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0025980: Wrong result obtained by projection algorithm.

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Possibility of "projection failed" state to non-analytical and non-spline surfaces added.
Test-case for issue #25980
This commit is contained in:
aml 2015-03-27 15:32:10 +03:00 committed by apv
parent 41ed1ed236
commit aa9d6bec4e
3 changed files with 24 additions and 6 deletions
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10
src/ProjLib/ProjLib_CompProjectedCurve.cxx
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@ -560,7 +560,6 @@ void ProjLib_CompProjectedCurve::Init()
Standard_Boolean FromLastU=Standard_False;
//new part (to discard far solutions)
//Method Extrema_ExtCS gives wrong result(ex. sphere and segment orthogonal to it)
Standard_Real TolC = Precision::Confusion(), TolS = Precision::Confusion();
Extrema_ExtCS CExt(myCurve->Curve(),
mySurface->Surface(),
@ -570,13 +569,16 @@ void ProjLib_CompProjectedCurve::Init()
{
// Search for the minimum solution
Nend = CExt.NbExt();
if(myMaxDist > 0)
if(myMaxDist > 0 &&
// Avoid usage of extrema result that can be wrong for extrusion
mySurface->GetType() != GeomAbs_SurfaceOfExtrusion)
{
Standard_Real min_val2;
min_val2 = CExt.SquareDistance(1);
for(i = 2; i <= Nend; i++)
if (CExt.SquareDistance(i) < min_val2) min_val2 = CExt.SquareDistance(i);
if(min_val2 > myMaxDist * myMaxDist) return;
if (CExt.SquareDistance(i) < min_val2) min_val2 = CExt.SquareDistance(i);
if (min_val2 > myMaxDist * myMaxDist)
return;
}
}
// end of new part

4
src/ProjLib/ProjLib_ProjectedCurve.cxx
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@ -522,7 +522,7 @@ void ProjLib_ProjectedCurve::Load(const Handle(Adaptor3d_HCurve)& C)
}
}
ProjLib_CompProjectedCurve Projector(mySurface,myCurve, myTolerance, myTolerance);
ProjLib_CompProjectedCurve Projector(mySurface,myCurve, myTolerance, myTolerance, 100 * myTolerance);
Handle(ProjLib_HCompProjectedCurve) HProjector = new ProjLib_HCompProjectedCurve();
HProjector->Set(Projector);
@ -537,7 +537,7 @@ void ProjLib_ProjectedCurve::Load(const Handle(Adaptor3d_HCurve)& C)
}
else
{
StdFail_NotDone::Raise("ProjLib CompProjectedCurve Not Done");
return;
}
// Approximons cette courbe algorithmique.
Standard_Boolean Only3d = Standard_False;

16
tests/bugs/modalg_5/bug25980 Normal file
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@ -0,0 +1,16 @@
puts "========"
puts "OCC25980"
puts "========"
puts ""
#################################################
# Wrong result obtained by projection algorithm
#################################################
restore [locate_data_file c2t.draw] c
restore [locate_data_file s1t.draw] s
set bug_info [catch {project x c s}]
if {$bug_info == 0} {
puts "ERROR: OCC25980 is reproduced."
}