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Create a compsolid shape for an extrusion of a IfcCompositeProfileDef and process the opening subtraction individually

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Thomas Krijnen
2014-07-24 11:22:31 +00:00
parent 9a1c7af953
commit cf2e82e8f5
2 changed files with 83 additions and 17 deletions
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src/ifcgeom/IfcGeomShapes.cpp
+30 -2
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@@ -96,8 +96,9 @@
#include "../ifcgeom/IfcGeom.h"
bool IfcGeom::convert(const IfcSchema::IfcExtrudedAreaSolid* l, TopoDS_Shape& shape) {
TopoDS_Face face;
TopoDS_Shape face;
if ( ! IfcGeom::convert_face(l->SweptArea(),face) ) return false;
const double height = l->Depth() * IfcGeom::GetValue(GV_LENGTH_UNIT);
gp_Trsf trsf;
IfcGeom::convert(l->Position(),trsf);
@@ -105,7 +106,34 @@ bool IfcGeom::convert(const IfcSchema::IfcExtrudedAreaSolid* l, TopoDS_Shape& sh
gp_Dir dir;
convert(l->ExtrudedDirection(),dir);
shape = BRepPrimAPI_MakePrism(face,height*dir);
shape.Nullify();
if (face.ShapeType() == TopAbs_COMPOUND) {
// For compounds (most likely the result of a IfcCompositeProfileDef)
// create a compound solid shape.
TopExp_Explorer exp(face, TopAbs_FACE);
TopoDS_CompSolid compound;
BRep_Builder builder;
builder.MakeCompSolid(compound);
int num_faces_extruded = 0;
for (; exp.More(); exp.Next(), ++num_faces_extruded) {
builder.Add(compound, BRepPrimAPI_MakePrism(exp.Current(), height*dir));
}
if (num_faces_extruded) {
shape = compound;
}
}
if (shape.IsNull()) {
shape = BRepPrimAPI_MakePrism(face, height*dir);
}
shape.Move(trsf);
return ! shape.IsNull();
}