URGB2HSL - Revision history

ObviousAltIsObvious Resident: tag to

2015-01-22T22:34:35Z

← Older revision		Revision as of 15:34, 22 January 2015
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	* LSO: 502 bytes		* LSO: 502 bytes
	* MONO: 1536 bytes		* MONO: 1536 bytes
	<~~lsl~~>vector uRGB2HSL( vector vColRGB ){		<source lang="lsl2">vector uRGB2HSL( vector vColRGB ){
	vector vColHSL = vColRGB;		vector vColHSL = vColRGB;
	if (vColHSL.x < vColHSL.y){		if (vColHSL.x < vColHSL.y){
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	/// 2011 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] ///		/// 2011 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] ///
	/// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] ///		/// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] ///
	///-- --///</~~lsl~~><!-- Please do not remove license statement -->		///-- --///</source><!-- Please do not remove license statement -->
	}}		}}

Void Singer: ~correction of stupid mistake

2011-12-17T03:28:56Z

~correction of stupid mistake

← Older revision		Revision as of 20:28, 16 December 2011
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	\|content=		\|content=
	* To convert RGB or HSL values from other software to percentage based, simply divide each value by it's range		* To convert RGB or HSL values from other software to percentage based, simply divide each value by it's range
	** ~~for RGB the~~ range is ~~usually [0, 255] which is 256 (0 counts as a possible value)~~		** range is determined by subtracting the lower bound from the upper bound.
	** for HSL the ~~range of H is usually [0,360) (360 = 0) so~~ the ~~total range is 360 (since 360 overlaps)~~
	* To convert RGB or HSL percentages to your preferred format, multiply the value by the preferred range.		* To convert RGB or HSL percentages to your preferred format, multiply the value by the preferred range.
	}}		}}

Void Singer: new

2011-12-17T03:15:30Z

new

New page

{{LSL Header|[[:Category:LSL_User-Defined_Functions|User-Defined Functions]]|[[User:Void_Singer|Void's User Page]]}} 
<div style="float:right;">__TOC__</div>
{{DISPLAYTITLE:uRGB2HSL}}
{{void-box
|title=<div id="box" style="display:none"><h2>Summary</h2></div>[[:Category:LSL_User-Defined_Functions|User-Defined Function]]: [[vector]] uRGB2HSL( [[vector]] ''vColRGB'' );
|content=
Returns a percentage based vector that is ''vColRGB'' converted to a HSL.
* ''vColRGB'': source color as percentages of range.

'''Code:'''
* LSO: 502 bytes
* MONO: 1536 bytes
<lsl>vector uRGB2HSL( vector vColRGB ){
vector vColHSL = vColRGB;
if (vColHSL.x < vColHSL.y){
vColHSL = <vColHSL.y, vColHSL.x, vColHSL.z>;
}
if (vColHSL.x < vColHSL.z){
vColHSL = <vColHSL.z, vColHSL.y, vColHSL.x>;
}else if (vColHSL.y > vColHSL.z){
vColHSL = <vColHSL.x, vColHSL.z, vColHSL.y>;
}
vColHSL.z = (vColHSL.x + vColHSL.y) * 0.5; //-- L
vColHSL.y = vColHSL.x - vColHSL.y; //-- C
if (vColHSL.y){
vColHSL.x = llList2Float( [(vColRGB.y - vColRGB.z) / vColHSL.y + 6.0 * (vColRGB.z > vColRGB.y),
(vColRGB.z - vColRGB.x) / vColHSL.y + 2.0,
(vColRGB.x - vColRGB.y) / vColHSL.y + 4.0],
llListFindList( [vColRGB.x, vColRGB.y, vColRGB.z], (list)vColHSL.x ) ) / 6.0; //-- H
vColHSL.y = vColHSL.y / llList2Float( [2.0 * vColHSL.z, 2.0 - 2.0 * vColHSL.z], vColHSL.z > 0.5 ); //-- S
}else{
vColHSL.x = vColHSL.y; //-- Greyscale
}
return vColHSL;
}
/*//-- Anti-License Text --//*/
/*// Contributed Freely to the Public Domain without limitation. //*/
/*// 2011 (CC0) [ http://creativecommons.org/publicdomain/zero/1.0 ] //*/
/*// Void Singer [ https://wiki.secondlife.com/wiki/User:Void_Singer ] //*/
/*//-- --//*/</lsl>
}}

{{void-box
|title=Caveats
|content=
* This function does not check input RGB validity. See [[uRGB2HSL#Articles|Articles]] below
* HSL is kept percentage based here for best compatibility with image mapping
* HSL color vectors may not be set directly
}}

{{void-box
|title=Notes
|content=
* To convert RGB or HSL values from other software to percentage based, simply divide each value by it's range
** for RGB the range is usually [0, 255] which is 256 (0 counts as a possible value)
** for HSL the range of H is usually [0,360) (360 = 0) so the total range is 360 (since 360 overlaps)
* To convert RGB or HSL percentages to your preferred format, multiply the value by the preferred range.
}}

{{void-box
|title=See Also
|content=
=== Functions ===
* [[uHSL2RGB]]
* [[llGetColor]]
* [[llGetPrimitiveParams]]
* [[llGetLinkPrimitiveParams]]
=== Articles ===
* [[:Category:LSL_Color|Color in LSL]]
}}
[[Category:LSL_User-Defined_Functions|RGB2HSL|uRGB2HSL]]
[[Category:LSL_Color|RGB2HSL|uRGB2HSL]]