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0030645: Modeling Algorithms - B-spline segmentation produces wrong parametrization

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Method Segment() of B-spline curve and surface has been extended by parameter theTolerance (theUTolerance and theVTolerance for surface), which defines the proximity between knots of a NURBS and boundaries of cutting segment. The default value of the tolerance is Precision::PConfusion().
Test cases have been added to check segmenting of B-spline surface and curves both 2D and 3D.
This commit is contained in:
azv
2019-04-13 14:57:39 +03:00
committed by bugmaster
parent d1775ee992
commit 6fd9bdf2cc
12 changed files with 334 additions and 342 deletions
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src/BndLib/BndLib_Add3dCurve.cxx
+4 -1
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@@ -226,7 +226,10 @@ void BndLib_Add3dCurve::Add( const Adaptor3d_Curve& C,
if(Bsaux->LastParameter() < U2 ) u2 = Bsaux->LastParameter();
// modified by NIZHNY-EAP Fri Dec 3 14:29:18 1999 ___END___
}
Bsaux->Segment(u1, u2);
Standard_Real aSegmentTol = Precision::PConfusion();
if (Abs(u2 - u1) < aSegmentTol)
aSegmentTol = Abs(u2 - u1) * 0.01;
Bsaux->Segment(u1, u2, aSegmentTol);
Bs = Bsaux;
}
//OCC566(apo)->