LlGroundNormal: Difference between revisions
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m changed the caveat to say "unit normal" instead of just normal |
Void Singer (talk | contribs) m corrected Caveat to Note |
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*There seems to some confusion be between a [http://en.wikipedia.org/wiki/Normal_%28geometry%29 Surface Normal] (the direction from the surface) and [http://en.wikipedia.org/wiki/Unit_vector 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]]. | |||
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Revision as of 04:04, 16 June 2012
| LSL Portal | Functions | Events | Types | Operators | Constants | Flow Control | Script Library | Categorized Library | Tutorials |
Summary
Function: vector llGroundNormal( vector offset );| 0.0 | Forced Delay |
| 10.0 | Energy |
Returns a vector that is the ground normal from the current position + offset.
| • vector | offset |
The requested position needs to be in the same sim.
Specification
This function is defined as: <lsl> vector llGroundNormal(vector offset) {
vector slope = llGroundSlope(offset); return <slope.x, slope.y, 1.0>;
} </lsl>
Examples
Notes
- 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.
See Also
Functions
| • | llGround | – | Gets the ground height | |
| • | llGroundContour | – | Gets the ground contour | |
| • | llGroundSlope | – | Gets the ground slope |
Deep Notes
Signature |
|---|
function vector llGroundNormal( vector offset ); |