roleplay/client/test/hsv.c

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

#define FAIL -1
#define OK 0

int test_conv(int r, int g, int b, double tolerance) {
  vec3 rgb = {r/255.0, g/255.0, b/255.0};
  double hsv[3];
  vec3 out;
  int test[3];
  rgb_to_hsv(rgb, hsv);
  hsv_to_rgb(hsv, out);
  test[0] = rintf(out[0]*255.0);
  test[1] = rintf(out[1]*255.0);
  test[2] = rintf(out[2]*255.0);

  if(fabs(rgb[0] - out[0]) > tolerance || fabs(rgb[1] - out[1]) > tolerance || fabs(rgb[2] - out[2]) > tolerance || r != test[0] || g != test[1] || b != test[2]) {
    fprintf(stderr, "FAIL:\t#%02X%02X%02X -> #%02X%02X%02X\nIN:\t(%.12f %.12f %.12f)\nOUT:\t(%.12f %.12f %.12f)\nMULT:\t(%.12f %.12f %.12f)\n",
        r, g, b,
        test[0], test[1], test[2],
        rgb[0], rgb[1], rgb[2],
        out[0], out[1], out[2],
        rintf(out[0]*255.0), rintf(out[1]*255.0), rintf(out[2]*255.0));
    return FAIL;
  } else {
    return OK;
  }
}

int main() {
  for(int r = 0; r < 256; r++) {
    for(int g = 0; g < 256; g++) {
      for(int b = 0; b < 256; b++) {
        if(test_conv(r, g, b, 0.000001) != OK) {
          return -1;
        }
      }
    }
  }
}