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Apply openings in batches sorted by increasing detail

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This commit is contained in:
Thomas Krijnen
2018-11-23 11:45:23 +01:00
parent 4afd104f3d
commit 747ddeb20c
1 changed files with 52 additions and 19 deletions
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src/ifcgeom/IfcGeomFunctions.cpp
+52 -19
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@@ -706,22 +706,31 @@ bool IfcGeom::Kernel::convert_openings_fast(const IfcSchema::IfcProduct* entity,
return true;
}
#else
bool IfcGeom::Kernel::convert_openings_fast(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings,
const IfcGeom::IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcGeom::IfcRepresentationShapeItems& cut_shapes) {
TopTools_ListOfShape opening_shapelist;
for ( IfcSchema::IfcRelVoidsElement::list::it it = openings->begin(); it != openings->end(); ++ it ) {
namespace {
struct opening_sorter {
bool operator()(const std::pair<double, TopoDS_Shape>& a, const std::pair<double, TopoDS_Shape>& b) const {
return a.first > b.first;
}
};
}
bool IfcGeom::Kernel::convert_openings_fast(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings,
const IfcGeom::IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcGeom::IfcRepresentationShapeItems& cut_shapes) {
std::vector< std::pair<double, TopoDS_Shape> > opening_vector;
for (IfcSchema::IfcRelVoidsElement::list::it it = openings->begin(); it != openings->end(); ++it) {
IfcSchema::IfcRelVoidsElement* v = *it;
IfcSchema::IfcFeatureElementSubtraction* fes = v->RelatedOpeningElement();
if ( fes->is(IfcSchema::Type::IfcOpeningElement) ) {
if (fes->is(IfcSchema::Type::IfcOpeningElement)) {
if (!fes->hasRepresentation()) continue;
// Convert the IfcRepresentation of the IfcOpeningElement
gp_Trsf opening_trsf;
if (fes->hasObjectPlacement()) {
try {
convert(fes->ObjectPlacement(),opening_trsf);
convert(fes->ObjectPlacement(), opening_trsf);
} catch (const std::exception& e) {
Logger::Error(e);
} catch (...) {
@@ -736,24 +745,26 @@ bool IfcGeom::Kernel::convert_openings_fast(const IfcSchema::IfcProduct* entity,
IfcSchema::IfcRepresentation::list::ptr reps = prodrep->Representations();
IfcGeom::IfcRepresentationShapeItems opening_shapes;
for ( IfcSchema::IfcRepresentation::list::it it2 = reps->begin(); it2 != reps->end(); ++ it2 ) {
convert_shapes(*it2,opening_shapes);
for (IfcSchema::IfcRepresentation::list::it it2 = reps->begin(); it2 != reps->end(); ++it2) {
convert_shapes(*it2, opening_shapes);
}
for ( unsigned int i = 0; i < opening_shapes.size(); ++ i ) {
for (unsigned int i = 0; i < opening_shapes.size(); ++i) {
TopoDS_Shape opening_shape_solid;
const TopoDS_Shape& opening_shape_unlocated = ensure_fit_for_subtraction(opening_shapes[i].Shape(), opening_shape_solid);
gp_GTrsf gtrsf = opening_shapes[i].Placement();
gtrsf.PreMultiply(opening_trsf);
TopoDS_Shape opening_shape = apply_transformation(opening_shape_unlocated, gtrsf);
opening_shapelist.Append(opening_shape);
opening_vector.push_back(std::make_pair(min_edge_length(opening_shape), opening_shape));
}
}
}
std::sort(opening_vector.begin(), opening_vector.end(), opening_sorter());
// Iterate over the shapes of the IfcProduct
for ( IfcGeom::IfcRepresentationShapeItems::const_iterator it3 = entity_shapes.begin(); it3 != entity_shapes.end(); ++ it3 ) {
TopoDS_Shape entity_shape_solid;
@@ -764,13 +775,35 @@ bool IfcGeom::Kernel::convert_openings_fast(const IfcSchema::IfcProduct* entity,
}
TopoDS_Shape entity_shape = apply_transformation(entity_shape_unlocated, entity_shape_gtrsf);
TopoDS_Shape result;
if (boolean_operation(entity_shape, opening_shapelist, BOPAlgo_CUT, result)) {
cut_shapes.push_back(IfcGeom::IfcRepresentationShapeItem(result, &it3->Style()));
} else {
Logger::Message(Logger::LOG_ERROR, "Opening subtraction failed:", entity->entity);
cut_shapes.push_back(IfcGeom::IfcRepresentationShapeItem(entity_shape, &it3->Style()));
TopoDS_Shape result = entity_shape;
auto it = opening_vector.begin();
auto jt = it;
for (;; ++it) {
if (it == opening_vector.end() || jt->first / it->first > 10.) {
TopTools_ListOfShape opening_list;
for (auto kt = jt; kt < it; ++kt) {
opening_list.Append(kt->second);
}
TopoDS_Shape intermediate_result;
if (boolean_operation(result, opening_list, BOPAlgo_CUT, intermediate_result)) {
result = intermediate_result;
} else {
Logger::Message(Logger::LOG_ERROR, "Opening subtraction failed for " + boost::lexical_cast<std::string>(std::distance(jt, it)) + " openings", entity->entity);
}
jt = it;
}
if (it == opening_vector.end()) {
break;
}
}
cut_shapes.push_back(IfcGeom::IfcRepresentationShapeItem(result, &it3->Style()));
}
return true;
}