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0032557: Modeling Data - Use of BRepBuilderAPI_NurbsConvert create 2d p-curves with errors

Browse Source 
BRepTools/BRepTools_NurbsConvertModification.cxx -
 Checking domain of 2dCurves if surfaces are periodic is improved

tests/bugs/moddata_3/bug32557 - test case added
This commit is contained in:
ifv 2021-09-24 16:24:34 +03:00 committed by smoskvin
parent f72c595119
commit 342ed98c32
3 changed files with 26 additions and 4 deletions
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18
src/BRepTools/BRepTools_NurbsConvertModification.cxx
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@ -493,11 +493,23 @@ Standard_Boolean BRepTools_NurbsConvertModification::NewCurve2d
{ {
//Surface is periodic, checking curve2d domain //Surface is periodic, checking curve2d domain
//Old domain //Old domain
gp_Pnt2d aPf = C2d->Value(f2d); Standard_Real aMinDist = Precision::Infinite();
if (S->IsUPeriodic())
{
aMinDist = Min(0.5 * S->UPeriod(), aMinDist);
}
if (S->IsVPeriodic())
{
aMinDist = Min(0.5 * S->VPeriod(), aMinDist);
}
aMinDist *= aMinDist;
//Old domain
Standard_Real t = 0.5 * (f2d + l2d);
gp_Pnt2d aPf = C2d->Value(t);
//New domain //New domain
gp_Pnt2d aNewPf = Curve2d->Value(f2d); gp_Pnt2d aNewPf = Curve2d->Value(t);
gp_Vec2d aT(aNewPf, aPf); gp_Vec2d aT(aNewPf, aPf);
if (aT.SquareMagnitude() > Precision::SquarePConfusion()) if (aT.SquareMagnitude() > aMinDist)
{ {
Curve2d = Handle(Geom2d_Curve)::DownCast(Curve2d->Translated(aT)); Curve2d = Handle(Geom2d_Curve)::DownCast(Curve2d->Translated(aT));
} }

2
tests/bugs/mesh/bug30008_2
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@ -19,7 +19,7 @@ nurbsconvert result result
incmesh result 0.15 -a 20 incmesh result 0.15 -a 20
tricheck result tricheck result
checktrinfo result -tri 191 -nod 146 -defl 0.052300780129031083 -tol_abs_defl 1.0e-6 checktrinfo result -tri 193 -nod 147 -defl 0.052300780129031083 -tol_abs_defl 1.0e-6
vinit vinit

10
tests/bugs/moddata_3/bug32557 Normal file
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@ -0,0 +1,10 @@
puts "==========================================================="
puts "0032557: Modeling Data - Use of BRepBuilderAPI_NurbsConvert create 2d p-curves with gaps"
puts "==========================================================="
puts ""
restore [locate_data_file bug32557.brep] f
nurbsconvert bf f
checkmaxtol bf -ref 1.1e-7