Difference between revisions of "LlDetectedTouchNormal"
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|return_type=vector|return_text=that is the surface normal (perpendicular to the surface) where the touch event was triggered. Along with [[llDetectedTouchBinormal]], this information can be used to find the [http://en.wikipedia.org/wiki/Tangent_space tangent space] at the touch location. | |return_type=vector|return_text=that is the surface normal (perpendicular to the surface) where the touch event was triggered. Along with [[llDetectedTouchBinormal]], this information can be used to find the [http://en.wikipedia.org/wiki/Tangent_space tangent space] at the touch location. | ||
|p1_type=integer|p1_name=index | |p1_type=integer|p1_name=index | ||
|func_footnote=For the {{LSLGC|Touch|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. | |func_footnote=For the {{LSLGC|Touch|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.{{PBR}}To find the third tangent vector, cross this vector with the [[llDetectedTouchBinormal|binormal]]. | ||
|func_desc | |func_desc | ||
|spec | |spec | ||
Revision as of 07:37, 5 March 2010
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: vector llDetectedTouchNormal( integer index );| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns a vector that is the surface normal (perpendicular to the surface) where the touch event was triggered. Along with llDetectedTouchBinormal, this information can be used to find the tangent space at the touch location.
| • 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.To find the third tangent vector, cross this vector with the binormal.
Caveats
- 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.
- The avatar's viewer does not support face touch detection.
Examples
Useful Snippets
<lsl>touch_start(integer total_number){
// rotates the prim, so the touched position points upwards llSetRot(llGetRot()*llRotBetween(llDetectedTouchNormal(0),<0,0,1>));
}</lsl>
See Also
Events
| • | touch_start | |||
| • | touch | |||
| • | touch_end |
Functions
| • | llDetectedLinkNumber | |||
| • | llDetectedTouchFace | |||
| • | llDetectedTouchST | |||
| • | llDetectedTouchUV | |||
| • | llDetectedTouchPos | |||
| • | llDetectedTouchBinormal |
Articles
| • | Detected |
Deep Notes
History
- Introduced in Viewer
SVN:870 r92872 Branch:Release Wednesday, 23 July 2008, no server support, no viewer binary released. - Server support available on preview grid in Second Life Beta Server 1.24, client support in Preview Grid viewer 1.20.15 (93532)
Signature |
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function vector llDetectedTouchNormal( integer index ); |