Function HSVtoRGB

test/pthread/test_pthread_mandelbrot.cpp:31–80

h: 0,360 s: 0,1 v: 0,1

// s: 0,1
// v: 0,1
void HSVtoRGB(float *r, float *g, float *b, float h, float s, float v)
{
  int i;
  float f, p, q, t;
  if (s == 0)
  {
    // achromatic (grey)
    *r = *g = *b = v;
    return;
  }
  h /= 60;      // sector 0 to 5
  i = floor(h);
  f = h - i;      // factorial part of h
  p = v * (1 - s);
  q = v * (1 - s * f);
  t = v * (1 - s * (1 - f));
  switch(i)
  {
  case 0:
    *r = v;
    *g = t;
    *b = p;
    break;
  case 1:
    *r = q;
    *g = v;
    *b = p;
    break;
  case 2:
    *r = p;
    *g = v;
    *b = t;
    break;
  case 3:
    *r = p;
    *g = q;
    *b = v;
    break;
  case 4:
    *r = t;
    *g = p;
    *b = v;
    break;
  default:    // case 5:
    *r = v;
    *g = p;
    *b = q;
    break;
  }
}

int smallestIterOut = 0x7FFFFFFF;
uint32_t ColorMap(int iter)