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0028196: Modeling Data - Algorithm 'Extrema_GenLocateExtPS' failed to find the extremum in a case

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Extrema_GenLocateExtPS.cxx, Extrema_GenLocateExtPS.hxx:

Adjusting tolerances according to surface sizes is added.
Additional methods for searching solution are added for cases if basic method fails.

Extrema_FuncPSDist.cxx - small bug fixing.

BRepFill_TrimShellCorner.cxx - fixing regression

ChFi3d_Builder_CnCrn.cxx setting parameters for Plate algorithm to improve stability of solution

ProjLib_ComputeApproxOnPolarSurface.cxx - code optimization

Some test cases are modified according to current state of Extrema algorithm
This commit is contained in:
ifv
2020-12-17 17:41:59 +03:00
committed by bugmaster
parent 6c2cf030e2
commit c69e0e408f
12 changed files with 209 additions and 50 deletions
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21
src/ChFi3d/ChFi3d_Builder_CnCrn.cxx
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@@ -2062,8 +2062,18 @@ void ChFi3d_Builder::PerformMoreThreeCorner(const Standard_Integer Jndex,
}
// declaration for plate
GeomPlate_BuildPlateSurface PSurf(3,10,3,tol2d,tolesp,angular);
//GeomPlate_BuildPlateSurface PSurf(3,10,3,tol2d,tolesp,angular);
//
//Sence of Plate parameters and their preferable values :
// degree is total order of ordinary or mixed derivatives:
// dS/dU, dS/dV have degree 1, d2S/dU2, d2S/dV2, d2S/(dUdV) have degree 2
// nbiter - number of iterations, when surface from previous iteration uses as initial surface for next one
// practically this process does not converge, using "bad" initial surface leads to much more "bad" solution.
// constr is order of constraint: 0 - G0, 1 - G1 ...
// Using constraint order > 0 very often causes unpredicable undulations of solution
Standard_Integer degree = 3, nbcurvpnt = 10, nbiter = 1;
Standard_Integer constr = 1; //G1
GeomPlate_BuildPlateSurface PSurf(degree, nbcurvpnt, nbiter, tol2d, tolesp, angular);
// calculation of curves on surface for each stripe
for (ic=0;ic<nedge;ic++) {
gp_Pnt2d p2d1, p2d2;
@@ -2088,9 +2098,10 @@ void ChFi3d_Builder::PerformMoreThreeCorner(const Standard_Integer Jndex,
Adaptor3d_CurveOnSurface CurvOnS (Acurv,Asurf);
Handle(Adaptor3d_CurveOnSurface) HCons =
new Adaptor3d_CurveOnSurface(CurvOnS);
Order.SetValue(ic,1);
Handle(GeomPlate_CurveConstraint) Cont =
new GeomPlate_CurveConstraint(HCons,Order.Value(ic),10,tolesp,angular,0.1);
//Order.SetValue(ic,1);
Order.SetValue(ic, constr);
Handle(GeomPlate_CurveConstraint) Cont =
new GeomPlate_CurveConstraint(HCons,Order.Value(ic), nbcurvpnt,tolesp,angular,0.1);
PSurf.Add(Cont);
// calculate indexes of points and of the curve for the DS