Difference between revisions of "Category:LSL Color"

Revision as of 07:03, 1 March 2007

Color in LSL

LSL has it's own special format for color. LSL uses a vector to store color. Unlike traditional RGB where each channel is 0 -> 255, LSL's color channels are 0 -> 1.

Format: <R, G, B>

• float	x	–	Red value	[0, 1]
• float	y	–	Green value	[0, 1]
• float	z	–	Blue value	[0, 1]

Examples

vector white = <1.0, 1.0, 1.0>;
vector red = <1.0, 0.0, 0.0>;
vector green = <0.0, 1.0, 0.0>;
vector blue = <0.0, 0.0, 1.0>;
vector grey = <0.5, 0.5, 0.5>;
vector black = <0.0, 0.0, 0.0>;

Useful Snippets

Useful functions for storing/retrieving color and alpha values to/from integers

integer ColorAlphatoRGBA(vector color, float alpha) {
	return (((integer)(alpha * 255.0) & 0xFF) << 24) |
		(((integer)(color.x * 255.0) & 0xFF) << 16) |
		(((integer)(color.y * 255.0) & 0xFF) << 8) |
		((integer)(color.z * 255.0) & 0xFF);
}

vector RGBAtoColor(integer rgba) {
	return < ((rgba >> 16) & 0xFF) / 255.0, ((rgba >> 8) & 0xFF) / 255.0, (rgba & 0xFF) / 255.0 >;
}

float RGBAtoAlpha(integer rgba) {
	return ((rgba >> 24) & 0xFF) / 255.0;
}

Pages in category "LSL Color"

The following 27 pages are in this category, out of 27 total.

@@ Line 1: / Line 1: @@
-{{LSL Header}}
+{{LSL Header
-Color is specified in LSL as a vector of the red, green and blue values between 0.0 and 1.0.
+}}{{#vardefine:header_title|Color in LSL
+}}{{#vardefine:header_text|LSL has it's own special format for color. LSL uses a [[vector]] to store color. Unlike traditional RGB where each channel is 0 -&gt; 255, LSL's color channels are 0 -&gt; 1.<br/>
+===Format: {{LSL VR|'''R'''|'''G'''|'''B'''}}===
+{{{!}}
+{{LSL DefineRow|float|x|Red value|[0, 1]}}
+{{LSL DefineRow|float|y|Green value|[0, 1]}}
+{{LSL DefineRow|float|z|Blue value|[0, 1]}}
+{{!}}}
-'''Example'''
+}}{{#vardefine:helpers|
-<lsl>
+===Useful functions for storing/retrieving color and alpha values to/from integers===
- vector myColor = <1.0,0.1,0.7>;
+<pre>
-</lsl>
+integer ColorAlphatoRGBA(vector color, float alpha) {
-would be 100% red scale, 10% green, and 70% blue combined to make a single color.
+	return (((integer)(alpha * 255.0) & 0xFF) << 24) |
+		(((integer)(color.x * 255.0) & 0xFF) << 16) |
+		(((integer)(color.y * 255.0) & 0xFF) << 8) |
+		((integer)(color.z * 255.0) & 0xFF);
+}
+vector RGBAtoColor(integer rgba) {
+	return < ((rgba >> 16) & 0xFF) / 255.0, ((rgba >> 8) & 0xFF) / 255.0, (rgba & 0xFF) / 255.0 >;
+}
+float RGBAtoAlpha(integer rgba) {
+	return ((rgba >> 24) & 0xFF) / 255.0;
+}</pre>
+}}{{#vardefine:examples|
+<pre>
+vector white = <1.0, 1.0, 1.0>;
+vector red = <1.0, 0.0, 0.0>;
+vector green = <0.0, 1.0, 0.0>;
+vector blue = <0.0, 0.0, 1.0>;
+vector grey = <0.5, 0.5, 0.5>;
+vector black = <0.0, 0.0, 0.0>;
+</pre>
+}}{{LSL Generic}}