SymbSrf2Polylines

Section: C Library Functions (3)
Updated: IRIT Version 6.0
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NAME

SymbSrf2Polylines()

SYNOPSIS

symb_lib/symbpoly.c:110

CagdPolylineStruct *SymbSrf2Polylines(CagdSrfStruct *Srf,
                                      int NumOfIsocurves[2],
                                      int SamplesPerCurve,
                                      int Optimal)

DESCRIPTION

Routine to convert a single surface to NumOfIsolines polylines in each parametric direction with SamplesPerCurve in each isoparametric curve. Polyline are always E3 of CagdPolylineStruct type. NULL is returned in case of an error, otherwise list of CagdPolylineStruct. Attempt is made to extract isolines along C1 discontinuities first.

PARAMETERS:

Srf: Srf to extract isoparametric curves from.

NumOfIsocurves: To extarct from Srf in each (U or V) direction.

SamplesPerCurve: Fineness control on piecewise linear curve approximation.

Optimal: Use optimal approximation of isocurves.

FUNCTION RETURN VALUE

CagdPolylineStruct *: List of polylines representing a piecewise linear approximation of the extracted isoparamteric curves or NULL is case of an error.

ORIGIN

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Time: 07:27:17 GMT, October 17, 2022