Difference between revisions of "Category:LSL Color"
Jump to navigation
Jump to search
m (fixed typo reasone) |
m (comment isn't strictly needed.) |
||
| Line 15: | Line 15: | ||
===Useful functions for storing/retrieving color and alpha values to/from integers=== | ===Useful functions for storing/retrieving color and alpha values to/from integers=== | ||
<lsl>integer ColorAlphatoRGBA(vector color, float alpha) { | <lsl>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) { | vector RGBAtoColor(integer rgba) { | ||
return < (rgba >> 16) & 0xFF, (rgba >> 8) & 0xFF, (rgba & 0xFF) > / 255.0; | |||
} | } | ||
float RGBAtoAlpha(integer rgba) { | float RGBAtoAlpha(integer rgba) { | ||
return ((rgba >> 24) & 0xFF) / 255.0; | |||
}</lsl> | }</lsl> | ||
}} | }} | ||
{{#vardefine:examples| | {{#vardefine:examples| | ||
<lsl>vector white = <1.0, 1.0, 1.0>; | <lsl>vector white = <1.0, 1.0, 1.0>; | ||
vector grey = <0.5, 0.5, 0.5>; | vector grey = <0.5, 0.5, 0.5>; | ||
vector black = <0.0, 0.0, 0.0>; | vector black = <0.0, 0.0, 0.0>; | ||
vector red = <1.0, 0.0, 0.0>; | vector red = <1.0, 0.0, 0.0>; | ||
vector green = <0.0, 1.0, 0.0>; | vector green = <0.0, 1.0, 0.0>; | ||
vector blue = <0.0, 0.0, 1.0>; | vector blue = <0.0, 0.0, 1.0>; | ||
vector yellow = <1.0, 1.0, 0.0>; | vector yellow = <1.0, 1.0, 0.0>; | ||
vector cyan = <0.0, 1.0, 1.0>; | vector cyan = <0.0, 1.0, 1.0>; | ||
vector magenta = <1.0, 0.0, 1.0>;</lsl> | vector magenta = <1.0, 0.0, 1.0>;</lsl> | ||
}} | }} | ||
Revision as of 11:39, 2 July 2009
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Color in LSL
Color in LSLLSL 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)
Pages in category "LSL Color"
The following 27 pages are in this category, out of 27 total.