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              ISurface Methods | 
          
The ISurface type exposes the following members.
| Name | Description | |
|---|---|---|
| ClosestPoint | 
            Input the parameters of the point on the surface that is closest to testPoint.
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| Domain | Gets the domain in a direction.  | |
| Evaluate | 
            Evaluates a surface mathematically.
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| GetSurfaceSize | 
            Gets an estimate of the size of the rectangle that would be created
            if the 3d surface where flattened into a rectangle.
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| IsoCurve | Gets isoparametric curve.  | |
| NormalAt | 
            Computes the surface normal at a point.
             This is the simple evaluation call - it does not support error handling.  | |
| PointAt | 
            Evaluates a point at a given parameter.
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