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1. Also emit Plan and Axis shape representations and IfcTopologyRepresentations if requested. 2. Add serialization for curves. 3. In Python add option to specify representation for which to generate shape.

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This commit is contained in:
Thomas Krijnen
2015-04-22 09:15:48 +00:00
parent 53f625346f
commit c97cf661a2
25 changed files with 495 additions and 112 deletions
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src/ifcwrap/IfcGeomWrapper.i
+47 -19
View File
@@ -145,6 +145,7 @@
name = property(name)
type = property(type)
guid = property(guid)
context = property(context)
transformation = property(transformation)
%}
};
@@ -198,8 +199,14 @@
};
%inline %{
boost::variant<IfcGeom::Element<double>*, IfcGeom::Representation::Representation*> create_shape(IfcGeom::IteratorSettings& settings, IfcParse::IfcLateBoundEntity* instance) {
boost::variant<IfcGeom::Element<double>*, IfcGeom::Representation::Representation*> create_shape(IfcGeom::IteratorSettings& settings, IfcParse::IfcLateBoundEntity* instance, IfcParse::IfcLateBoundEntity* representation = 0) {
if (instance->is(IfcSchema::Type::IfcProduct)) {
if (representation) {
if (!representation->is(IfcSchema::Type::IfcRepresentation)) {
throw IfcParse::IfcException("Supplied representation not of type IfcRepresentation");
}
}
IfcParse::IfcFile* file = instance->entity->file;
IfcSchema::IfcProject::list::ptr projects = file->entitiesByType<IfcSchema::IfcProject>();
@@ -211,28 +218,39 @@
IfcGeom::Kernel kernel;
kernel.setValue(IfcGeom::Kernel::GV_MAX_FACES_TO_SEW, settings.sew_shells() ? 1000 : -1);
kernel.setValue(IfcGeom::Kernel::GV_FORCE_CCW_FACE_ORIENTATION, settings.force_ccw_face_orientation() ? 1 : -1);
kernel.setValue(IfcGeom::Kernel::GV_DIMENSIONALITY, (settings.include_curves() ? (settings.exclude_solids_and_surfaces() ? -1. : 0.) : +1.));
IfcSchema::IfcProduct* product = (IfcSchema::IfcProduct*) instance;
if (!product->hasRepresentation()) {
if (!representation && !product->hasRepresentation()) {
throw IfcParse::IfcException("Representation is NULL");
}
IfcSchema::IfcProductRepresentation* prodrep = product->Representation();
IfcSchema::IfcRepresentation::list::ptr reps = prodrep->Representations();
IfcSchema::IfcRepresentation* representation = 0;
IfcSchema::IfcRepresentation* ifc_representation = (IfcSchema::IfcRepresentation*) representation;
// First, try to find a representation with a 'Body' identifier
for (IfcSchema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
IfcSchema::IfcRepresentation* rep = *it;
if (rep->RepresentationIdentifier() == "Body") {
representation = rep;
break;
if (!ifc_representation) {
// First, try to find a representation based on the settings
for (IfcSchema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
IfcSchema::IfcRepresentation* rep = *it;
if (!settings.exclude_solids_and_surfaces()) {
if (rep->RepresentationIdentifier() == "Body") {
ifc_representation = rep;
break;
}
}
if (settings.include_curves()) {
if (rep->RepresentationIdentifier() == "Plan" || rep->RepresentationIdentifier() == "Axis") {
ifc_representation = rep;
break;
}
}
}
}
// Otherwise, find a representation within the 'Model' context
if (!representation) {
// Otherwise, find a representation within the 'Model' or 'Plan' context
if (!ifc_representation) {
for (IfcSchema::IfcRepresentation::list::it it = reps->begin(); it != reps->end(); ++it) {
IfcSchema::IfcRepresentation* rep = *it;
IfcSchema::IfcRepresentationContext* context = rep->ContextOfItems();
@@ -240,26 +258,36 @@
// TODO: Remove redundancy with IfcGeomIterator.h
if (context->hasContextType()) {
std::set<std::string> context_types;
context_types.insert("model");
context_types.insert("design");
context_types.insert("model view");
if (!settings.exclude_solids_and_surfaces()) {
context_types.insert("model");
context_types.insert("design");
context_types.insert("model view");
}
if (settings.include_curves()) {
context_types.insert("plan");
}
std::string context_type_lc = context->ContextType();
for (std::string::iterator c = context_type_lc.begin(); c != context_type_lc.end(); ++c) {
*c = tolower(*c);
}
if (context_types.find(context_type_lc) != context_types.end()) {
representation = rep;
ifc_representation = rep;
}
}
}
}
if (!representation) {
throw IfcParse::IfcException("No IfcRepresentations with a 'Body' RepresentationIdentifier found");
if (!ifc_representation) {
if (reps->size()) {
// Return a random representation
ifc_representation = *reps->begin();
} else {
throw IfcParse::IfcException("No suitable IfcRepresentation found");
}
}
IfcSchema::IfcRepresentationContext* ctx = representation->ContextOfItems();
IfcSchema::IfcRepresentationContext* ctx = ifc_representation->ContextOfItems();
if (!ctx->is(IfcSchema::Type::IfcGeometricRepresentationContext)) {
throw IfcParse::IfcException("Context not of type IfcGeometricRepresentationContext");
}
@@ -281,7 +309,7 @@
kernel.setValue(IfcGeom::Kernel::GV_PRECISION, precision);
IfcGeom::BRepElement<double>* brep = kernel.create_brep_for_representation_and_product<double>(settings, representation, product);
IfcGeom::BRepElement<double>* brep = kernel.create_brep_for_representation_and_product<double>(settings, ifc_representation, product);
if (!brep) {
throw IfcParse::IfcException("Failed to process shape");
}