Difference between revisions of "LlGroundNormal"

Revision as of 09:12, 16 June 2012

Function: vector llGroundNormal( vector offset );

Returns a vector that is the ground normal from the current position + offset.

• vector

–

offset relative to the noZ position and expressed in local coordinates

The requested position needs to be in the same sim.

This function is defined as: <lsl> vector llGroundNormal(vector offset) {

   vector slope = llGroundSlope(offset);
   return <slope.x, slope.y, 1.0>;

} </lsl>

There seems to some confusion be between a Surface Normal (the direction from the surface) and Normalized Vector (a vector with a magnitude of 1.0, AKA Unit Vector). This function does not return a unit vector. Surface normals may encode additional information in the magnitude of the vector.if you need a Unit Vector, simply use llVecNorm.

Signature
function vector llGroundNormal( vector offset );

@@ Line 1: / Line 1: @@
 {{LSL_Function
+|inject-2={{LSL Function/position|offset|local=noZ}}
 |func_id=222|func_sleep=0.0|func_energy=10.0
 |func=llGroundNormal
@@ Line 5: / Line 6: @@
 |func_footnote=The requested position needs to be in the same sim.
 |func_desc
-|return_text=that is the ground normal from the current [[llGetPos|position]] + '''offset'''.
+|return_text=that is the ground {{Wikipedia|Normal (geometry)|normal}} from the current [[llGetPos|position]] + {{LSLPT|offset}}.
 |spec=This function is defined as:
 <lsl>