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functions:llsetalpha [2014-01-03 14:18 SLT] omei created |
functions:llsetalpha [2015-02-04 17:57 SLT] (current) sei See Also: +llSet[Link]Texture |
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| + | $nav | ||
| ===== Function: llSetAlpha ===== | ===== Function: llSetAlpha ===== | ||
| <code lsl2> | <code lsl2> | ||
| - | null llSetAlpha(float alpha, integer face) | + | llSetAlpha(float alpha, integer face) |
| </code> | </code> | ||
| + | Sets the opacity (also called alpha) of a face or all faces of the current prim. | ||
| ===== Parameters ===== | ===== Parameters ===== | ||
| Line 11: | Line 13: | ||
| === face === | === face === | ||
| - | An integer value defining the face of the prim to be affected. ALL_SIDES affects all faces. | + | $faceparam |
| - | + | ||
| - | ===== Result ===== | + | |
| - | + | ||
| - | No result is returned | + | |
| ===== Notes ===== | ===== Notes ===== | ||
| - | This function ONLY affects the prim the script is in. To change the alpha on another prim, use llSetLinkAlpha. | + | * This function ONLY affects the prim the script is in. To change the alpha on another prim, use $lfn[llSetLinkAlpha]. |
| + | * Note that the viewer shows transparency, not opacity, and it shows it in percentage. To convert from viewer transparency to an alpha value suitable for use with this function, use this formula: //alpha//=(100-//transparency//)/100. For example, a transparency of 35% is an alpha value of 0.65. | ||
| ===== Short examples ===== | ===== Short examples ===== | ||
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| state_entry() | state_entry() | ||
| { | { | ||
| - | llSetAlpha(0.0, 1); // Will make face 1 of this prim go transparent | + | llSetAlpha(0.0, 2); // Will make face 2 of this prim go transparent |
| } | } | ||
| } | } | ||
| Line 41: | Line 40: | ||
| ===== See also ===== | ===== See also ===== | ||
| - | * [[llSetLinkAlpha]] | + | * $lfn[llSetLinkAlpha] to change the opacity on any chosen prim in the current object. |
| + | * $lfn[llSetColor] to set the color of a face in the current prim, or $lfn[llSetLinkColor] to set it for any chosen prim. | ||
| + | * The $lfn[PrimitiveParams/|PrimitiveParams] family of functions, with $lct[PRIM_COLOR], allows changing color and alpha at the same time. | ||
| + | * $lfn[llSetTexture] and $lfn[llSetLinkTexture] can also be used to change the texture to $lct[TEXTURE_TRANSPARENT]. | ||