API Reference > OdGe Classes > OdGeSurface Class > OdGeSurface Methods > paramOf Method > OdGeSurface::paramOf Method (OdGePoint3d&, OdGeUvBox*, OdGeTol&)
OdGeSurface::paramOf Method (OdGePoint3d&, OdGeUvBox*, OdGeTol&)
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Parameters |
Description |
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const OdGePoint3d& point |
[in] Point to be evaluated. |
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const OdGeUvBox* uvBox |
[in] uv-box of closest point. |
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const OdGeTol& tol = OdGeContext::gTol |
[in] Geometric tolerance. |
Returns the 2D pair of parameter values of a point on this surface.
The returned parameters specify a point within tol of point. If point is not on this surface, the results are unpredictable. If you are not sure the point is on this surface, use isOn() instead of this function.
If the 2D projection of the point didn't lie in the u or v interval of uvBox-bounds, the closest bound of the interval is set as a corresponding u/v parameter of resulting point. In case of uvBox == NULL paramOf(point, box, tol) is called in which box is a native envelope of the surface.
By default this function throws the exception "not Implemented". Should be implemented in derived classes.
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