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Action:
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Offsets the given surface by offset distance.
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Prototype:
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bs3_surface bs3_surface_offset (
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const bs3_surface orig_surf,
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// given surface
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double offset_dist,
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// distance to offset
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double offset_tol
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// approximate
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// tolerance
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);
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Includes:
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#include "kernel/acis.hxx"
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#include "kernel/spline/bs3_srf/bs3surf.hxx"
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#include "kernel/spline/sg_bs3s/sps3srtn.hxx"
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Description:
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It is assumed that the offset does not create a degenerate surface.
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A +ve distance means to offset in the direction of the surface normal, and a -ve distance means to offset in direction opposite to the surface normal.
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The offset surface constructed will be at least with in the
offset_tol tolerance value ( 0.001 is a good value ).
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Errors:
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If an error occurs, a
NULL surface is returned.
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Limitations:
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If the surface has any flat-spots (zero length normals) then the offset-algorithm fails and a
NULL
surface is returned.
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If a too low
offset_tol is given, a potential data explosion may happen in the result.
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Library:
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kernel
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Filename:
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kern/kernel/spline/sg_bs3s/sps3srtn.hxx
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Effect:
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Changes model
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