99 lines
2.1 KiB
D
99 lines
2.1 KiB
D
import std.stdio;
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import derelict.sdl.sdl;
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import derelict.opengl.gl;
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import derelict.opengl.glu;
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enum int WIDTH = 800;
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enum int HEIGHT = 600;
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static bool drawing = false;
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void init()
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{
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glClearColor (0.0, 0.0, 0.0, 0.0);
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glShadeModel(GL_SMOOTH);
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glViewport(0, 0, WIDTH, HEIGHT);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(60.0, cast(GLfloat)WIDTH/cast(GLfloat)HEIGHT, 1.0, 30.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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glTranslatef(0.0, 0.0, -10.0);
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}
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void display()
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{
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drawing = true;
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glClear(GL_COLOR_BUFFER_BIT);
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glPushMatrix();
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glRotatef(SDL_GetTicks() * 90.0 / 1000, 0, 0, 1);
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glBegin(GL_QUADS);
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glColor3f(1, 1, 1);
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glVertex3f(5.0, 5.0, 0.0);
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glColor3f(1, 0, 0);
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glVertex3f(-5.0, 5.0, 0.0);
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glColor3f(0, 0, 1);
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glVertex3f(-5.0, -5.0, 0.0);
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glColor3f(0, 1, 0);
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glVertex3f(5.0, -5.0, 0.0);
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glEnd();
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glPopMatrix();
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drawing = false;
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SDL_GL_SwapBuffers();
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}
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extern (C) Uint32 timer_callback(Uint32 interval, void *param)
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{
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if (!drawing)
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{
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SDL_Event event;
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event.type = SDL_USEREVENT;
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SDL_PushEvent(&event);
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}
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return interval;
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}
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int main(char[][] args)
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{
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DerelictSDL.load();
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DerelictGL.load();
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DerelictGLU.load();
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if (SDL_Init(SDL_INIT_EVERYTHING))
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{
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writefln("Failed to initialize SDL!");
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return 1;
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}
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SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
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SDL_Surface *screen = SDL_SetVideoMode(WIDTH, HEIGHT, 32, SDL_OPENGL);
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if (screen == null)
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{
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printf("Failed to set video mode!\n");
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SDL_Quit();
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return 2;
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}
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init();
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SDL_Event event;
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SDL_AddTimer(1000 / 60, &timer_callback, null);
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while (SDL_WaitEvent(&event))
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{
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if (event.type == SDL_QUIT)
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break;
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else if (event.type == SDL_KEYDOWN)
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{
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if (event.key.keysym.sym == SDLK_ESCAPE)
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break;
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}
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else if (event.type == SDL_USEREVENT)
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{
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display();
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}
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}
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SDL_Quit();
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return 0;
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}
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