay(myTrack, -1, 1000); SDL_ShowCursor(SDL_DISABLE); SDL_WM_SetCaption(argv[0],0); // initialize TinyGL: unsigned int pitch; int mode; switch( screen->format->BitsPerPixel ) { case 8: fprintf(stderr,"ERROR: Palettes are currently not supported.\n"); fprintf(stderr,"\nUnsupported by maintainer!!!"); return 1; case 16: pitch = screen->pitch; //fprintf(stderr,"\nUnsupported by maintainer!!!"); mode = ZB_MODE_5R6G5B; //return 1; break; case 24: pitch = ( screen->pitch * 2 ) / 3; fprintf(stderr,"\nUnsupported by maintainer!!!"); mode = ZB_MODE_RGB24; return 1; break; case 32: pitch = screen->pitch / 2; mode = ZB_MODE_RGBA; break; default: return 1; break; } ZBuffer *frameBuffer = ZB_open( winSizeX, winSizeY, mode, 0, 0, 0, 0); glInit( frameBuffer ); srand(time(NULL)); // initGL(winSizeX,winSizeY); // initialize GL: glShadeModel(GL_SMOOTH); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); glEnable(GL_DEPTH_TEST); glEnable(GL_LIGHTING); glEnable(GL_CULL_FACE); glCullFace(GL_BACK); // glEnable(GL_TEXTURE_2D); glEnable(GL_COLOR_MATERIAL); // glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER,1); glLightModeli(GL_LIGHT_MODEL_TWO_SIDE,0); glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE); glClearColor(0,0,0,0); glClearDepth(1.0f); glClearColor(0,0,0.3,0); glDisable(GL_TEXTURE_2D); glEnable(GL_DEPTH_TEST); glDisable(GL_LIGHTING); glShadeModel(GL_SMOOTH); //glDisable(GL_DEPTH_TEST); double t = 0; glViewport(0,0,winSizeX,winSizeY); //glEnable(GL_POLYGON_STIPPLE); //glPolygonStipple(stipplepattern); //initScene(); { objraw omodel; model m = initmodel(); omodel = tobj_load(modelName); if(!omodel.positions) {puts("\nERROR! No positions in model. Aborting...\n");} else { m = tobj_tomodel(&omodel); printf("\nHas %d points.\n",m.npoints); modelDisplayList = createModelDisplayList( m.d, m.npoints, m.c, m.n, m.t );dlExists = 1; freemodel(&m); } freeobjraw(&omodel); } GLuint tex = 0; { int sw = 0, sh = 0, sc = 0; //sc goes unused. uchar* source_data = stbi_load("tex.jpg", &sw, &sh, &sc, 3); if(source_data){ tex = loadRGBTexture(source_data, sw, sh); free(source_data); } //tex = } glDisable(GL_LIGHTING); // variables for timing: unsigned int frames=0; unsigned int tNow=SDL_GetTicks(); unsigned int tLastFps=tNow; // main loop: while(isRunning) { ++frames; t+=0.016666f; tNow=SDL_GetTicks(); // do event handling: SDL_Event evt; mousex = 0; mousey = 0; while( SDL_PollEvent( &evt ) ) EVENT_HANDLER(&evt) ; /* switch(evt.type) { } */ // draw scene: #define WIDTH winSizeX #define HEIGHT winSizeY glMatrixMode(GL_PROJECTION); glLoadIdentity(); //gluPerspective(70,(float)WIDTH/(float)HEIGHT,1,512); mat4 matrix = perspective(70,(float)WIDTH/(float)HEIGHT,1,512); glLoadMatrixf(matrix.d); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glPushMatrix(); //Pushing on the LookAt Matrix. vec3 right = normalizev3( crossv3( normalizev3(camforw), normalizev3(camup) ) );right.d[1]=0; matrix = (lookAt(campos,addv3(campos,camforw),camup)); //Using right vector to correct for screen rotation. glLoadMatrixf(matrix.d); if(wasdstate[0]) campos = addv3(campos, scalev3(0.1, camforw ) ); if(wasdstate[2]) campos = addv3(campos, scalev3(-0.1, camforw ) ); if(wasdstate[1]) campos = addv3(campos, scalev3(-0.1, right ) ); if(wasdstate[3]) campos = addv3(campos, scalev3(0.1, right ) ); glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); glEnable(GL_DEPTH_TEST); glBindTexture(GL_TEXTURE_2D,tex); //glDisable(GL_BLEND); //glDisable(GL_TEXTURE_2D); //printf("\nNew triangle!\n"); if(!dlExists){ glDisable(GL_TEXTURE_2D); glBegin(GL_TRIANGLES); //glColor3f(0,0,1); glColor3f(1,0,0);glTexCoord2f(0,0);glVertex3f(-1,-1,-10); glColor3f(0,1,0);glTexCoord2f(1,0);glVertex3f(1,-1,-10); glColor3f(0,0,1);glTexCoord2f(0.5,1);glVertex3f(0,1,-10); //glColor3f(0,1,0); glEnd(); } else { glEnable(GL_TEXTURE_2D); //glDisable(GL_TEXTURE_2D); glEnable(GL_POLYGON_STIPPLE); //glDisable(GL_COLOR_MATERIAL); for(unsigned int i = 0; i < count; i++){ glPushMatrix(); glTranslatef((float)(i%10) * 8.0,(float)(i/10) * 8.0,-10); glCallList(modelDisplayList); // drawModel( // m.d, m.npoints, // m.c, // m.n, // m.t // ); glPopMatrix(); } glDisable(GL_POLYGON_STIPPLE); glDisable(GL_TEXTURE_2D); } //draw(); glPopMatrix(); //The view transform. rotateCamera(); glTextSize(GL_TEXT_SIZE16x16); glDrawText((unsigned char*)"\nModel Viewer Demo-\nTinyGL\nSDL 1.2\n", 0, 0, 0x000000FF); // swap buffers: if ( SDL_MUSTLOCK(screen) && (SDL_LockSurface(screen)<0) ) { fprintf(stderr, "SDL ERROR: Can't lock screen: %s\n", SDL_GetError()); return 1; } /* printf("\nRMASK IS %u",screen->format->Rmask); printf("\nGMASK IS %u",screen->format->Gmask); printf("\nBMASK IS %u",screen->format->Bmask); printf("\nAMASK IS %u",screen->format->Amask); */ //Quickly convert all pixels to the correct format #if TGL_FEATURE_RENDER_BITS == 32 for(int i = 0; i < frameBuffer->xsize* frameBuffer->ysize;i++){ #define DATONE (frameBuffer->pbuf[i]) DATONE = ((DATONE & 0x000000FF) ) << screen->format->Rshift | ((DATONE & 0x0000FF00) >> 8) << screen->format->Gshift | ((DATONE & 0x00FF0000) >>16) << screen->format->Bshift; } #endif ZB_copyFrameBuffer(frameBuffer, screen->pixels, screen->pitch); if ( SDL_MUSTLOCK(screen) ) SDL_UnlockSurface(screen); SDL_Flip(screen); if(fps>0) if((1000/fps)>(SDL_GetTicks()-tNow)) { SDL_Delay((1000/fps)-(SDL_GetTicks()-tNow)); //Yay stable framerate! } // check for error conditions: char* sdl_error = SDL_GetError( ); if( sdl_error[0] != '\0' ) { fprintf(stderr,"SDL ERROR: \"%s\"\n",sdl_error); SDL_ClearError(); } // update fps: if(tNow>=tLastFps+5000) { printf("%i frames in %f secs, %f frames per second.\n",frames,(float)(tNow-tLastFps)*0.001f,(float)frames*1000.0f/(float)(tNow-tLastFps)); tLastFps=tNow; frames=0; } } printf("%i frames in %f secs, %f frames per second.\n",frames,(float)(tNow-tLastFps)*0.001f,(float)frames*1000.0f/(float)(tNow-tLastFps)); // cleanup: glDeleteTextures(1, &tex); //glDeleteList(modelDisplayList); glDeleteLists(modelDisplayList, 1); ZB_close(frameBuffer); if(SDL_WasInit(SDL_INIT_VIDEO)) SDL_QuitSubSystem(SDL_INIT_VIDEO); mhalt(); Mix_FreeMusic(myTrack); acleanup(); SDL_Quit(); return 0; }