LlSetLinkAlpha - Revision history

Tapple Gao: invisible typo

2026-03-22T22:45:59Z

invisible typo

← Older revision		Revision as of 15:45, 22 March 2026
Line 14:		Line 14:
	** invisible <source lang="lsl2">		** invisible <source lang="lsl2">
	if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {		if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {
	llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, PRIM_GLTF_ALPHA_MODE_BLEND, OVERRIDE_GLTF_BASE_ALPHA, 1.0)]);		llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, PRIM_GLTF_ALPHA_MODE_BLEND, OVERRIDE_GLTF_BASE_ALPHA, 0.0)]);
	} else {		} else {
	llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);		llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);

Tapple Gao: Visible/Invisible pbr caveats were swapped

2026-03-22T22:44:27Z

Visible/Invisible pbr caveats were swapped

← Older revision		Revision as of 15:44, 22 March 2026
Line 14:		Line 14:
	** invisible <source lang="lsl2">		** invisible <source lang="lsl2">
	if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {		if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {
	llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, "", OVERRIDE_GLTF_BASE_ALPHA, "")]);		llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, PRIM_GLTF_ALPHA_MODE_BLEND, OVERRIDE_GLTF_BASE_ALPHA, 1.0)]);
	} else {		} else {
	llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);		llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);
Line 21:		Line 21:
	** visible <source lang="lsl2">		** visible <source lang="lsl2">
	if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {		if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {
	llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, ~~PRIM_GLTF_ALPHA_MODE_BLEND~~, OVERRIDE_GLTF_BASE_ALPHA, ~~1.0~~)]);		llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, "", OVERRIDE_GLTF_BASE_ALPHA, "")]);
	} else {		} else {
	llSetLinkAlpha(LINK_THIS, 1.0, ALL_SIDES);		llSetLinkAlpha(LINK_THIS, 1.0, ALL_SIDES);

Tapple Gao: whitespace

2026-03-22T22:39:49Z

whitespace

← Older revision		Revision as of 15:39, 22 March 2026
Line 17:		Line 17:
	} else {		} else {
	llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);		llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);

	}		}
	</source>		</source>

Tapple Gao: llSetLinkGLTFOverrides in the PBR caveat now that it exists

2026-03-22T22:39:29Z

llSetLinkGLTFOverrides in the PBR caveat now that it exists

← Older revision		Revision as of 15:39, 22 March 2026
Line 13:		Line 13:
	* llSetLinkAlpha will have no visible effect on faces with a PBR material. To work on faces both with and without a PBR material, use one of these snippets:		* llSetLinkAlpha will have no visible effect on faces with a PBR material. To work on faces both with and without a PBR material, use one of these snippets:
	** invisible <source lang="lsl2">		** invisible <source lang="lsl2">
	~~llSetLinkAlpha~~(LINK_THIS~~, 0.0~~, ALL_SIDES);		if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {
	~~llSetLinkPrimitiveParamsFast~~(LINK_THIS~~, [PRIM_GLTF_BASE_COLOR~~, ALL_SIDES, "", "", ~~"", ""~~, "", 0.0, ~~PRIM_GLTF_ALPHA_MODE_MASK, 1.0, ""]~~);		llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, "", OVERRIDE_GLTF_BASE_ALPHA, "")]);
			} else {
			llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);

			}
	</source>		</source>
	** visible <source lang="lsl2">		** visible <source lang="lsl2">
	~~llSetLinkAlpha~~(LINK_THIS~~, 1.0~~, ALL_SIDES);		if (llIsLinkGLTFMaterial(LINK_THIS, ALL_SIDES)) {
	~~llSetLinkPrimitiveParamsFast~~(LINK_THIS~~, [PRIM_GLTF_BASE_COLOR~~, ALL_SIDES, "", "", "", "", "", ~~"", "", "", ""]~~);		llSetLinkGLTFOverrides(LINK_THIS, ALL_SIDES, [OVERRIDE_GLTF_BASE_ALPHA_MODE, PRIM_GLTF_ALPHA_MODE_BLEND, OVERRIDE_GLTF_BASE_ALPHA, 1.0)]);
			} else {
			llSetLinkAlpha(LINK_THIS, 1.0, ALL_SIDES);
			}
	</source>		</source>
	\|constants		\|constants

Tapple Gao: add caveats about PBR

2024-12-11T23:19:47Z

add caveats about PBR

← Older revision		Revision as of 16:19, 11 December 2024
Line 10:		Line 10:
	\|return_text		\|return_text
	\|spec		\|spec
	\|caveats		\|caveats=
			* llSetLinkAlpha will have no visible effect on faces with a PBR material. To work on faces both with and without a PBR material, use one of these snippets:
			** invisible <source lang="lsl2">
			llSetLinkAlpha(LINK_THIS, 0.0, ALL_SIDES);
			llSetLinkPrimitiveParamsFast(LINK_THIS, [PRIM_GLTF_BASE_COLOR, ALL_SIDES, "", "", "", "", "", 0.0, PRIM_GLTF_ALPHA_MODE_MASK, 1.0, ""]);
			</source>
			** visible <source lang="lsl2">
			llSetLinkAlpha(LINK_THIS, 1.0, ALL_SIDES);
			llSetLinkPrimitiveParamsFast(LINK_THIS, [PRIM_GLTF_BASE_COLOR, ALL_SIDES, "", "", "", "", "", "", "", "", ""]);
			</source>
	\|constants		\|constants
	\|examples=		\|examples=
Line 116:		Line 125:
	{{LSL DefineRow\|\|[[llSetLinkTexture]]\|}}		{{LSL DefineRow\|\|[[llSetLinkTexture]]\|}}
	{{LSL DefineRow\|\|[[llSetLinkPrimitiveParams]]\|}}		{{LSL DefineRow\|\|[[llSetLinkPrimitiveParams]]\|}}
			{{LSL DefineRow\|\|[[PRIM_COLOR]]\|The equivilant parameter for [[llSetPrimitiveParams]]}}
			{{LSL DefineRow\|\|[[PRIM_GLTF_BASE_COLOR]]\|The equivilant PBR parameter for [[llSetPrimitiveParams]]}}
	\|also_tests		\|also_tests
	\|also_events={{LSL DefineRow\|\|[[changed]]\|[[CHANGED_COLOR]]}}		\|also_events={{LSL DefineRow\|\|[[changed]]\|[[CHANGED_COLOR]]}}

Jenna Huntsman: Add Blinn-Phong terminology to page following PBR release.

2023-12-01T20:25:55Z

Add Blinn-Phong terminology to page following PBR release.

← Older revision		Revision as of 13:25, 1 December 2023
Line 7:		Line 7:
	\|p3_type=integer\|p3_name=face		\|p3_type=integer\|p3_name=face
	\|func_footnote		\|func_footnote
	\|func_desc=If a prim exists in the link set at {{LSLP\|link}}, set {{LSLP\|alpha}} on {{LSLP\|face}} of that prim.		\|func_desc=If a prim exists in the link set at {{LSLP\|link}}, set the [[PBR_Materials#Nomenclature_changes\|Blinn-Phong]] {{LSLP\|alpha}} on {{LSLP\|face}} of that prim.
	\|return_text		\|return_text
	\|spec		\|spec

Lady Sumoku: Replaced old block with

2015-01-22T21:34:10Z

Replaced old <LSL> block with <source lang="lsl2">

← Older revision		Revision as of 14:34, 22 January 2015
Line 13:		Line 13:
	\|constants		\|constants
	\|examples=		\|examples=
	<~~lsl~~>		<source lang="lsl2">
	// Make the entire object disappear for 5 seconds		// Make the entire object disappear for 5 seconds

Line 32:		Line 32:
	}		}
	}		}
	</~~lsl~~>		</source>
	<~~lsl~~>		<source lang="lsl2">
	// when the object is touched,		// when the object is touched,
	// fade it out and back in again		// fade it out and back in again
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	}		}
	}		}
	</~~lsl~~>		</source>
	<~~lsl~~>		<source lang="lsl2">
	// Makes selected prims in a linkset become transparent or visible on chat command. Give each prim a unique name.		// Makes selected prims in a linkset become transparent or visible on chat command. Give each prim a unique name.

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	}		}
	}		}
	</~~lsl~~>		</source>
	\|helpers		\|helpers
	\|also_functions=		\|also_functions=

Strife Onizuka at 08:16, 25 December 2013

2013-12-25T08:16:25Z

← Older revision		Revision as of 01:16, 25 December 2013
Line 3:		Line 3:
	\|func_id=274\|func_sleep=0.0\|func_energy=10.0		\|func_id=274\|func_sleep=0.0\|func_energy=10.0
	\|func=llSetLinkAlpha		\|func=llSetLinkAlpha
	\|p1_type=integer\|p1_name=link		\|p1_type=integer\|p1_subtype=link\|p1_name=link
	\|p2_type=float\|p2_name=alpha		\|p2_type=float\|p2_name=alpha
	\|p3_type=integer\|p3_name=face		\|p3_type=integer\|p3_name=face

Omei Qunhua: Abbreviate 3rd example

2012-12-28T11:24:52Z

Abbreviate 3rd example

← Older revision		Revision as of 04:24, 28 December 2012
Line 61:		Line 61:
	// Makes selected prims in a linkset become transparent or visible on chat command. Give each prim a unique name.		// Makes selected prims in a linkset become transparent or visible on chat command. Give each prim a unique name.

	list PrimList;		list PrimList = ["ALL"];
			// Start our prim list with a dummy entry, so that the index into this list will correspond directly to the link number
			// By making the dummy entry 'ALL' we provide a match for that option too

	default		default
	{		{
	changed (integer change)		changed (integer change)
	{		{
	if (change & CHANGED_LINK)		if (change & CHANGED_LINK)
	llResetScript();		llResetScript();
	}		}

	state_entry()		state_entry()
	{		{
	integer ~~NumLink~~ = llGetNumberOfPrims();		integer PrimCount = llGetNumberOfPrims();
			llListen(37, "", NULL_KEY, ""); // listen to chat commands from anyone on channel 37
	llListen(37, "", NULL_KEY, "");		integer i;
			for (i = 1; i <= PrimCount; ++i)
	integer i;		PrimList += llToUpper(llGetLinkName(i) ); // Build a list of upper-case link names, where list position equals link number
	for (i = 1; i <= ~~NumLink~~; ++i)
	PrimList += llGetLinkName(i);
	}		}

	listen(integer channel, string name, key id, string msg)		listen(integer channel, string name, key id, string msg)
	{		{
	list ~~temp~~ = llCSV2List(msg);		list TempList = llCSV2List( llToUpper(msg) ); // make a list from upper-case version of user command line
	integer ~~len~~ = llGetListLength (~~temp~~);		integer ListLen = llGetListLength (TempList);
	~~string Alpha~~ = ~~llToUpper~~(llList2String(~~temp~~, 0));		integer alpha = (llList2String(TempList, 0) == "SHOW");
			// 'SHOW' sets selected prims visible, otherwise set them transparent
	~~integer i;~~		// e.g. HIDE,PLATE,SPOON,NAPKIN <---- makes named prims invisible
	~~for (i~~ = ~~1; i < len; ++i)~~		// e.g. SHOW,ALL <---- makes all prims visible
	{
	~~string ThisPrim~~ = ~~llStringTrim(llList2String(temp, i), STRING_TRIM~~);
	~~integer idx = llListFindList(PrimList, [ThisPrim]);~~
	~~if (~idx)~~
	{
	//~~Ex:~~ SHOW~~,plate,spoon, napkin <---- makes named~~ prims visible
	~~if (Alpha == "SHOW")~~
	~~llSetLinkAlpha(idx + 1~~, ~~1.0, ALL_SIDES);~~

	//~~Ex:~~ HIDE, ~~butter knife~~, ~~glass~~, ~~fork, spoon~~ <--- makes named prims ~~transparent~~
	~~else if (Alpha == "HIDE")~~
	~~llSetLinkAlpha(idx + 1, 0.0, ALL_SIDES);~~
	}
	~~else if (llToUpper(ThisPrim) == "ALL")~~
	{
	//~~Ex:~~ SHOW, ALL <--- makes ~~the entire linkset~~ visible
	~~if (Alpha == "SHOW")~~
	~~llSetLinkAlpha(LINK_SET, 1.0, ALL_SIDES);~~

	~~//Ex: HIDE, All <--- makes the entire linkset transparent~~		integer i;
	~~else if~~ (~~Alpha~~ == ~~"HIDE"~~)		for (i = 1; i < ListLen; ++i)
	~~llSetLinkAlpha~~(~~LINK_SET~~, 0.~~0, ALL_SIDES~~);		{
			string ThisPrim = llStringTrim(llList2String(TempList, i), STRING_TRIM);
			integer LinkNumber = llListFindList(PrimList, [ThisPrim]);
			if (~LinkNumber) // i.e. if LinkNumber != -1
			{
			if (!LinkNumber)
			LinkNumber = LINK_SET; // list position 0 is 'ALL'

	}		llSetLinkAlpha(LinkNumber, alpha, ALL_SIDES);
			}
	}		}
	}		}
	}		}

Omei Qunhua: Corrected 2nd example script which had been left in a non-compilable state... (float) TRUE and (float) FALSE are just HORRIBLE! ... Removed superfluous code.

2012-12-13T21:43:31Z

Corrected 2nd example script which had been left in a non-compilable state... (float) TRUE and (float) FALSE are just HORRIBLE! ... Removed superfluous code.

← Older revision		Revision as of 14:43, 13 December 2012
Line 34:		Line 34:
	</lsl>		</lsl>
	<lsl>		<lsl>
	// when the object ~~was~~ touched		// when the object is touched,
	// fade it out and back in again		// fade it out and back in again

Line 41:		Line 41:
	touch_start(integer num_detected)		touch_start(integer num_detected)
	{		{
	~~// set whole object opaque (full alpha)~~
	~~llSetLinkAlpha(LINK_SET, (float)TRUE, ALL_SIDES);~~

	// fade out		// fade out
	float alpha = 1.0;		float alpha = 1.0;
	while (0.0 ~~< alpha~~)		while (alpha >= 0.0)
	{		{
			llSetLinkAlpha(LINK_SET, alpha, ALL_SIDES);
	alpha -= 0.001;		alpha -= 0.001;
	~~llSetLinkAlpha(LINK_SET, alpha, ALL_SIDES);~~
	}		}
	~~// set whole object transparent (zero alpha)~~
	~~llSetLinkAlpha(LINK_SET, (float)FALSE, ALL_SIDES;~~

	// fade in		// fade in
	~~alpha = 0.0;~~
	while (alpha < 1.0)		while (alpha < 1.0)
	{		{
Line 61:		Line 55:
	llSetLinkAlpha(LINK_SET, alpha, ALL_SIDES);		llSetLinkAlpha(LINK_SET, alpha, ALL_SIDES);
	}		}
	~~// set whole object opaque (full alpha)~~
	~~llSetLinkAlpha(LINK_SET, (float)TRUE, ALL_SIDES);~~
	}		}
	}		}

← Older revision		Revision as of 01:16, 25 December 2013
Line 3:		Line 3:
	\|func_id=274\|func_sleep=0.0\|func_energy=10.0		\|func_id=274\|func_sleep=0.0\|func_energy=10.0
	\|func=llSetLinkAlpha		\|func=llSetLinkAlpha
	\|p1_type=integer\|p1_name=link		\|p1_type=integer\|p1_subtype=link\|p1_name=link
	\|p2_type=float\|p2_name=alpha		\|p2_type=float\|p2_name=alpha
	\|p3_type=integer\|p3_name=face		\|p3_type=integer\|p3_name=face