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0027239: Meshing algorithm creates wrong Triangulation

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Do not insert consequent duplicating nodes in PolygonOnTriangulation.

Small correction of test case bugs/mesh/bug27239
This commit is contained in:
oan 2016-04-27 14:10:15 +03:00 committed by bugmaster
parent 29627b4cdb
commit dfb3bdd43a
2 changed files with 39 additions and 3 deletions
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13
src/BRepMesh/BRepMesh_FastDiscret.cxx
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@ -846,6 +846,7 @@ void BRepMesh_FastDiscret::update(
aNewParamsVec (aNodesCount) = aEAttr.FirstParam; aNewParamsVec (aNodesCount) = aEAttr.FirstParam;
++aNodesCount; ++aNodesCount;
Standard_Integer aPrevNodeId = ivf;
Standard_Integer aLastPointId = myAttribute->LastPointId(); Standard_Integer aLastPointId = myAttribute->LastPointId();
for (Standard_Integer i = 2; i < aNodesNb; ++i) for (Standard_Integer i = 2; i < aNodesNb; ++i)
{ {
@ -855,15 +856,21 @@ void BRepMesh_FastDiscret::update(
if (!aEdgeTool->Value(i, aParam, aPnt, aUV)) if (!aEdgeTool->Value(i, aParam, aPnt, aUV))
continue; continue;
myBoundaryPoints->Bind(++aLastPointId, aPnt); // Imitate index of 3d point in order to not to add points to map without necessity.
Standard_Integer iv2, isv; Standard_Integer iv2, isv;
myAttribute->AddNode(aLastPointId, aUV.Coord(), BRepMesh_Frontier, iv2, isv); myAttribute->AddNode(aLastPointId + 1, aUV.Coord(), BRepMesh_Frontier, iv2, isv);
if (aPrevNodeId == iv2)
continue;
// Ok, now we can add point to the map.
myBoundaryPoints->Bind (++aLastPointId, aPnt);
aNewNodesInStructVec(aNodesCount) = aLastPointId; aNewNodesInStructVec(aNodesCount) = aLastPointId;
aNewNodesVec (aNodesCount) = isv; aNewNodesVec (aNodesCount) = isv;
aNewParamsVec (aNodesCount) = aParam; aNewParamsVec (aNodesCount) = aParam;
++aNodesCount; ++aNodesCount;
aPrevNodeId = iv2;
} }
aNewNodesInStructVec(aNodesCount) = ipl; aNewNodesInStructVec(aNodesCount) = ipl;

29
tests/bugs/mesh/bug27239 Normal file
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@ -0,0 +1,29 @@
puts "========="
puts "OCC27239"
puts "========="
puts ""
#################################
# Meshing algorithm creates wrong triangulation
#################################
pload ALL
restore [locate_data_file bug27239_f1.brep] result
set bug_info [incmesh result 0.1]
if {[regexp "NoError" $bug_info] != 1} {
puts "Error: failure during triangulation"
}
set log [tricheck result]
if { [llength $log] != 0 } {
puts "Error : Some faces has failed to mesh"
}
checkshape result
explode result e
set edge_dump [dump result_4]
if {[regexp "5 5" $edge_dump] != 0} {
puts "Error: there are duplicating nodes in polygon on triangulation"
}
checkview -display result -3d -path ${imagedir}/${test_image}.png