Difference between revisions of "LlGetAlpha"
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|constants | |constants | ||
|examples= | |examples= | ||
< | <source lang="lsl2">//Tells the owner the alpha on all sides | ||
default | default | ||
{ | { | ||
| Line 26: | Line 26: | ||
} | } | ||
} | } | ||
}</ | }</source> | ||
|helpers= | |helpers= | ||
< | <source lang="lsl2">float AveragePrimAlpha() | ||
{//Since this is so simple you may just want to inline it instead of including the function. | {//Since this is so simple you may just want to inline it instead of including the function. | ||
return (llGetAlpha(ALL_SIDES) / llGetNumberOfSides()); | return (llGetAlpha(ALL_SIDES) / llGetNumberOfSides()); | ||
}</ | }</source> | ||
|also_functions= | |also_functions= | ||
{{LSL DefineRow||[[llSetAlpha]]|Sets the prim's alpha}} | {{LSL DefineRow||[[llSetAlpha]]|Sets the prim's alpha}} | ||
Revision as of 01:36, 22 January 2015
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Caveats
- If face indicates a face that does not exist the return is 1.0
Examples
//Tells the owner the alpha on all sides
default
{
state_entry()
{
integer i = 0;
integer max = llGetNumberOfSides();
while(i < max)
{
llSay(0,"Face "+(string)i+" alpha is " + (string)llGetAlpha(i));
++i;
}
}
}
Useful Snippets
float AveragePrimAlpha()
{//Since this is so simple you may just want to inline it instead of including the function.
return (llGetAlpha(ALL_SIDES) / llGetNumberOfSides());
}
See Also
Functions
| • | llSetAlpha | – | Sets the prim's alpha | |
| • | llGetColor | – | Gets the prim's color | |
| • | llSetColor | – | Sets the prim's color | |
| • | llSetLinkColor | – | Sets link's color | |
| • | llSetLinkAlpha | – | Sets link's alpha | |
| • | llGetNumberOfSides | – | Gets the number of faces on the prim |
Articles
| • | Translucent Color |
Deep Notes
Rounding
Alpha is stored in a single 8-bit byte, meaning there are 256 values that are possible. Consequently the values returned by this function are all multiples of 1/255. When the alpha value is initially stored the float value is rounded to the nearest multiple, turning 0.5 into 128/255 for example.
Footnotes
- ^ The ranges in this article are written in Interval Notation.
Signature |
|---|
function float llGetAlpha( integer face ); |