LlScaleByFactor - Revision history

ObviousAltIsObvious Resident: tag to

2015-01-22T21:42:44Z

← Older revision		Revision as of 14:42, 22 January 2015
Line 16:		Line 16:
	\|constants		\|constants
	\|examples=		\|examples=
	<~~lsl~~>// Touching this script causes the object to double or halve in size.		<source lang="lsl2">// Touching this script causes the object to double or halve in size.

	integer growing;		integer growing;
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	if (!success) llSay(PUBLIC_CHANNEL, "Scaling failed!");		if (!success) llSay(PUBLIC_CHANNEL, "Scaling failed!");
	}		}
	}</~~lsl~~>		}</source>
	\|helpers		\|helpers
	\|also_functions=		\|also_functions=
Line 60:		Line 60:
	\|cat5		\|cat5
	\|deepnotes=This function is roughly equivalent to the following:		\|deepnotes=This function is roughly equivalent to the following:
	<~~lsl~~>		<source lang="lsl2">
	float VectorAbsStatistics(integer flag, vector a){		float VectorAbsStatistics(integer flag, vector a){
	return llListStatistics(flag, [llFabs(a.x), llFabs(a.y), llFabs(a.z)]);		return llListStatistics(flag, [llFabs(a.x), llFabs(a.y), llFabs(a.z)]);
Line 105:		Line 105:
	return TRUE;		return TRUE;
	}		}
	</~~lsl~~>		</source>
	\|history=		\|history=
	*Mentioned in [[Simulator_User_Group/Transcripts/2013.12.10]]		*Mentioned in [[Simulator_User_Group/Transcripts/2013.12.10]]
	*Mentioned in [[Simulator_User_Group/Transcripts/2013.12.17]]		*Mentioned in [[Simulator_User_Group/Transcripts/2013.12.17]]
	}}		}}

Kireji Haiku: break lines for better readability on lower resolution screens

2014-01-07T01:33:14Z

break lines for better readability on lower resolution screens

← Older revision		Revision as of 18:33, 6 January 2014
Line 16:		Line 16:
	\|constants		\|constants
	\|examples=		\|examples=
	<lsl>// Touching this script causes the object to double or halve in size.		<lsl>// Touching this script causes the object to double or halve in size.
	integer growing ~~= FALSE~~;
			integer growing;

	default		default
	{		{
	state_entry()		state_entry()
	{		{
	llSay(0, "Touch to toggle scale");		llSay(PUBLIC_CHANNEL, "Touch to toggle scale.");
	}		}

	touch_start(integer ~~total_number~~)		touch_start(integer num_detected)
	{		{
			growing = !growing;

	float min_factor = llGetMinScaleFactor();		float min_factor = llGetMinScaleFactor();
	float max_factor = llGetMaxScaleFactor();		float max_factor = llGetMaxScaleFactor();

			llSay(PUBLIC_CHANNEL, "min_scale_factor = " + (string)min_factor
			+ "\nmax_scale_factor = " + (string)max_factor);

	integer success;		integer success;
	~~llSay(0, "min_scale_factor = " + (string)min_factor + " max_scale_factor = " + (string)max_factor);~~
	~~growing = !growing;~~		if (growing) success = llScaleByFactor(2.0);
	if (growing)		else success = llScaleByFactor(0.5);
	{
	success = llScaleByFactor(2.0);		if (!success) llSay(PUBLIC_CHANNEL, "Scaling failed!");
	}
	else
	{
	success = llScaleByFactor(0.5);
	}
	if (!success)
	{
	llSay(0, "Scaling failed!");
	}
	}		}
	}</lsl>		}</lsl>
Line 69:		Line 67:
	integer ScaleByFactor(float scale) {		integer ScaleByFactor(float scale) {
	vector root = llGetScale() * scale;		vector root = llGetScale() * scale;
	if(VectorAbsStatistics(LIST_STAT_MAX, root) > 64 \|\| VectorAbsStatistics(LIST_STAT_MIN, root) < 0.01 \|\| scale <= 0) return ERR_MALFORMED_PARAMS;
			if (VectorAbsStatistics(LIST_STAT_MAX, root) > 64
			\|\| VectorAbsStatistics(LIST_STAT_MIN, root) < 0.01
			\|\| scale <= 0)
			{
			return ERR_MALFORMED_PARAMS;
			}

	integer prims = llGetNumberOfPrims();		integer prims = llGetNumberOfPrims();
	list set = [PRIM_LINK_TARGET, prims > 1, PRIM_SIZE, root];		list set = [PRIM_LINK_TARGET, prims > 1, PRIM_SIZE, root];

	if(prims > 1) {		if (prims > 1) {
	list get = [];		list get = [];
	integer count = prims;		integer count = prims;
Line 84:		Line 88:
	do {		do {
	vector size = llList2Vector(get, ++count) * scale;		vector size = llList2Vector(get, ++count) * scale;
	vector pos = llList2Vector(get, ++count) * scale;		vector pos = llList2Vector(get, ++count) * scale;
	if(VectorAbsStatistics(LIST_STAT_MAX, size) > 64 \|\| VectorAbsStatistics(LIST_STAT_MIN, size) < 0.01 \|\| VectorAbsStatistics(LIST_STAT_MAX, pos) > 54 )
			if (VectorAbsStatistics(LIST_STAT_MAX, size) > 64
			\|\| VectorAbsStatistics(LIST_STAT_MIN, size) < 0.01
			\|\| VectorAbsStatistics(LIST_STAT_MAX, pos) > 54 )
			{
	return ERR_MALFORMED_PARAMS;		return ERR_MALFORMED_PARAMS;
	set += [PRIM_LINK_TARGET, prims, PRIM_POS_LOCAL, pos, PRIM_SIZE, size];		}
	} while(--prims > 1);
			set += [PRIM_LINK_TARGET, prims,
			PRIM_POS_LOCAL, pos,
			PRIM_SIZE, size];
			} while(--prims > 1);
	}		}
	llSetPrimitiveParams(set);		llSetPrimitiveParams(set);

Maestro Linden at 23:15, 6 January 2014

2014-01-06T23:15:44Z

← Older revision		Revision as of 16:15, 6 January 2014
Line 13:		Line 13:
	\|spec		\|spec
	\|caveats=		\|caveats=
	Due to floating point precision issues (~~because~~ sqrt(xx) != x), avoid rescaling by the values returned by [[llGetMinScaleFactor]] and [[llGetMaxScaleFactor]]. To guarantee successful rescaling, use values slightly within the limits returned by those functions).		Due to floating point precision issues (often, sqrt(xx) != x), avoid rescaling by the values returned by [[llGetMinScaleFactor]] and [[llGetMaxScaleFactor]]. To guarantee successful rescaling, use values slightly within the limits returned by those functions.
	\|constants		\|constants
	\|examples=		\|examples=

Maestro Linden: Documenting the actual function

2014-01-06T22:56:39Z

Documenting the actual function

@@ Line 1: / Line 1: @@
-{{LSL_Function|mode=request
+{{LSL_Function
 |inject-2=
 |func_id=|func_sleep=0.0|func_energy=10.0
@@ Line 6: / Line 6: @@
 |p1_type=float|p1_name=scaling_factor|p1_desc=The multiplier to be used with the prim sizes and their local positions.
 |func_desc=Attempts to resize the entire object by {{LSLP|scaling_factor}}, maintaining the size-position ratios of the prims.
 |return_type=integer
 |return_subtype=boolean
 |return_text=[[TRUE]] if it succeeds, [[FALSE]] if it fails.
 |spec
-|caveats
+|caveats=
-* Rescaling fails if the linkset is physical, a pathfinding character, in a keyframed motion, or if rescaling would cause the parcel to overflow.
+*Due to floating point precision issues (because sqrt(x*x) != x), avoid rescaling by the values returned by [[llGetMinScaleFactor]] and [[llGetMaxScaleFactor]].  To guarantee successful rescaling, use values slightly within the limits returned by those functions).
 |constants
-|examples
+|examples=
 |helpers
 |also_functions=

Maestro Linden at 22:44, 6 January 2014

2014-01-06T22:44:10Z

← Older revision		Revision as of 15:44, 6 January 2014
Line 1:		Line 1:
	{{LSL_Function\|mode=request		{{LSL_Function\|mode=request
	\|inject-2=		\|inject-2=
	\|func_id=\|func_sleep=0.0\|func_energy=		\|func_id=\|func_sleep=0.0\|func_energy=10.0
	\|func=llScaleByFactor\|sort=ScaleByFactor		\|func=llScaleByFactor\|sort=ScaleByFactor
	\|return_type=~~float~~		\|return_type=integer
	\|p1_type=float\|p1_name=scaling_factor\|p1_desc=The multiplier to be used with the prim sizes and their local positions.		\|p1_type=float\|p1_name=scaling_factor\|p1_desc=The multiplier to be used with the prim sizes and their local positions.
	\|func_desc=Attempts to resize the entire object by {{LSLP\|scaling_factor}}, maintaining the size-position ratios of the prims.		\|func_desc=Attempts to resize the entire object by {{LSLP\|scaling_factor}}, maintaining the size-position ratios of the prims.
Line 11:		Line 11:
	\|spec		\|spec
	\|caveats		\|caveats
			* Rescaling fails if the linkset is physical, a pathfinding character, in a keyframed motion, or if rescaling would cause the parcel to overflow.
			* Due to floating point precision issues (because sqrt(x*x) != x), avoid rescaling by the values returned by [[llGetMinScaleFactor]] and [[llGetMaxScaleFactor]]. To guarantee successful rescaling, use values slightly within the limits returned by those functions).
	\|constants		\|constants
	\|examples		\|examples

Maestro Linden at 22:37, 6 January 2014

2014-01-06T22:37:39Z

← Older revision		Revision as of 15:37, 6 January 2014
Line 17:		Line 17:
	{{LSL DefineRow\|\|[[llScaleByFactor]]\|}}		{{LSL DefineRow\|\|[[llScaleByFactor]]\|}}
	{{LSL DefineRow\|\|[[llGetMaxScaleFactor]]\|}}		{{LSL DefineRow\|\|[[llGetMaxScaleFactor]]\|}}
			{{LSL DefineRow\|\|[[llGetMinScaleFactor]]\|}}
	\|also_tests		\|also_tests
	\|also_events		\|also_events

Omei Qunhua: int -> integer

2014-01-06T09:28:42Z

int -> integer

← Older revision		Revision as of 02:28, 6 January 2014
Line 41:		Line 41:
	if(prims > 1) {		if(prims > 1) {
	list get = [];		list get = [];
	~~int~~ count = prims;		integer count = prims;
	do {		do {
	get += [PRIM_LINK_TARGET, count, PRIM_SIZE, PRIM_POS_LOCAL];		get += [PRIM_LINK_TARGET, count, PRIM_SIZE, PRIM_POS_LOCAL];

Strife Onizuka at 07:52, 6 January 2014

2014-01-06T07:52:55Z

← Older revision		Revision as of 00:52, 6 January 2014
Line 7:		Line 7:
	\|func_desc=Attempts to resize the entire object by {{LSLP\|scaling_factor}}, maintaining the size-position ratios of the prims.		\|func_desc=Attempts to resize the entire object by {{LSLP\|scaling_factor}}, maintaining the size-position ratios of the prims.
	\|return_type=integer		\|return_type=integer
	\|return_text=~~boolean,~~ [[~~Template:LSL_Constants/ReturnStatus\|STATUS_* flag~~]] or [[~~Template:LSL_Constants/ReturnError\|ERR_* flag~~]]?		\|return_subtype=boolean
			\|return_text=[[TRUE]] if it succeeds, [[FALSE]] if it fails.
	\|spec		\|spec
	\|caveats		\|caveats

Strife Onizuka at 07:50, 6 January 2014

2014-01-06T07:50:49Z

← Older revision		Revision as of 00:50, 6 January 2014
Line 49:		Line 49:
	vector size = llList2Vector(get, ++count) * scale;		vector size = llList2Vector(get, ++count) * scale;
	vector pos = llList2Vector(get, ++count) * scale;		vector pos = llList2Vector(get, ++count) * scale;
	if(VectorAbsStatistics(LIST_STAT_MAX, size) > 64 \|\| VectorAbsStatistics(LIST_STAT_MIN, size) < 0.01 \|\| VectorAbsStatistics(LIST_STAT_MAX, ~~root~~) > 54 )		if(VectorAbsStatistics(LIST_STAT_MAX, size) > 64 \|\| VectorAbsStatistics(LIST_STAT_MIN, size) < 0.01 \|\| VectorAbsStatistics(LIST_STAT_MAX, pos) > 54 )
	return ERR_MALFORMED_PARAMS;		return ERR_MALFORMED_PARAMS;
	set += [PRIM_LINK_TARGET, prims, PRIM_POS_LOCAL, pos, PRIM_SIZE, size];		set += [PRIM_LINK_TARGET, prims, PRIM_POS_LOCAL, pos, PRIM_SIZE, size];

Strife Onizuka at 07:49, 6 January 2014

2014-01-06T07:49:13Z

← Older revision		Revision as of 00:49, 6 January 2014
Line 42:		Line 42:
	int count = prims;		int count = prims;
	do {		do {
	get += [PRIM_LINK_TARGET, count, PRIM_POS_LOCAL~~, PRIM_SIZE~~];		get += [PRIM_LINK_TARGET, count, PRIM_SIZE, PRIM_POS_LOCAL];
	} while(--count);		} while(--count);
	get = llGetPrimitiveParams(get);		get = llGetPrimitiveParams(get);