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- IfcGeom: Major performance improvement by only sewing faces of IfcConnectedFaceSets when needed for boolean operations

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- Automatic tests for several well known IFC files on the Internet
- IfcBlender: Make visibility in render consistent with 3d view
- Some compatibility for Ifc2x files with IfcShapeRepresentations and RepresentationIdentifier 'IAI'
This commit is contained in:
Thomas Krijnen
2012-03-01 21:17:06 +00:00
parent a9a5f8dc69
commit 2b27b86b34
7 changed files with 395 additions and 12 deletions
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src/ifcgeom/IfcGeomShapes.cpp
+16 -2
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@@ -132,8 +132,8 @@ bool IfcGeom::convert(const Ifc2x3::IfcPolygonalBoundedHalfSpace::ptr l, TopoDS_
if ( ! IfcGeom::convert_wire(l->PolygonalBoundary(),wire) || ! wire.Closed() ) return false;
gp_Trsf trsf;
convert(l->Position(),trsf);
TopoDS_Shape extrusion = BRepPrimAPI_MakePrism(BRepBuilderAPI_MakeFace(wire),gp_Vec(0,0,20000.0));
gp_Trsf down; down.SetTranslation(gp_Vec(0,0,-10000.0));
TopoDS_Shape extrusion = BRepPrimAPI_MakePrism(BRepBuilderAPI_MakeFace(wire),gp_Vec(0,0,200.0));
gp_Trsf down; down.SetTranslation(gp_Vec(0,0,-100.0));
extrusion.Move(down*trsf);
shape = BRepAlgoAPI_Cut(extrusion,halfspace);
return true;
@@ -179,20 +179,33 @@ bool IfcGeom::convert(const Ifc2x3::IfcBooleanClippingResult::ptr l, TopoDS_Shap
return true;
}
bool IfcGeom::convert(const Ifc2x3::IfcConnectedFaceSet::ptr l, TopoDS_Shape& shape) {
#ifdef FACESET_AS_COMPOUND
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
#else
BRepOffsetAPI_Sewing builder;
builder.SetTolerance(0.01);
#endif
Ifc2x3::IfcFace::list faces = l->CfsFaces();
bool facesAdded = false;
for( Ifc2x3::IfcFace::it it = faces->begin(); it != faces->end(); ++ it ) {
TopoDS_Face face;
if ( IfcGeom::convert_face(*it,face) ) {
#ifdef FACESET_AS_COMPOUND
builder.Add(compound,face);
#else
builder.Add(face);
#endif
facesAdded = true;
} else {
Ifc::LogMessage("Warning","Invalid face:",(*it)->entity);
}
}
if ( ! facesAdded ) return false;
#ifdef FACESET_AS_COMPOUND
shape = compound;
#else
builder.Perform();
shape = builder.SewedShape();
try {
@@ -200,6 +213,7 @@ bool IfcGeom::convert(const Ifc2x3::IfcConnectedFaceSet::ptr l, TopoDS_Shape& sh
solid.LimitTolerance(0.01);
shape = solid.SolidFromShell(TopoDS::Shell(shape));
} catch(...) {}
#endif
return true;
}
bool IfcGeom::convert(const Ifc2x3::IfcMappedItem::ptr l, ShapeList& shapes) {