Need help generating random colors by HSV (not RGB)

Question

Hello guys ,I'm not sure if what I want is even possible, but here goes! The script below generates random fore and-backgroundcolors based on RGB. Instead, I want to generate colors by HSV.So this... #target photoshop
var Colour = new SolidColor;
Colour.rgb.red = Math.ceil(255*Math.random());
Colour.rgb.green = Math.ceil(255*Math.random());
Colour.rgb.blue = Math.ceil(255*Math.random());
app.foregroundColor = Colour;
Colour.rgb.red = Math.ceil(255*Math.random());
Colour.rgb.green = Math.ceil(255*Math.random());
Colour.rgb.blue = Math.ceil(255*Math.random());
app.backgroundColor = Colour; ...would look like something like this :  #target photoshop
var Colour = new SolidColor;
Colour.hsv.hue = Math.ceil(360*Math.random());
Colour.hsv.saturation = Math.ceil(100*Math.random());
Colour.hsv.value = Math.ceil(100*Math.random());
app.foregroundColor = Colour;
Colour.hsv.hue = Math.ceil(360*Math.random());
Colour.hsv.saturation = Math.ceil(100*Math.random());
Colour.hsv.value = Math.ceil(100*Math.random());
app.backgroundColor = Colour; Even better would be if I could select a range in the hue slider. So I can isolate a specific color.Any help is greately appreciated!

rob day · Accepted Answer

Photoshop uses HSB not HSV. Something like this would let you set a min/max range for hue:

#target photoshop
app.backgroundColor = randomHSB(90, 240);
app.foregroundColor = randomHSB(0, 45);

/**
* returns a random HSB color 
* @returns a SolidColor 
* 
*/
function randomHSB(hmin, hmax){
    colorobj = new SolidColor()
    colorobj.hsb.hue = getRndInteger(hmin, hmax);
    colorobj.hsb.saturation = getRndInteger(0, 100);
    colorobj.hsb.brightness = getRndInteger(0, 100); 
    return colorobj;
};


/**
* @ returns a random number between min and max
* 
*/
function getRndInteger(min, max) {
    return Math.floor(Math.random() * (max - min + 1) ) + min;
};

JJMack · Answer

Why does it matter how you generate 3 random bytes.  The end result is 3 random hex bytes code. That code is represented differently as RGB values, HSB values,  Lab values, and CMYK  values.  It a random 3 byte value in the range 000000-FFFFFF, ie a random number 0 to 16,777,215.  In 8 Bit color depth the are 16,777,215 color settings. That Photoshop represents 5 ways Hex, RGB, HSB, Lab, CMYK. Set the ranges correctly.  function getRndInteger(min, max) {    return Math.floor(Math.random() * (max - min) ) + min;}   You may want to change hsv to hsb. After you set the random Foregroubd abd Background you can retrieve their HSB values. saveforeColor = new SolidColor;saveforeColor.hsb.brightness = app.foregroundColor.hsb.brightness;saveforeColor.hsb.hue = app.foregroundColor.hsb.hue;saveforeColor.hsb.saturation = app.foregroundColor.hsb.saturation;savebackColor = new SolidColor;savebackColor.hsb.brightness = app.backgroundColor.hsb.brightness;savebackColor.hsb.hue = app.backgroundColor.hsb.hue;savebackColor.hsb.saturation = app.backgroundColor.hsb.saturation;alert("Forground Color:"+ "
brightness " + saveforeColor.hsb.brightness + "
hue "  + saveforeColor.hsb.hue + "
saturation  " + saveforeColor.hsb.saturation + "

Background Color:"+ "
brightness " + savebackColor.hsb.brightness + "
hue "  + savebackColor.hsb.hue + "
saturation  " + savebackColor.hsb.saturation );

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