Skip to content
lsl.devlsl.devLSL Dev

llDetectedTouchBinormal

View as MarkdownThis page as plain textOpen in ChatGPTAsk questions about this pageOpen in ClaudeAsk questions about this page
function
Function syntax
vector llDetectedTouchBinormal(
  1. integer index// Index of the detection information.
);
Returns
vector
Energy
10

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 normal.

Returns a vector that is the surface binormal (tangent to the surface, pointing along the positive T (V) direction of tangent space) where the touch event was triggered. Along with llDetectedTouchNormal, this information can be used to find the tangent space at the touch location.

How to use
vector result = llDetectedTouchBinormal(0);

Caveats

Section titled “Caveats”
  • 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.

Examples

Section titled “Examples”
Example 1
default
{
    touch_start(integer total_num)
    {
        llOwnerSay((string)llDetectedTouchBinormal(0));
    }
}

History

Section titled “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)
  • Date of Release Server 29-08-2008
  • Date of Release Client 16-10-2008

See also

Section titled “See also”

Functions

Section titled “Functions”

Events

Section titled “Events”
Original wiki source

Some wiki templates and tables need their original context. View this article on the Second Life Wiki. Technical wording and examples are retained from the source; historical guidance may differ from current behavior.