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Return shape for arbitrary representation items in ifcopenshell.geom.create_shape()

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aothms
2015-10-22 12:04:49 +02:00
parent f3af39546b
commit fdf1b29682
3 changed files with 82 additions and 26 deletions
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src/ifcgeom/IfcRegister.cpp
+9
View File
@@ -24,6 +24,15 @@ using namespace IfcSchema;
using namespace IfcUtil;
bool IfcGeom::Kernel::convert_shapes(const IfcBaseClass* l, IfcRepresentationShapeItems& r) {
if (shape_type(l) != ST_SHAPELIST) {
TopoDS_Shape shp;
if (convert_shape(l, shp)) {
r.push_back(IfcGeom::IfcRepresentationShapeItem(shp, get_style(l->as<IfcSchema::IfcRepresentationItem>())));
return true;
}
return false;
}
#include "IfcRegisterConvertShapes.h"
Logger::Message(Logger::LOG_ERROR,"No operation defined for:",l->entity);
return false;
src/ifcopenshell-python/ifcopenshell/geom/occ_utils.py
+12 -3
View File
@@ -52,8 +52,14 @@ def get_bounding_box_center(bbox):
def create_shape_from_serialization(brep_object):
brep_data, occ_shape = None, None
try: brep_data = brep_object.geometry.brep_data
except: pass
is_product_shape = True
try:
brep_data = brep_object.geometry.brep_data
except:
try:
brep_data = brep_object.brep_data
is_product_shape = False
except: pass
if not brep_data: return tuple(brep_object, None)
try:
@@ -62,5 +68,8 @@ def create_shape_from_serialization(brep_object):
occ_shape = ss.Shape(ss.NbShapes())
except: pass
return tuple(brep_object, occ_shape)
if is_product_shape:
return tuple(brep_object, occ_shape)
else:
return occ_shape
src/ifcwrap/IfcGeomWrapper.i
+61 -23
View File
@@ -72,17 +72,35 @@
}
}
// A visitor
%{
struct ShapeRTTI : public boost::static_visitor<PyObject*>
{
PyObject* operator()(IfcGeom::Element<double>* elem) const {
IfcGeom::SerializedElement<double>* serialized_elem = dynamic_cast<IfcGeom::SerializedElement<double>*>(elem);
IfcGeom::TriangulationElement<double>* triangulation_elem = dynamic_cast<IfcGeom::TriangulationElement<double>*>(elem);
if (triangulation_elem) {
return SWIG_NewPointerObj(SWIG_as_voidptr(triangulation_elem), SWIGTYPE_p_IfcGeom__TriangulationElementT_double_t, SWIG_POINTER_OWN);
} else if (serialized_elem) {
return SWIG_NewPointerObj(SWIG_as_voidptr(serialized_elem), SWIGTYPE_p_IfcGeom__SerializedElementT_double_t, SWIG_POINTER_OWN);
}
}
PyObject* operator()(IfcGeom::Representation::Representation* representation) const {
IfcGeom::Representation::Serialization* serialized_representation = dynamic_cast<IfcGeom::Representation::Serialization*>(representation);
IfcGeom::Representation::Triangulation<double>* triangulated_representation = dynamic_cast<IfcGeom::Representation::Triangulation<double>*>(representation);
if (serialized_representation) {
return SWIG_NewPointerObj(SWIG_as_voidptr(serialized_representation), SWIGTYPE_p_IfcGeom__Representation__Serialization, SWIG_POINTER_OWN);
} else if (triangulated_representation) {
return SWIG_NewPointerObj(SWIG_as_voidptr(triangulated_representation), SWIGTYPE_p_IfcGeom__Representation__TriangulationT_double_t, SWIG_POINTER_OWN);
}
}
};
%}
// Note that these elements ARE to be owned by SWIG/Python
%typemap(out) boost::variant<IfcGeom::Element<double>*, IfcGeom::Representation::Representation*> {
// See which type is set and return appropriate
IfcGeom::Element<double>* elem = boost::get<IfcGeom::Element<double>*>($1);
IfcGeom::SerializedElement<double>* serialized_elem = dynamic_cast<IfcGeom::SerializedElement<double>*>(elem);
IfcGeom::TriangulationElement<double>* triangulation_elem = dynamic_cast<IfcGeom::TriangulationElement<double>*>(elem);
if (triangulation_elem) {
$result = SWIG_NewPointerObj(SWIG_as_voidptr(triangulation_elem), SWIGTYPE_p_IfcGeom__TriangulationElementT_double_t, SWIG_POINTER_OWN);
} else if (serialized_elem) {
$result = SWIG_NewPointerObj(SWIG_as_voidptr(serialized_elem), SWIGTYPE_p_IfcGeom__SerializedElementT_double_t, SWIG_POINTER_OWN);
}
$result = boost::apply_visitor(ShapeRTTI(), $1);
}
// This does not seem to work:
@@ -218,25 +236,25 @@
%inline %{
boost::variant<IfcGeom::Element<double>*, IfcGeom::Representation::Representation*> create_shape(IfcGeom::IteratorSettings& settings, IfcParse::IfcLateBoundEntity* instance, IfcParse::IfcLateBoundEntity* representation = 0) {
IfcParse::IfcFile* file = instance->entity->file;
IfcSchema::IfcProject::list::ptr projects = file->entitiesByType<IfcSchema::IfcProject>();
if (projects->size() != 1) {
throw IfcParse::IfcException("Not a single IfcProject instance");
}
IfcSchema::IfcProject* project = *projects->begin();
IfcGeom::Kernel kernel;
kernel.setValue(IfcGeom::Kernel::GV_MAX_FACES_TO_SEW, settings.sew_shells() ? 1000 : -1);
kernel.setValue(IfcGeom::Kernel::GV_DIMENSIONALITY, (settings.include_curves() ? (settings.exclude_solids_and_surfaces() ? -1. : 0.) : +1.));
std::pair<std::string, double> length_unit = kernel.initializeUnits(project->UnitsInContext());
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>();
if (projects->size() != 1) {
throw IfcParse::IfcException("Not a single IfcProject instance");
}
IfcSchema::IfcProject* project = *projects->begin();
IfcGeom::Kernel kernel;
kernel.setValue(IfcGeom::Kernel::GV_MAX_FACES_TO_SEW, settings.sew_shells() ? 1000 : -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 (!representation && !product->hasRepresentation()) {
@@ -318,7 +336,6 @@
if (context->hasPrecision()) {
precision = context->Precision();
}
std::pair<std::string, double> length_unit = kernel.initializeUnits(project->UnitsInContext());
precision *= length_unit.second;
// Some arbitrary factor that has proven to work better for the models in the set of test files.
@@ -342,7 +359,28 @@
throw IfcParse::IfcException("No element to return based on provided settings");
}
} else {
throw IfcParse::IfcException("Only obtaining representations for IfcProduct instances is currently supported");
if (!representation) {
if (instance->is(IfcSchema::Type::IfcRepresentationItem) || instance->is(IfcSchema::Type::IfcRepresentation)) {
IfcGeom::IfcRepresentationShapeItems shapes;
if (kernel.convert_shapes(instance, shapes)) {
IfcGeom::ElementSettings element_settings(settings, kernel.getValue(IfcGeom::Kernel::GV_LENGTH_UNIT), IfcSchema::Type::ToString(instance->type()));
IfcGeom::Representation::BRep brep(element_settings, instance->entity->id(), shapes);
try {
if (settings.use_brep_data()) {
return new IfcGeom::Representation::Serialization(brep);
} else if (!settings.disable_triangulation()) {
return new IfcGeom::Representation::Triangulation<double>(brep);
}
} catch (...) {
throw IfcParse::IfcException("Error during shape serialization");
}
} else {
throw IfcParse::IfcException("Geometrical element not understood");
}
}
} else {
throw IfcParse::IfcException("Invalid additional representation specified");
}
}
}
%}