int main( int argc, char* args[] )
{
SDL_Surface *screen;
Uint32 width = 640;
Uint32 height = 480;
Uint32 bpp = 32;
Uint32 flags = SDL_HWSURFACE;
int i; for (i = 1; i < argc; i++) if (!strcasecmp("--fullscreen", args[i])) flags |= SDL_FULLSCREEN;
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "Video initialization failed: %s\n", SDL_GetError());
exit(-1);
}
if ((screen = SDL_SetVideoMode(width, height, bpp, flags)) == 0) {
fprintf(stderr, "Video mode set failed: %s\n", SDL_GetError());
exit(-1);
}
SDL_FillRect(screen, NULL, 0x333333);
prepare_inline_font();
/* infont(SDL_LoadBMP("fonts/oddball6x8.bmp")); */
incolor(0xFF0000, 0x333333);
inprint(screen, "Hello World!", 10, 10);
incolor(0x000000, 0xFFFFFF);
inprint(screen, "A QUICK BROWN FOX JUMPS OVER A LAZY DOG!", 10, 30);
inprint(screen, "a quick brown fox jumps over a lazy dog?", 10, 60);
inprint(screen, "`'.,:;0123456789{}()[]|\\/-+*=!@#$%^&", 10, 90);
/* Wait for a while */
for (i = 1000; i > 20; i--) { SDL_Flip(screen); SDL_Delay(10); }
kill_inline_font();
SDL_Quit();
return 0;
}
void drawmandelbrot(SDL_Surface *surface) {
if (SDL_MUSTLOCK(surface)) {
SDL_LockSurface(surface);
}
Uint32 *pixels = (Uint32 *) surface->pixels;
for (int i = 0; i < surface->w * surface->h; i++) {
int y = i / surface->w;
int x = i % surface->w;
float complex c = ((3.0f * x / surface->w) - 2.0f)
+ I * ((2.0f * y / surface->h) - 1.0f);
bool diverges = false;
float complex z = 0;
int it;
for (it = 1; it <= max_it; it++) {
/* z = z² + c */
z = cpowf(z, 2) + c;
/* If |z| ever gets greater than 2, it diverges. */
if (cabsf(z) > 2) {
diverges = true;
break;
}
}
Uint32 color;
if (diverges) {
color = outcolor(it);
} else {
color = incolor();
}
pixels[i] = color;
/* Update the screen every 10 lines. */
if (y % 10 == 0 && x == 0) {
SDL_Flip(surface);
}
}
/* Update the screen a final time. */
SDL_Flip(surface);
if (SDL_MUSTLOCK(surface)) {
SDL_UnlockSurface(surface);
}
}