function getHexaFromHSV(hue, saturation, value) {
	var HSV = new HSVobject(hue, saturation, value);
	//HSV.validate();
	var RGB = HSV2RGB(HSV);
	var hex = RGB2hex(RGB);
	return hex; //#FF0000
}

function getRBGFromHSV(hue, saturation, value) {
	var HSV = new HSVobject(hue, saturation, value);
	//HSV.validate();
	var RGB = HSV2RGB(HSV);
	return RGB; //{r: 0.5, g: 0.5, b: 0.5}
}

function getHSVFromRGB(red, blue, green) {
	var RGB = new RGBobject(red, blue, green);
	var HSV = RGB2HSV(RGB);
	return HSV; //{h: 0.5, s: 0.5, v: 0.5}
}


function HSVobject(hue, saturation, value) {
	// Object definition.
	this.h = hue; this.s = saturation; this.v = value;
	//this.validate = function () { //ttt
		if (this.h <= 0) {this.h = 0;}
		if (this.s <= 0) {this.s = 0;}
		if (this.v <= 0) {this.v = 0;}
		if (this.h > 360) {this.h = 360;}
		if (this.s > 100) {this.s = 100;}
		if (this.v > 100) {this.v = 100;}
	//}; //ttt
}

function RGBobject(red, green, blue) {
	// Object definition.
	this.r = red; this.g = green; this.b = blue;
	//this.validate = function () { //ttt
		if (this.r <= 0) {this.r = 0;}
		if (this.g <= 0) {this.g = 0;}
		if (this.b <= 0) {this.b = 0;}
		if (this.r > 255) {this.r = 255;}
		if (this.g > 255) {this.g = 255;}
		if (this.b > 255) {this.b = 255;}
	//}; //ttt
}

function hexify(number) {
	var digits = '0123456789ABCDEF';
	var lsd = number % 16;
	var msd = (number - lsd) / 16;
	var hexified = digits.charAt(msd) + digits.charAt(lsd);
	return hexified;
}

function decimalize(hexNumber) {
	var digits = '0123456789ABCDEF';
	return ((digits.indexOf(hexNumber.charAt(0).toUpperCase()) * 16) + digits.indexOf(hexNumber.charAt(1).toUpperCase()));
}

function hex2RGB (colorString, RGB) {
	RGB.r = decimalize(colorString.substring(1,3));
	RGB.g = decimalize(colorString.substring(3,5));
	RGB.b = decimalize(colorString.substring(5,7));
}

function RGB2hex(RGB) {
	return "#" + hexify(RGB.r) + hexify(RGB.g) + hexify(RGB.b);
}

function RGB2HSV(RGB) {
	r = RGB.r / 255;
	g = RGB.g / 255;
	b = RGB.b / 255; // Scale to unity.
	
	var HSV = new HSVobject(0, 0, 0); //ttt

	var minVal = Math.min(r, g, b);
	var maxVal = Math.max(r, g, b);
	var delta = maxVal - minVal;

	HSV.v = maxVal;

	if (delta == 0) {
		HSV.h = 0;
		HSV.s = 0;
	} else {
		HSV.s = delta / maxVal;
		var del_R = (((maxVal - r) / 6) + (delta / 2)) / delta;
		var del_G = (((maxVal - g) / 6) + (delta / 2)) / delta;
		var del_B = (((maxVal - b) / 6) + (delta / 2)) / delta;

		if (r == maxVal) {HSV.h = del_B - del_G;}
		else if (g == maxVal) {HSV.h = (1 / 3) + del_R - del_B;}
		else if (b == maxVal) {HSV.h = (2 / 3) + del_G - del_R;}
		
		if (HSV.h < 0) {HSV.h += 1;}
		if (HSV.h > 1) {HSV.h -= 1;}
	}
	
	HSV.h *= 360;
	HSV.s *= 100;
	HSV.v *= 100;
	
	return HSV; //ttt
}

function HSV2RGB(HSV) {
	var h = HSV.h / 360;
	var s = HSV.s / 100;
	var v = HSV.v / 100;
	
	var RGB = new RGBobject(0, 0, 0); //ttt
	
	if (s == 0) {
		RGB.r = v * 255;
		RGB.g = v * 255;
		RGB.v = v * 255;
	} else {
		var_h = h * 6;
		var_i = Math.floor(var_h);
		var_1 = v * (1 - s);
		var_2 = v * (1 - s * (var_h - var_i));
		var_3 = v * (1 - s * (1 - (var_h - var_i)));
		
		if (var_i == 0) {var_r = v; var_g = var_3; var_b = var_1}
		else if (var_i == 1) {var_r = var_2; var_g = v; var_b = var_1}
		else if (var_i == 2) {var_r = var_1; var_g = v; var_b = var_3}
		else if (var_i == 3) {var_r = var_1; var_g = var_2; var_b = v}
		else if (var_i == 4) {var_r = var_3; var_g = var_1; var_b = v}
		else {var_r = v; var_g = var_1; var_b = var_2};
		
		RGB.r = var_r * 255;
		RGB.g = var_g * 255;
		RGB.b = var_b * 255;
	}
	
	return RGB; //ttt
}

/*
function rgbChange() {
	var RGB = new RGBobject(getObjectByID("rChannel").value, getObjectByID("gChannel").value, getObjectByID("bChannel").value);
	var HSV = new HSVobject(getObjectByID("hChannel").value, getObjectByID("sChannel").value, getObjectByID("vChannel").value);
	RGB.validate();
	RGB2HSV (RGB, HSV);
	getObjectByID("hexColor").value = RGB2hex(RGB);
	updateSwatch();
	getObjectByID("rChannel").value = Math.round(RGB.r);
	getObjectByID("gChannel").value = Math.round(RGB.g);
	getObjectByID("bChannel").value = Math.round(RGB.b);
	getObjectByID("hChannel").value = Math.round(HSV.h);
	getObjectByID("sChannel").value = Math.round(HSV.s);
	getObjectByID("vChannel").value = Math.round(HSV.v);
}

function hsvChange() {
	var RGB = new RGBobject(getObjectByID("rChannel").value, getObjectByID("gChannel").value, getObjectByID("bChannel").value);
	var HSV = new HSVobject(getObjectByID("hChannel").value, getObjectByID("sChannel").value, getObjectByID("vChannel").value);
	HSV.validate();
	HSV2RGB (HSV, RGB);
	getObjectByID("hexColor").value = RGB2hex(RGB);
	updateSwatch();
	getObjectByID("rChannel").value = Math.round(RGB.r);
	getObjectByID("gChannel").value = Math.round(RGB.g);
	getObjectByID("bChannel").value = Math.round(RGB.b);
	getObjectByID("hChannel").value = Math.round(HSV.h);
	getObjectByID("sChannel").value = Math.round(HSV.s);
	getObjectByID("vChannel").value = Math.round(HSV.v);
}

function hexChange() {
	var colorString = getObjectByID("hexColor").value;
	var RGB = new RGBobject(0,0,0);
	var HSV = new HSVobject(0,0,0);
	hex2RGB(colorString, RGB);
	RGB2HSV (RGB, HSV);
	getObjectByID("rChannel").value = Math.round(RGB.r);
	getObjectByID("gChannel").value = Math.round(RGB.g);
	getObjectByID("bChannel").value = Math.round(RGB.b);
	getObjectByID("hChannel").value = Math.round(HSV.h);
	getObjectByID("sChannel").value = Math.round(HSV.s);
	getObjectByID("vChannel").value = Math.round(HSV.v);
}

function updateSwatch() {
	getObjectByID("swatch").style.backgroundColor = getObjectByID("hexColor").value;
}

function RGB2HSV(RGB, HSV) {
	r = RGB.r / 255;
	g = RGB.g / 255;
	b = RGB.b / 255; // Scale to unity.

	var minVal = Math.min(r, g, b);
	var maxVal = Math.max(r, g, b);
	var delta = maxVal - minVal;

	HSV.v = maxVal;

	if (delta == 0) {
		HSV.h = 0;
		HSV.s = 0;
	} else {
		HSV.s = delta / maxVal;
		var del_R = (((maxVal - r) / 6) + (delta / 2)) / delta;
		var del_G = (((maxVal - g) / 6) + (delta / 2)) / delta;
		var del_B = (((maxVal - b) / 6) + (delta / 2)) / delta;

		if (r == maxVal) {HSV.h = del_B - del_G;}
		else if (g == maxVal) {HSV.h = (1 / 3) + del_R - del_B;}
		else if (b == maxVal) {HSV.h = (2 / 3) + del_G - del_R;}
		
		if (HSV.h < 0) {HSV.h += 1;}
		if (HSV.h > 1) {HSV.h -= 1;}
	}
	HSV.h *= 360;
	HSV.s *= 100;
	HSV.v *= 100;
}

function HSV2RGB(HSV, RGB) {
	var h = HSV.h / 360;
	var s = HSV.s / 100;
	var v = HSV.v / 100;
	
	if (s == 0) {
		RGB.r = v * 255;
		RGB.g = v * 255;
		RGB.v = v * 255;
	} else {
		var_h = h * 6;
		var_i = Math.floor(var_h);
		var_1 = v * (1 - s);
		var_2 = v * (1 - s * (var_h - var_i));
		var_3 = v * (1 - s * (1 - (var_h - var_i)));
		
		if (var_i == 0) {var_r = v; var_g = var_3; var_b = var_1}
		else if (var_i == 1) {var_r = var_2; var_g = v; var_b = var_1}
		else if (var_i == 2) {var_r = var_1; var_g = v; var_b = var_3}
		else if (var_i == 3) {var_r = var_1; var_g = var_2; var_b = v}
		else if (var_i == 4) {var_r = var_3; var_g = var_1; var_b = v}
		else {var_r = v; var_g = var_1; var_b = var_2};
		
		RGB.r = var_r * 255;
		RGB.g = var_g * 255;
		RGB.b = var_b * 255;
	}
}
*/