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hierarchy helper ifc4 RepresentationContexts compatibility

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This commit is contained in:
Thomas Krijnen
2021-07-29 16:23:09 +02:00
parent bb93545b35
commit 7c3fcc26f4
1 changed files with 20 additions and 2 deletions
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src/ifcparse/IfcHierarchyHelper.cpp
+20 -2
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@@ -861,6 +861,23 @@ typename Schema::IfcShapeRepresentation* IfcHierarchyHelper<Schema>::addEmptyRep
return shape_rep;
}
namespace {
// In IFC4 the IfcContext.RepresentationContexts has been made optional, so we need
// some boiler plate to push back to a list that might be optional.
template <typename T, typename U>
void push_back_to_maybe_optional(boost::optional<typename T::ptr>& t, U* u) {
if (!t) {
t->emplace(new T);
}
(*t)->push(u);
}
template <typename T, typename U>
void push_back_to_maybe_optional(T& t, U* u) {
t->push(u);
}
}
template <typename Schema>
typename Schema::IfcGeometricRepresentationContext* IfcHierarchyHelper<Schema>::getRepresentationContext(const std::string& s) {
typename std::map<std::string, typename Schema::IfcGeometricRepresentationContext*>::const_iterator it = contexts.find(s);
@@ -870,11 +887,12 @@ typename Schema::IfcGeometricRepresentationContext* IfcHierarchyHelper<Schema>::
if (!project) {
project = addProject();
}
typename Schema::IfcRepresentationContext::list::ptr project_contexts = project->RepresentationContexts();
auto project_contexts = project->RepresentationContexts();
typename Schema::IfcGeometricRepresentationContext* context = new typename Schema::IfcGeometricRepresentationContext(
boost::none, s, 3, 1e-5, addPlacement3d(), addDoublet<typename Schema::IfcDirection>(0, 1));
addEntity(context);
project_contexts->push(context);
push_back_to_maybe_optional(project_contexts, context);
project->setRepresentationContexts(project_contexts);
return contexts[s] = context;
}