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- Check the validity of solids created from sewed shells and potentially revert to a shell or compound of faces

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- Flag shape representations, for which no item succeeds, as failed
This commit is contained in:
Thomas Krijnen
2014-06-27 12:00:41 +00:00
parent 18620d29ae
commit 577565a494
1 changed files with 32 additions and 15 deletions
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src/ifcgeom/IfcGeomShapes.cpp
+32 -15
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@@ -76,6 +76,8 @@
#include <BRepCheck_Analyzer.hxx>
#include <BRepAlgoAPI_Common.hxx>
#include <BRepClass3d_SolidClassifier.hxx>
#include "../ifcgeom/IfcGeom.h"
bool IfcGeom::convert(const Ifc2x3::IfcExtrudedAreaSolid::ptr l, TopoDS_Shape& shape) {
@@ -211,6 +213,7 @@ bool IfcGeom::convert(const Ifc2x3::IfcConnectedFaceSet::ptr l, TopoDS_Shape& sh
Ifc2x3::IfcFace::list faces = l->CfsFaces();
bool facesAdded = false;
const unsigned int num_faces = faces->Size();
bool valid_shell = false;
if ( num_faces < GetValue(GV_MAX_FACES_TO_SEW) ) {
BRepOffsetAPI_Sewing builder;
builder.SetTolerance(GetValue(GV_POINT_EQUALITY_TOLERANCE));
@@ -228,12 +231,22 @@ bool IfcGeom::convert(const Ifc2x3::IfcConnectedFaceSet::ptr l, TopoDS_Shape& sh
if ( ! facesAdded ) return false;
builder.Perform();
shape = builder.SewedShape();
try {
ShapeFix_Solid solid;
solid.LimitTolerance(GetValue(GV_POINT_EQUALITY_TOLERANCE));
shape = solid.SolidFromShell(TopoDS::Shell(shape));
} catch(...) {}
} else {
valid_shell = BRepCheck_Analyzer(shape).IsValid();
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(...) {}
}
}
if (!valid_shell) {
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
@@ -292,16 +305,20 @@ bool IfcGeom::convert(const Ifc2x3::IfcMappedItem::ptr l, IfcRepresentationShape
bool IfcGeom::convert(const Ifc2x3::IfcShapeRepresentation::ptr l, IfcRepresentationShapeItems& shapes) {
Ifc2x3::IfcRepresentationItem::list items = l->Items();
if ( ! items->Size() ) return false;
for ( Ifc2x3::IfcRepresentationItem::it it = items->begin(); it != items->end(); ++ it ) {
Ifc2x3::IfcRepresentationItem* representation_item = *it;
if ( IfcGeom::is_shape_collection(representation_item) ) IfcGeom::convert_shapes(*it,shapes);
else {
TopoDS_Shape s;
if (IfcGeom::convert_shape(representation_item,s)) {
shapes.push_back(IfcRepresentationShapeItem(s, get_style(representation_item)));
bool part_succes = false;
if ( items->Size() ) {
for ( Ifc2x3::IfcRepresentationItem::it it = items->begin(); it != items->end(); ++ it ) {
Ifc2x3::IfcRepresentationItem* representation_item = *it;
if ( IfcGeom::is_shape_collection(representation_item) ) {
part_succes |= IfcGeom::convert_shapes(*it, shapes);
} else {
TopoDS_Shape s;
if (IfcGeom::convert_shape(representation_item,s)) {
shapes.push_back(IfcRepresentationShapeItem(s, get_style(representation_item)));
part_succes |= true;
}
}
}
}
return true;
return part_succes;
}