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Use fuzzy boolean subtraction if available

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Remove collinear points from polygonal halfspace boundary
Lookup styled items on boolean operation operands

Fixes https://github.com/IfcOpenShell/IfcOpenShell/issues/6
Fixes https://sourceforge.net/p/ifcopenshell/discussion/1782717/thread/a7f99e41/?limit=25#5c36
This commit is contained in:
aothms
2016-01-22 17:27:28 +01:00
parent a0db3a3406
commit 4be7da1a43
4 changed files with 181 additions and 7 deletions
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src/ifcgeom/IfcGeom.h
+9 -1
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@@ -109,6 +109,7 @@ public:
bool convert_openings(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings, const IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcRepresentationShapeItems& cut_shapes);
bool convert_openings_fast(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings, const IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcRepresentationShapeItems& cut_shapes);
IfcSchema::IfcSurfaceStyleShading* get_surface_style(IfcSchema::IfcRepresentationItem* item);
const IfcSchema::IfcRepresentationItem* find_item_carrying_style(const IfcSchema::IfcRepresentationItem* item);
bool create_solid_from_compound(const TopoDS_Shape& compound, TopoDS_Shape& solid);
bool is_compound(const TopoDS_Shape& shape);
bool is_convex(const TopoDS_Wire& wire);
@@ -123,7 +124,10 @@ public:
void setValue(GeomValue var, double value);
double getValue(GeomValue var) const;
bool fill_nonmanifold_wires_with_planar_faces(TopoDS_Shape& shape);
void remove_redundant_points_from_loop(TColgp_SequenceOfPnt& polygon, bool closed, double tol=-1.);
void remove_duplicate_points_from_loop(TColgp_SequenceOfPnt& polygon, bool closed, double tol=-1.);
void remove_collinear_points_from_loop(TColgp_SequenceOfPnt& polygon, bool closed, double tol=-1.);
bool wire_to_sequence_of_point(const TopoDS_Wire&, TColgp_SequenceOfPnt&);
void sequence_of_point_to_wire(const TColgp_SequenceOfPnt&, TopoDS_Wire&, bool closed);
std::pair<std::string, double> initializeUnits(IfcSchema::IfcUnitAssignment*);
@@ -135,6 +139,10 @@ public:
const SurfaceStyle* get_style(const IfcSchema::IfcRepresentationItem* representation_item);
template <typename T> std::pair<IfcSchema::IfcSurfaceStyle*, T*> get_surface_style(const IfcSchema::IfcRepresentationItem* representation_item) {
// For certain representation items, most notably boolean operands,
// a style definition might reside on one of its operands.
representation_item = find_item_carrying_style(representation_item);
IfcSchema::IfcStyledItem::list::ptr styled_items = representation_item->StyledByItem();
for (IfcSchema::IfcStyledItem::list::it jt = styled_items->begin(); jt != styled_items->end(); ++jt) {
#ifdef USE_IFC4