LlDetectedTouchPos

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/LSL

DetectedTouchPos

llDetectedTouchPos

Summary

1 Bug

Function: vector llDetectedTouchPos( integer index );

339	Function ID
0.0	Forced Delay
10.0	Energy

Returns a vector that is the position where the object was touched in region coordinates, unless it is attached to the HUD, in which case it returns the position in screen space coordinates.

• integer

index

–

Index of detection information

index does not support negative indexes. For the touch category of events only. The prim that was touched may not be the prim receiving the event, use llDetectedLinkNumber to check for this; likewise you can use llDetectedTouchFace to determine which face was touched.

Caveats

• HUD attachments currently return coordinates relative to the center of the screen rather than the attachment point. SVC-3425
• If index is out of bounds the script continues to execute without an error message.
• TOUCH_INVALID_VECTOR 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 event triggered is not a touch event.

Important Issues

~ All Issues ~ Search JIRA for related Bugs

SVC-3425

A

For HUDs llDetectedTouchPos does not return positions relative to attach point, position is relative to screen center?

Examples

<lsl> default {

   touch_start(integer pos_detected)
   {
       integer i = 0;
       for(; i<pos_detected; ++i)
           llWhisper(0, "Pos clicked: " + (string)llDetectedTouchPos(i));
   }

} </lsl> <lsl> vector GetRealTouchPos(vector pos) {

   //By Ariu Arai for free use to anyone
   //Returns a useful HUD Position Vector from the llDetectedTouchPos(); function
   //USE: vector pos = GetRealTouchPos(llDetectedTouchPos(0)); .. Etc.
   //Only works on child prims
   
   integer point = llGetAttached();
   vector offset;
   
   if(point == ATTACH_HUD_TOP_RIGHT)offset = <-.933,0,.5>;
   else if(point == ATTACH_HUD_TOP_CENTER)offset = <0,0,.5>;
   else if(point == ATTACH_HUD_TOP_LEFT)offset = <.933,0,.5>;
   else if(point == ATTACH_HUD_BOTTOM_LEFT)offset = <.933,0,-.5>;
   else if(point == ATTACH_HUD_BOTTOM)offset = <0,0,-.5>;
   else if(point == ATTACH_HUD_BOTTOM_RIGHT)offset = <-.933,0,-.5>;
   
   return ((pos - llGetLocalPos()) / llGetLocalRot()) - offset;

}

</lsl>

See Also

Events

•	touch_start
•	touch
•	touch_end

Functions

•	llDetectedLinkNumber
•	llDetectedTouchFace
•	llDetectedTouchST
•	llDetectedTouchUV
•	llDetectedTouchNormal
•	llDetectedTouchBinormal

Articles

•

Detected

Deep Notes

History

• Introduced in Viewer SVN:870 r92872 Branch:Release Wednesday, 23 July 2008.
• Server support available in Second Life Server 1.24.7.98039, client support in Release Candidate viewer 1.21.4 (98167).

All Issues

~ Search JIRA for related Issues

SVC-3425

A

For HUDs llDetectedTouchPos does not return positions relative to attach point, position is relative to screen center?

Signature
function vector llDetectedTouchPos( integer index );