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0031395: Mesh - BRepMesh produces poor mesh on shape with hidden self-intersections

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Take vertex tolerance into account to avoid excessive points leading to self-intersections in discrete model
This commit is contained in:
oan
2022-11-23 19:32:13 +03:00
parent 686926c0a9
commit 8ffccd9067
2 changed files with 27 additions and 5 deletions
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10
src/BRepMesh/BRepMesh_CurveTessellator.cxx
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@@ -226,7 +226,7 @@ Standard_Boolean BRepMesh_CurveTessellator::isInToleranceOfVertex (
const TopoDS_Vertex& theVertex) const
{
const gp_Pnt aPoint = BRep_Tool::Pnt(theVertex);
const Standard_Real aTolerance = BRep_Tool::Tolerance(theVertex);
const Standard_Real aTolerance = BRep_Tool::Tolerance(theVertex) * 1.1;
return (thePoint.SquareDistance (aPoint) < aTolerance * aTolerance);
}
@@ -243,9 +243,9 @@ Standard_Boolean BRepMesh_CurveTessellator::Value (
thePoint = myDiscretTool.Value (theIndex);
theParameter = myDiscretTool.Parameter (theIndex);
/*if (!isInToleranceOfVertex(thePoint, myFirstVertex) &&
if (!isInToleranceOfVertex(thePoint, myFirstVertex) &&
!isInToleranceOfVertex(thePoint, myLastVertex))
{*/
{
if (!myCurve.IsCurveOnSurface())
{
return Standard_True;
@@ -281,9 +281,9 @@ Standard_Boolean BRepMesh_CurveTessellator::Value (
aSurface->D0(aUV.X(), aUV.Y(), aPntOnSurf);
return (thePoint.SquareDistance(aPntOnSurf) < myEdgeSqTol);
/*}
}
return Standard_False;*/
return Standard_False;
}
//=======================================================================

22
tests/bugs/mesh/bug31395 Normal file
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@@ -0,0 +1,22 @@
puts "========"
puts "0031395: Mesh - BRepMesh produces poor mesh on shape with hidden self-intersections"
puts "========"
puts ""
restore [locate_data_file log368.brep] result
tclean result
incmesh result 0.2
vinit
vsetdispmode 1
vdefaults -autoTriang 0
checkview -display result -3d -path ${imagedir}/${test_image}.png
set log [tricheck result]
if { [llength $log] != 0 } {
puts "Error : Invalid mesh"
} else {
puts "Mesh is OK"
}