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Action:
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Estimates the parameter values of the foot of a perpendicular from a given point to the surface.
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Prototype:
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SPApar_pos bs3_surface_estimate_param (
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SPAposition const& pos,
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// given point
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bs3_surface surface,
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// given surface
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logical recurse
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// use recursion
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= FALSE
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);
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Includes:
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#include "kernel/acis.hxx"
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#include "baseutil/logical.h"
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#include "baseutil/vector/param.hxx"
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#include "baseutil/vector/position.hxx"
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#include "kernel/spline/bs3_srf/bs3surf.hxx"
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#include "kernel/spline/bs3_srf/sp3srtn.hxx"
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Description:
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It is expected that this function, followed by a call to bs3_surface_perp using the estimated parameter value, will be substantially faster than a call to bs3_surface_perp with no estimated parameter value; however, the result may not give the nearest perpendicular, even if the given point is very near to the surface. Use bs3_surface_estimate_param only with algorithms that are resistant to such unexpected results.
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Library:
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kernel
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Filename:
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kern/kernel/spline/bs3_srf/sp3srtn.hxx
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Effect:
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Read-only
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