Talk:LlDetectedTouchST

2008-09-07T13:52:01Z

Eeb Voom:

{{Talk}}

Regarding the phrase "Each component is in the interval [0.0, 1.0]." - what scale is that? Metres? Or do you mean that 0.0 is the bottom/left and 1.0 is the top/right? (Or 0.0 is top, or 1.0 is left.. I don't know.)
I can't log in to SL right now or I'd test it and find out, but anyone who knows, please update the wiki.

:The bottom left corner of a vertical forward facing surface I think will return <0.0, 0.0, 0.0>. The top right corner would be <1.0, 1.0, 0.0>. The size of the face has no bearing on the value returned by llDetectedTouchST (so there is no "scale"). -- '''[[User:Strife_Onizuka|Strife]]''' <sup><small>([[User talk:Strife_Onizuka|talk]]|[[Special:Contributions/Strife_Onizuka|contribs]])</small></sup> 02:20, 7 September 2008 (PDT)

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Yes, Bottom Left would be <0,0,0> and Top Right would be <1,1,0>

- [[User:Eeb Voom|Eeb Voom]] 06:52, 7 September 2008 (PDT)

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LlDetectedTouchST

2008-09-07T06:07:38Z

Eeb Voom: Added an example.

{{LSL_Function/detected|index|TouchST|simple=*}}{{LSL_Function
|func_id=342|func_sleep=0.0|func_energy=10.0
|func=llDetectedTouchST
|return_type=vector|return_text=that is the surface coordinates for where the prim was touched. The x & y vector positions contain the horizontal ('''s''') & vertical ('''t''') face coordinates respectively ('''{{NoWrap|{{LSL_VR|s|t|0.0}}}}'''). Each component is in the interval [0.0, 1.0].

{{NoWrap|{{LSL_VR|-1.0|-1.0|0.0}}}} is returned when the surface coordinates cannot be determined. See [[#Caveats|Caveats]] for further details.
|p1_type=integer|p1_name=index
|func_footnote=For the {{LSLGC|Touch|touch}} category of events only.
|func_desc
|spec
|caveats=
'''{{NoWrap|{{LSL_VR|-1.0|-1.0|0.0}}}} is returned when...'''
* The avatar's viewer does not support face touch detection.
** To check if face touch detection is supported check the return of [[llDetectedTouchFace]].
* The touch has moved off the surface of the prim.
* The touch happened too close to the edge of the face to determine a location.
* The triggering event is not a touch event.
|examples=
<lsl>default {

touch_start(integer num_detected) {
integer i = 0;
for(; i < num_detected; ++i ) {
vector touchedpos = llDetectedTouchST(i);

if (llDetectedTouchFace(i) == -1) {
llWhisper(0, "Sorry, your viewer doesn't support touched faces.");
}
else if ( touchedpos == <-1.0, -1.0, 0.0> ) {
llWhisper(0, "Sorry, the surface touch position could not be determined.");
}
else {
llWhisper(0, (string) touchedpos);
}
} // while ...
} // touch_start

}</lsl>
<lsl>vector touchedLoc;

default {
//Draws a cross-hair at the detected Location on the detected face.

touch(integer num_detected) {
integer i;
for (i = 0; i < num_detected; i++) {
touchedLoc = llDetectedTouchST(i); //What location has been touched?
llSetPrimitiveParams([PRIM_TEXTURE, llDetectedTouchFace(i), "5ac7995c-4c24-8b60-ae61-6a837619dc75",
<1.0,1.0,0.0>, touchedLoc, 180*DEG_TO_RAD]); //Set the Texture Location at the touched location
}
}

}
</lsl>
|helpers
|related
|also_functions=
{{LSL DefineRow||[[llDetectedLinkNumber]]}}
{{LSL DefineRow||[[llDetectedTouchFace]]}}
{{LSL DefineRow||[[llDetectedTouchUV]]}}
{{LSL DefineRow||[[llDetectedTouchPos]]}}
{{LSL DefineRow||[[llDetectedTouchNormal]]}}
{{LSL DefineRow||[[llDetectedTouchBinormal]]}}
|also_events=
{{LSL DefineRow||[[touch_start]]|}}
{{LSL DefineRow||[[touch]]|}}
{{LSL DefineRow||[[touch_end]]|}}
|also_articles
|notes
|history=Introduced in Viewer {{SVN|870|rev=92872|branch=Release|anchor=file14|date=Wednesday, 23 July 2008}}, Supported by Beta Server 1.24.0.93754 (Wenesday 6th August 2008), and viewer binary 1.20.15 (93532).
|cat1=Touch
|cat2
|cat3
|cat4
}}

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Talk:LlDetectedTouchST

LlDetectedTouchST