1ef4c721a0
Added Bullet SAP/MultiSAP support by Erwin Coumans (BulletSAPCompleteBoxPruningTest.*) AABB tree broadphase by Nathanael Presson (btDbvt.*, DbvtTest.*)
217 lines
7.0 KiB
C
217 lines
7.0 KiB
C
// ---------------------------------------------------------------------------
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//
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// @file TwSimpleSDL.c
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// @brief A simple example that uses AntTweakBar with OpenGL and SDL.
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//
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// AntTweakBar: http://www.antisphere.com/Wiki/tools:anttweakbar
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// OpenGL: http://www.opengl.org
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// SDL: http://www.libsdl.org
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//
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// @author Philippe Decaudin - http://www.antisphere.com
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// @date 2006/05/20
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//
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// note: TAB=4
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//
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// Compilation:
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// http://www.antisphere.com/Wiki/tools:anttweakbar:examples#twsimplesdl
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//
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// ---------------------------------------------------------------------------
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#include <AntTweakBar.h>
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#include <SDL/SDL.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#ifdef _WIN32
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# include <windows.h> // required by gl.h
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#endif
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#include <GL/gl.h>
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#include <GL/glu.h>
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// SDL redefines main
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#ifdef main
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# undef main
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#endif
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int main()
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{
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const SDL_VideoInfo* video = NULL;
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int width = 640, height = 480;
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int bpp, flags;
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int quit = 0;
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TwBar *bar;
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int n, numCubes = 30;
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float color0[] = { 1.0f, 0.5f, 0.0f };
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float color1[] = { 0.5f, 1.0f, 0.0f };
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double ka = 5.3, kb = 1.7, kc = 4.1;
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// Initialize SDL, then get the current video mode and use it to create a SDL window.
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if( SDL_Init(SDL_INIT_VIDEO)<0 )
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{
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fprintf(stderr, "Video initialization failed: %s\n", SDL_GetError());
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SDL_Quit();
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exit(1);
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}
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video = SDL_GetVideoInfo();
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if( !video )
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{
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fprintf(stderr, "Video query failed: %s\n", SDL_GetError());
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SDL_Quit();
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exit(1);
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}
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SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
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SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
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SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
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//SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 1);
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SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 16);
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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bpp = video->vfmt->BitsPerPixel;
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flags = SDL_OPENGL | SDL_HWSURFACE | SDL_RESIZABLE;
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//flags |= SDL_FULLSCREEN;
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if( !SDL_SetVideoMode(width, height, bpp, flags) )
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{
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fprintf(stderr, "Video mode set failed: %s", SDL_GetError());
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SDL_Quit();
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exit(1);
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}
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SDL_WM_SetCaption("AntTweakBar simple example using SDL", "AntTweakBar+SDL");
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// Enable SDL unicode and key-repeat
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SDL_EnableUNICODE(1);
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SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
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// Set OpenGL viewport and states
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glViewport(0, 0, width, height);
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0); // use default light diffuse and position
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glEnable(GL_NORMALIZE);
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glEnable(GL_COLOR_MATERIAL);
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glDisable(GL_CULL_FACE);
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glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
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// Initialize AntTweakBar
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TwInit(TW_OPENGL, NULL);
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// Tell the window size to AntTweakBar
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TwWindowSize(width, height);
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// Create a tweak bar
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bar = TwNewBar("TweakBar");
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// Add 'width' and 'height' to 'bar': they are read-only (RO) variables of type TW_TYPE_INT32.
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TwAddVarRO(bar, "Width", TW_TYPE_INT32, &width, " label='Wnd width (pixels)' ");
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TwAddVarRO(bar, "Height", TW_TYPE_INT32, &height, " label='Wnd height (pixels)' ");
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// Add 'quit' to 'bar': it is a modifiable (RW) variable of type TW_TYPE_BOOL32 (boolean stored in a 32 bits integer). Its shortcut is [ESC].
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TwAddVarRW(bar, "Quit", TW_TYPE_BOOL32, &quit, " label='Quit?' true='+' false='-' key='ESC' ");
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// Add 'numCurves' to 'bar': it is a modifiable variable of type TW_TYPE_INT32. Its shortcuts are [c] and [C].
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TwAddVarRW(bar, "NumCubes", TW_TYPE_INT32, &numCubes, " label='Number of cubes' min=1 max=100 keyIncr=c keyDecr=C ");
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// Add 'ka', 'kb and 'kc' to 'bar': they are modifiable variables of type TW_TYPE_DOUBLE
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TwAddVarRW(bar, "ka", TW_TYPE_DOUBLE, &ka, " label='X path coeff' keyIncr=1 keyDecr=CTRL+1 min=-10 max=10 step=0.01 ");
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TwAddVarRW(bar, "kb", TW_TYPE_DOUBLE, &kb, " label='Y path coeff' keyIncr=2 keyDecr=CTRL+2 min=-10 max=10 step=0.01 ");
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TwAddVarRW(bar, "kc", TW_TYPE_DOUBLE, &kc, " label='Z path coeff' keyIncr=3 keyDecr=CTRL+3 min=-10 max=10 step=0.01 ");
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// Add 'color0' and 'color1' to 'bar': they are modifable variables of type TW_TYPE_COLOR3F (3 floats color)
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TwAddVarRW(bar, "color0", TW_TYPE_COLOR3F, &color0, " label='Start color' ");
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TwAddVarRW(bar, "color1", TW_TYPE_COLOR3F, &color1, " label='End color' ");
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// Main loop:
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// - Draw some cubes
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// - Process events
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while( !quit )
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{
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SDL_Event event;
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int handled;
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// Clear screen
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glClearColor(0.6f, 0.95f, 1.0f, 1);
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glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
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// Set OpenGL camera
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(40, (double)width/height, 1, 10);
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gluLookAt(0,0,3, 0,0,0, 0,1,0);
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// Draw cubes
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for( n=0; n<numCubes; ++n )
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{
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double t = 0.05*n - (double)SDL_GetTicks()/2000.0;
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double r = 5.0*n + (double)SDL_GetTicks()/10.0;
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float c = (float)n/numCubes;
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// Set cube position
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslated(0.4+0.6*cos(ka*t), 0.6*cos(kb*t), 0.6*sin(kc*t));
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glRotated(r, 0.2, 0.7, 0.2);
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glScaled(0.1, 0.1, 0.1);
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glTranslated(-0.5, -0.5, -0.5);
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// Set cube color
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glColor3f((1.0f-c)*color0[0]+c*color1[0], (1.0f-c)*color0[1]+c*color1[1], (1.0f-c)*color0[2]+c*color1[2]);
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// Draw cube
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glBegin(GL_QUADS);
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glNormal3f(0,0,-1); glVertex3f(0,0,0); glVertex3f(0,1,0); glVertex3f(1,1,0); glVertex3f(1,0,0); // front face
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glNormal3f(0,0,+1); glVertex3f(0,0,1); glVertex3f(1,0,1); glVertex3f(1,1,1); glVertex3f(0,1,1); // back face
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glNormal3f(-1,0,0); glVertex3f(0,0,0); glVertex3f(0,0,1); glVertex3f(0,1,1); glVertex3f(0,1,0); // left face
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glNormal3f(+1,0,0); glVertex3f(1,0,0); glVertex3f(1,1,0); glVertex3f(1,1,1); glVertex3f(1,0,1); // right face
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glNormal3f(0,-1,0); glVertex3f(0,0,0); glVertex3f(1,0,0); glVertex3f(1,0,1); glVertex3f(0,0,1); // bottom face
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glNormal3f(0,+1,0); glVertex3f(0,1,0); glVertex3f(0,1,1); glVertex3f(1,1,1); glVertex3f(1,1,0); // top face
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glEnd();
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}
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// Draw tweak bars
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TwDraw();
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// Present frame buffer
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SDL_GL_SwapBuffers();
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// Process incoming events
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while( SDL_PollEvent(&event) )
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{
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// Send event to AntTweakBar
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handled = TwEventSDL(&event);
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// If event has not been handled by AntTweakBar, process it
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if( !handled )
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{
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switch( event.type )
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{
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case SDL_QUIT: // Window is closed
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quit = 1;
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break;
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case SDL_VIDEORESIZE: // Window size has changed
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// Resize SDL video mode
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width = event.resize.w;
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height = event.resize.h;
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if( !SDL_SetVideoMode(width, height, bpp, flags) )
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fprintf(stderr, "WARNING: Video mode set failed: %s", SDL_GetError());
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// Resize OpenGL viewport
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glViewport(0, 0, width, height);
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// Restore OpenGL states (SDL seems to lost them)
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glEnable(GL_DEPTH_TEST);
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glEnable(GL_LIGHTING);
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glEnable(GL_LIGHT0);
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glEnable(GL_NORMALIZE);
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glEnable(GL_COLOR_MATERIAL);
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glDisable(GL_CULL_FACE);
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glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
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// TwWindowSize has been called by TwEventSDL, so it is not necessary to call it again here.
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break;
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}
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}
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}
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} // End of main loop
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// Terminate AntTweakBar
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TwTerminate();
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// Terminate SDL
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SDL_Quit();
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return 0;
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}
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