Difference between revisions of "Category:LSL Color"

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(oh god this needs to be reworked o_o)
m (parentheses needed are around the Z part of the RGBAtoColor return value)
Line 22: Line 22:


vector RGBAtoColor(integer rgba) {
vector RGBAtoColor(integer rgba) {
return < (rgba >> 16) & 0xFF, (rgba >> 8) & 0xFF, rgba & 0xFF > / 255.0;
return < (rgba >> 16) & 0xFF, (rgba >> 8) & 0xFF, (rgba & 0xFF) > / 255.0; // for some reasone parentheses are needed around the Z part
}
}



Revision as of 05:32, 2 July 2009

Color in LSL

Color in LSL

LSL has its 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

<lsl>vector white = <1.0, 1.0, 1.0>; vector grey = <0.5, 0.5, 0.5>; vector black = <0.0, 0.0, 0.0>; 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 yellow = <1.0, 1.0, 0.0>; vector cyan = <0.0, 1.0, 1.0>; vector magenta = <1.0, 0.0, 1.0>;</lsl>

Useful Snippets

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

<lsl>integer ColorAlphatoRGBA(vector color, float alpha) { return (((integer)(alpha * 255.0) & 0xFF) << 24)