#include <stdio.h>
#include <math.h>
#include "Run.h"

typedef struct {

  float red;
  float green;
  float bule;
  float alpha;

} rgb_t;

void
mandelbrot(float &za, float &zb, float cx, float cy) {

  float tmp_za = za;
  float tmp_zb = zb;

  za = tmp_za * tmp_za - tmp_zb * tmp_zb + cx;
  zb = 2 * tmp_za * tmp_zb + cy;

}

void
set_rgb(rgb_t rgb, int *pixels)
{

  *pixels = (char)rgb.red | ((char)rgb.green) << 8 | ((char)rgb.bule) << 16 | ((char)rgb.alpha) << 24;
  //*pixels = 255;

}

void
run(void *in, void *out, int size_in, int size_out)
{

  int *pixels = (int*)out;
  int *location = (int*)in;

  for (int l = location[0]; l <= location[0] + size_out; l += 4) {
    int x = l / 4 % 1920;
    int y = l / 4 / 1920;

    float a = 0;
    float b = 0;

    float cx = (x - 1200) / 500.f;
    float cy = (y - 540) / 500.f;
    
    int i;
    for (i = 0; i < 255; i++) {

      mandelbrot(a, b, cx, cy);

      if( a*a + b*b > 4) {
	break;
      }

    }

    rgb_t rgb;
    rgb.red = 255 * sin(i);
    rgb.green = 255 * sin(i);
    rgb.bule = 255 * cos(i);
    rgb.alpha = 1;
    
    set_rgb( rgb, &pixels[(l - location[0]) / 4] );
  }

  
  //printf("location[0] %d\n",location[0]);
  //printf("location[1] %d\n",location[1]);

  //rgb.red = 0;
  //rgb.green = 255;
  //rgb.bule = 255;
  //rgb.alpha = 1;

}