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More elaborate wire ordering check and shell sewing code (#147)

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This commit is contained in:
Thomas Krijnen
2016-12-09 16:40:14 +01:00
committed by GitHub
parent 51409aff8f
commit 4354361a13
4 changed files with 123 additions and 65 deletions
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src/ifcgeom/IfcGeomShapes.cpp
+4 -34
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@@ -643,49 +643,19 @@ bool IfcGeom::Kernel::convert(const IfcSchema::IfcConnectedFaceSet* l, TopoDS_Sh
if (face_list.Extent() == 0) {
return false;
}
bool valid_shell = false;
TopTools_ListIteratorOfListOfShape face_iterator;
if ( face_list.Extent() < getValue(GV_MAX_FACES_TO_SEW) ) {
BRepOffsetAPI_Sewing builder;
builder.SetTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
builder.SetMaxTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
builder.SetMinTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
for (face_iterator.Initialize(face_list); face_iterator.More(); face_iterator.Next()) {
builder.Add(face_iterator.Value());
}
try {
builder.Perform();
shape = builder.SewedShape();
valid_shell = BRepCheck_Analyzer(shape).IsValid() != 0;
} catch(...) {}
if (valid_shell) {
try {
ShapeFix_Solid solid;
solid.LimitTolerance(getValue(GV_POINT_EQUALITY_TOLERANCE));
TopoDS_Solid solid_shape = solid.SolidFromShell(TopoDS::Shell(shape));
if (!solid_shape.IsNull()) {
try {
BRepClass3d_SolidClassifier classifier(solid_shape);
shape = solid_shape;
} catch (...) {}
}
} catch(...) {}
} else {
Logger::Message(Logger::LOG_WARNING,"Failed to sew faceset:",l->entity);
}
}
if (!valid_shell) {
if (face_list.Extent() > getValue(GV_MAX_FACES_TO_SEW) || !create_solid_from_faces(face_list, shape)) {
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
TopTools_ListIteratorOfListOfShape face_iterator;
for (face_iterator.Initialize(face_list); face_iterator.More(); face_iterator.Next()) {
builder.Add(compound, face_iterator.Value());
}
shape = compound;
}
return true;
}