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#include <stdlib.h>
#include <stdio.h>
#include <SDL2/SDL.h>
void *win;
void *rnd;
int W;
int H;
int *col;
plot(int x, int y)
{
int n;
int fx;
int fy;
int zx;
int zy;
int nx;
int ny;
fx = (x - W/2)*4000 / W;
fy = (y - H/2)*4000 / H;
zx = fx;
zy = fy;
for (n=0; n<200; n++) {
if (zx*zx + zy*zy > 4000000)
break;
nx = (zx*zx)/1000 - (zy*zy)/1000 + fx;
ny = zx*zy/500 + fy;
zx = nx;
zy = ny;
}
n = 255 - col[n];
SDL_SetRenderDrawColor(rnd, n, 130, n, 255);
SDL_RenderDrawPoint(rnd, x, y);
return 0;
}
main() {
int c;
int n;
int x;
int y;
void *e;
int *ie;
W = 400;
H = 400;
SDL_Init(32);
win = SDL_CreateWindow("Mandelbrot MiniC", 0, 0, W, H, 0);
rnd = SDL_CreateRenderer(win, -1, 0);
e = malloc(56);
ie = e;
col = malloc(201 * sizeof (int));
c = 20;
for (n=0; n<200; n++) {
col[n] = c;
if (c > 255)
printf("%d\n", c);
c += (255-c)/8;
}
col[n] = 0;
SDL_RenderClear(rnd);
for (x=0; x<W; x++)
for (y=0; y<H; y++)
plot(x, y);
SDL_RenderPresent(rnd);
for (;;) {
if (SDL_PollEvent(e)) {
if (ie[0] == 769)
break;
}
}
SDL_DestroyRenderer(rnd);
SDL_DestroyWindow(win);
SDL_Quit();
return 0;
}
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