LlDetectedTouchST

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/LSL

DetectedTouchST

llDetectedTouchST

Summary

Function: vector llDetectedTouchST( integer index );

342	Function ID
0.0	Forced Delay
10.0	Energy

Returns a vector 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 (<s, t, 0.0>). Each component is in the interval [0.0, 1.0].

<-1.0, -1.0, 0.0> is returned when the surface coordinates cannot be determined. See Caveats for further details.

• integer

index

–

Index of detection information

index does not support negative indexes. For the touch category of events only.

Caveats

• If index is out of bounds the script continues to execute without an error message.<-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.

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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>

See Also

Events

•	touch_start
•	touch
•	touch_end

Functions

•	llDetectedLinkNumber
•	llDetectedTouchFace
•	llDetectedTouchUV
•	llDetectedTouchPos
•	llDetectedTouchNormal
•	llDetectedTouchBinormal

Articles

•

Detected

Deep Notes

History

Introduced in Viewer SVN:870 r92872 Branch:Release Wednesday, 23 July 2008, Supported by Beta Server 1.24.0.93754 (Wenesday 6th August 2008), and viewer binary 1.20.15 (93532).

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Signature
function vector llDetectedTouchST( integer index );