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0028028: Solid becomes invalid after scaling

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The shape after scaling contains PCurves with incorrect parametrization, because of too large tolerance given.

1. Set Precision::PConfution() as a tolerance for GeomLib::SameRange.
2. Do not take into account tolerances of vertices while calculating tolerance of transformed PCurve for edge.
3. Test case bugs/modalg_6/bug28028
This commit is contained in:
azv 2016-10-29 11:23:05 +03:00 committed by apn
parent 1475265b58
commit 9c189bd8dc
2 changed files with 23 additions and 3 deletions
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7
src/BRepTools/BRepTools_TrsfModification.cxx
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@ -204,9 +204,10 @@ Standard_Boolean BRepTools_TrsfModification::NewCurve2d
TopExp::Vertices(E,V1,V2);
TopoDS_Shape initEFOR = E.Oriented(TopAbs_FORWARD); // skl
TopoDS_Edge EFOR = TopoDS::Edge(initEFOR/*E.Oriented(TopAbs_FORWARD)*/); //skl
NewParameter(V1,EFOR,f,Tol);
NewParameter(V2,EFOR,l,Tol);
GeomLib::SameRange(Tol,NewC,newf,newl,f,l,C);
Standard_Real aTolV;
NewParameter(V1, EFOR, f, aTolV);
NewParameter(V2, EFOR, l, aTolV);
GeomLib::SameRange(Precision::PConfusion(), NewC, newf, newl, f, l, C);
return Standard_True;
}

19
tests/bugs/modalg_6/bug28028 Normal file
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@ -0,0 +1,19 @@
puts "========"
puts "OCC28028"
puts "========"
puts ""
#################################################
# Solid becomes invalid after scaling
#################################################
pload XDE
testreadstep [locate_data_file bug28028_stamp.stp] s
tcopy s result
checkshape s
tscale result 0 0 0 3
checkshape result
checkprops result -s 2197.19 -v 5026.59