float[] hsv2rgb(float h, float s, float v) {
float r, g, b, i, f, p, q, t;
float[] ret = { 0,0,0 };
r = g = b = 0;
h%=360;
if(v==0) {return ret;}
s/=100;
v/=100;
h/=60;
i = floor(h);
f = h-i;
p = v*(1-s);
q = v*(1-(s*f));
t = v*(1-(s*(1-f)));
if (i==0) {r=v; g=t; b=p;}
else if (i==1) {r=q; g=v; b=p;}
else if (i==2) {r=p; g=v; b=t;}
else if (i==3) {r=p; g=q; b=v;}
else if (i==4) {r=t; g=p; b=v;}
else if (i==5) {r=v; g=p; b=q;}
ret[0] = floor(r*255);
ret[1] = floor(g*255);
ret[2] = floor(b*255);
return ret;
}

float[] rgb2hsv(float r, float g, float b) {
float x, val, f, i, h, s, v;
h=s=v=0;
float[] ret = { 0,0,0 };
r/=255;
g/=255;
b/=255;
x = min(min(r, g), b);
val = max(max(r, g), b);
if (x==val){
ret[0] = 0;
ret[1] = 0;
ret[2] = floor(val*100);
return( ret );
}
f = (r == x) ? g-b : ((g == x) ? b-r : r-g);
i = (r == x) ? 3 : ((g == x) ? 5 : 1);
ret[0] = floor((i-f/(val-x))*60)%360;
ret[1] = floor(((val-x)/val)*100);
ret[2] = floor(val*100);
return(ret);
}


void RGBtoXYZ(float [] rgb, float [] xyz) {
  float r = rgb[0] / this.g.colorModeX;
  float g = rgb[1] / this.g.colorModeY; 
  float b = rgb[2] / this.g.colorModeZ;
  r = (r > 0.04045f) ? pow(((r+0.055f)/1.055f),2.4f) : r/12.92f;
  g = (g > 0.04045f) ? pow(((g+0.055f)/1.055f),2.4f) : g/12.92f;
  b = (b > 0.04045f) ? pow(((b+0.055f)/1.055f),2.4f) : b/12.92f;
  r *= 100.0f;
  g *= 100.0f;
  b *= 100.0f;
  xyz[0] = (r * 0.4124f + g * 0.3576f + b * 0.1805f);
  xyz[1] = (r * 0.2126f + g * 0.7152f + b * 0.0722f);
  xyz[2] = (r * 0.0193f + g * 0.1192f + b * 0.9505f);
}


void XYZtoRGB(float [] xyz, float [] rgb) {
  float x = xyz[0] /  100.0f;
  float y = xyz[1] / 100.0f;
  float z = xyz[2] / 100.0f;
  float r = (x * 3.2406f + y * -1.5372f + z * -0.4986f);
  float g = (x * -0.9689f + y * 1.8758f + z * 0.0415f);
  float b = (x * -0.0557f + y * -0.2040f + z * 1.0570f);
  r = (r > 0.0031308f) ? 1.055f*(pow(r,1.0f/2.4f))-0.055f : 12.92f*r;
  g = (g > 0.0031308f) ? 1.055f*(pow(g,1.0f/2.4f))-0.055f : 12.92f*g;
  b = (b > 0.0031308f) ? 1.055f*(pow(b,1.0f/2.4f))-0.055f : 12.92f*b;
  rgb[0] = r * this.g.colorModeX;
  rgb[1] = g * this.g.colorModeY;
  rgb[2] = b * this.g.colorModeZ;
}