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Expose the option to sew shells from connected face sets

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This commit is contained in:
Thomas Krijnen
2014-06-08 19:32:25 +02:00
parent 604358b48e
commit bb2a983a00
3 changed files with 88 additions and 74 deletions
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src/ifcgeom/IfcGeom.h
+1
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@@ -81,6 +81,7 @@ namespace IfcGeom {
const int DISABLE_OPENING_SUBTRACTIONS = 1 << 0; const int DISABLE_OPENING_SUBTRACTIONS = 1 << 0;
const int DISABLE_OBJECT_PLACEMENT = 1 << 1; const int DISABLE_OBJECT_PLACEMENT = 1 << 1;
const int SEW_SHELLS = 1 << 2;
bool convert_wire_to_face(const TopoDS_Wire& wire, TopoDS_Face& face); bool convert_wire_to_face(const TopoDS_Wire& wire, TopoDS_Face& face);
bool convert_curve_to_wire(const Handle(Geom_Curve)& curve, TopoDS_Wire& wire); bool convert_curve_to_wire(const Handle(Geom_Curve)& curve, TopoDS_Wire& wire);
src/ifcgeom/IfcGeomFunctions.cpp
+86 -74
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@@ -692,90 +692,102 @@ bool IfcGeom::fill_nonmanifold_wires_with_planar_faces(TopoDS_Shape& shape) {
std::string IfcGeom::create_brep_data(Ifc2x3::IfcProduct* ifc_product, unsigned int settings) { std::string IfcGeom::create_brep_data(Ifc2x3::IfcProduct* ifc_product, unsigned int settings) {
const bool no_openings = !!(settings & DISABLE_OPENING_SUBTRACTIONS); const bool no_openings = !!(settings & DISABLE_OPENING_SUBTRACTIONS);
const bool no_placement = !!(settings & DISABLE_OBJECT_PLACEMENT); const bool no_placement = !!(settings & DISABLE_OBJECT_PLACEMENT);
const bool sew_shells = !!(settings & SEW_SHELLS);
if (!ifc_product->hasRepresentation()) return ""; const double old_max_faces_to_sew = GetValue(GV_MAX_FACES_TO_SEW);
const double inf = std::numeric_limits<double>::infinity();
SetValue(GV_MAX_FACES_TO_SEW, sew_shells ? inf : -inf);
Ifc2x3::IfcProductRepresentation* prod_rep = ifc_product->Representation(); std::string brep_data = "";
Ifc2x3::IfcRepresentation::list li = prod_rep->Representations();
Ifc2x3::IfcShapeRepresentation* shape_rep = 0; if (ifc_product->hasRepresentation()) {
for (Ifc2x3::IfcRepresentation::it i = li->begin(); i != li->end(); ++i) {
const std::string representation_identifier = (*i)->RepresentationIdentifier(); Ifc2x3::IfcProductRepresentation* prod_rep = ifc_product->Representation();
if ((*i)->is(Ifc2x3::Type::IfcShapeRepresentation) && (representation_identifier == "Body" || representation_identifier == "Facetation")) { Ifc2x3::IfcRepresentation::list li = prod_rep->Representations();
shape_rep = (Ifc2x3::IfcShapeRepresentation*) *i; Ifc2x3::IfcShapeRepresentation* shape_rep = 0;
break; for (Ifc2x3::IfcRepresentation::it i = li->begin(); i != li->end(); ++i) {
const std::string representation_identifier = (*i)->RepresentationIdentifier();
if ((*i)->is(Ifc2x3::Type::IfcShapeRepresentation) && (representation_identifier == "Body" || representation_identifier == "Facetation")) {
shape_rep = (Ifc2x3::IfcShapeRepresentation*) *i;
break;
}
} }
}
if (!shape_rep) return ""; if (!!shape_rep) {
IfcGeom::IfcRepresentationShapeItems shapes; IfcGeom::IfcRepresentationShapeItems shapes;
if (!IfcGeom::convert_shapes(shape_rep,shapes)) { if (IfcGeom::convert_shapes(shape_rep,shapes)) {
return "";
} gp_Trsf trsf;
try {
IfcGeom::convert(ifc_product->ObjectPlacement(),trsf);
} catch (...) {}
gp_Trsf trsf; // Does the IfcElement have any IfcOpenings?
try { // Note that openings for IfcOpeningElements are not processed
IfcGeom::convert(ifc_product->ObjectPlacement(),trsf); IfcSchema::IfcRelVoidsElement::list openings = IfcSchema::IfcRelVoidsElement::list();
} catch (...) {} if ( ifc_product->is(IfcSchema::Type::IfcElement) && !ifc_product->is(IfcSchema::Type::IfcOpeningElement) ) {
IfcSchema::IfcElement::ptr element = reinterpret_pointer_cast<IfcSchema::IfcProduct,IfcSchema::IfcElement>(ifc_product);
// Does the IfcElement have any IfcOpenings? openings = element->HasOpenings();
// Note that openings for IfcOpeningElements are not processed }
IfcSchema::IfcRelVoidsElement::list openings = IfcSchema::IfcRelVoidsElement::list(); // Is the IfcElement a decomposition of an IfcElement with any IfcOpeningElements?
if ( ifc_product->is(IfcSchema::Type::IfcElement) && !ifc_product->is(IfcSchema::Type::IfcOpeningElement) ) { if ( ifc_product->is(IfcSchema::Type::IfcBuildingElementPart ) ) {
IfcSchema::IfcElement::ptr element = reinterpret_pointer_cast<IfcSchema::IfcProduct,IfcSchema::IfcElement>(ifc_product); IfcSchema::IfcBuildingElementPart::ptr part = reinterpret_pointer_cast<IfcSchema::IfcProduct,IfcSchema::IfcBuildingElementPart>(ifc_product);
openings = element->HasOpenings();
}
// Is the IfcElement a decomposition of an IfcElement with any IfcOpeningElements?
if ( ifc_product->is(IfcSchema::Type::IfcBuildingElementPart ) ) {
IfcSchema::IfcBuildingElementPart::ptr part = reinterpret_pointer_cast<IfcSchema::IfcProduct,IfcSchema::IfcBuildingElementPart>(ifc_product);
#ifdef USE_IFC4 #ifdef USE_IFC4
IfcSchema::IfcRelAggregates::list decomposes = part->Decomposes(); IfcSchema::IfcRelAggregates::list decomposes = part->Decomposes();
for ( IfcSchema::IfcRelAggregates::it it = decomposes->begin(); it != decomposes->end(); ++ it ) { for ( IfcSchema::IfcRelAggregates::it it = decomposes->begin(); it != decomposes->end(); ++ it ) {
#else #else
IfcSchema::IfcRelDecomposes::list decomposes = part->Decomposes(); IfcSchema::IfcRelDecomposes::list decomposes = part->Decomposes();
for ( IfcSchema::IfcRelDecomposes::it it = decomposes->begin(); it != decomposes->end(); ++ it ) { for ( IfcSchema::IfcRelDecomposes::it it = decomposes->begin(); it != decomposes->end(); ++ it ) {
#endif #endif
IfcSchema::IfcObjectDefinition::ptr obdef = (*it)->RelatingObject(); IfcSchema::IfcObjectDefinition::ptr obdef = (*it)->RelatingObject();
if ( obdef->is(IfcSchema::Type::IfcElement) ) { if ( obdef->is(IfcSchema::Type::IfcElement) ) {
IfcSchema::IfcElement::ptr element = reinterpret_pointer_cast<IfcSchema::IfcObjectDefinition,IfcSchema::IfcElement>(obdef); IfcSchema::IfcElement::ptr element = reinterpret_pointer_cast<IfcSchema::IfcObjectDefinition,IfcSchema::IfcElement>(obdef);
openings->push(element->HasOpenings()); openings->push(element->HasOpenings());
}
}
}
if (openings && openings->Size() && !no_openings) {
IfcGeom::IfcRepresentationShapeItems opened_shapes;
try {
IfcGeom::convert_openings(ifc_product,openings,shapes,trsf,opened_shapes);
} catch(...) {
Logger::Message(Logger::LOG_ERROR,"Error processing openings for:",ifc_product->entity);
}
shapes = opened_shapes;
}
if (!no_placement) {
for ( IfcGeom::IfcRepresentationShapeItems::iterator it = shapes.begin(); it != shapes.end(); ++ it ) {
it->prepend(trsf);
}
}
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
for ( IfcGeom::IfcRepresentationShapeItems::const_iterator it = shapes.begin(); it != shapes.end(); ++ it ) {
const TopoDS_Shape& s = it->Shape();
const gp_GTrsf& trsf = it->Placement();
bool trsf_valid = false;
gp_Trsf _trsf;
try {
_trsf = trsf.Trsf();
trsf_valid = true;
} catch (...) {}
const TopoDS_Shape moved_shape = trsf_valid ? s.Moved(_trsf) :
BRepBuilderAPI_GTransform(s,trsf,true).Shape();
builder.Add(compound,moved_shape);
}
std::stringstream sstream;
BRepTools::Write(compound,sstream);
brep_data = sstream.str();
} }
} }
} }
if (openings && openings->Size() && !no_openings) { SetValue(GV_MAX_FACES_TO_SEW, old_max_faces_to_sew);
IfcGeom::IfcRepresentationShapeItems opened_shapes;
try { return brep_data;
IfcGeom::convert_openings(ifc_product,openings,shapes,trsf,opened_shapes);
} catch(...) {
Logger::Message(Logger::LOG_ERROR,"Error processing openings for:",ifc_product->entity);
}
shapes = opened_shapes;
}
if (!no_placement) {
for ( IfcGeom::IfcRepresentationShapeItems::iterator it = shapes.begin(); it != shapes.end(); ++ it ) {
it->prepend(trsf);
}
}
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
for ( IfcGeom::IfcRepresentationShapeItems::const_iterator it = shapes.begin(); it != shapes.end(); ++ it ) {
const TopoDS_Shape& s = it->Shape();
const gp_GTrsf& trsf = it->Placement();
bool trsf_valid = false;
gp_Trsf _trsf;
try {
_trsf = trsf.Trsf();
trsf_valid = true;
} catch (...) {}
const TopoDS_Shape moved_shape = trsf_valid ? s.Moved(_trsf) :
BRepBuilderAPI_GTransform(s,trsf,true).Shape();
builder.Add(compound,moved_shape);
}
std::stringstream sstream;
BRepTools::Write(compound,sstream);
return sstream.str();
} }
src/ifcwrap/Interface.h
+1
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@@ -105,6 +105,7 @@ namespace IfcParse {
const int DISABLE_OPENING_SUBTRACTIONS = 1 << 0; const int DISABLE_OPENING_SUBTRACTIONS = 1 << 0;
const int DISABLE_OBJECT_PLACEMENT = 1 << 1; const int DISABLE_OBJECT_PLACEMENT = 1 << 1;
const int SEW_SHELLS = 1 << 2;
} }
std::ostream& operator<< (std::ostream& os, const IfcParse::IfcFile& f); std::ostream& operator<< (std::ostream& os, const IfcParse::IfcFile& f);