Returns the Position and optionally U tangent, V Tangent,Normal
at a given UV value.
Note: This method uses output
arguments. C# and some scripting languages (such as JScript and
PerlScript) don't support arguments passed by reference. However,
there is a alternate version of this method which is considered
safe to use with C#, JScript and PerlScript: NurbsSurface.EvaluatePosition2.
NurbsSurface.EvaluatePosition( UValue, VValue, [Position], [UTangent], [VTangent], [Normal] ); |
| Parameter | Type | Description |
|---|---|---|
| UValue | Double | The UValue at which we want to evaluate the surface. |
| VValue | Double | The VValue at which we want to evaluate the surface. |
| Position | SIVector3 (contains the position) | Position at the given UV. |
| UTangent | SIVector3 (contains the U tangent) | Tangent in U at the given UV. |
| VTangent | SIVector3 (contains the V tangent) | Tangent in V at the given UV. |
| Normal | SIVector3 (contains the normal) | Normal at the given UV. |
set oRoot = Application.ActiveProject.ActiveScene.Root
set oSphere = oRoot.AddGeometry( "Sphere", "NurbsSurface" )
oSphere.ActivePrimitive.Geometry.Surfaces(0).EvaluatePosition _
3.0, 4.0, oPosition,oUTangent,oUTangent,oNormal
LogMessage "The position at 3.0, 4.0 is x :" & oPosition.x & _
" y: " & oPosition.y & " z: " & oPosition.z
|