Fix placements

src/ifcgeom/schema/mapping.cpp

@@ -223,6 +223,15 @@ taxonomy::item* mapping::map_impl(const IfcSchema::IfcPolyLoop* inst) {
 taxonomy::item* mapping::map_impl(const IfcSchema::IfcCartesianPoint* inst) {
 	auto coords = inst->Coordinates();
 	return new taxonomy::point3(
+		coords.size() >= 1 ? coords[0] * length_unit_ : 0.,
+		coords.size() >= 2 ? coords[1] * length_unit_ : 0.,
+		coords.size() >= 3 ? coords[2] * length_unit_ : 0.
+	);
+}
+
+taxonomy::item* mapping::map_impl(const IfcSchema::IfcDirection* inst) {
+	auto coords = inst->DirectionRatios();
+	return new taxonomy::direction3(
 		coords.size() >= 1 ? coords[0] : 0.,
 		coords.size() >= 2 ? coords[1] : 0.,
 		coords.size() >= 3 ? coords[2] : 0.
@@ -320,6 +329,7 @@ taxonomy::item* mapping::map_impl(const IfcSchema::IfcLocalPlacement* inst) {
 			break;
 		}
 	}
+	return m4;
 }
 
 IfcSchema::IfcProduct::list::ptr mapping::products_represented_by(const IfcSchema::IfcRepresentation* representation) {

src/ifcgeom/schema/mapping.i

@@ -118,7 +118,7 @@ BIND(IfcPolyLoop);
 #endif
 
 BIND(IfcCartesianPoint);
-// BIND(IfcDirection);
+BIND(IfcDirection);
 // BIND(IfcAxis2Placement2D);
 BIND(IfcAxis2Placement3D);
 // BIND(IfcAxis1Placement);

src/ifcgeom/schema_agnostic/Converter.cpp

@@ -42,6 +42,9 @@ ifcopenshell::geometry::NativeElement* ifcopenshell::geometry::Converter::create
 
 	// @todo decide how to get placement from product
 	auto placement = (taxonomy::geom_item*) mapping_->map(product);
+	if (placement == nullptr) {
+		return nullptr;
+	}
 	kernel_->convert(rep_item, shapes);
 
 	shape = new ifcopenshell::geometry::Representation::BRep(s, representation_id_builder.str(), shapes);

src/ifcgeom/taxonomy.h

@@ -53,8 +53,8 @@ struct matrix4 : public item {
 		auto Z = z.normalized();
 		components << 
 			X(0), Y(0), Z(0), o(0),
-			X(1), Y(1), Z(1), o(0),
-			X(2), Y(2), Z(2), o(0),
+			X(1), Y(1), Z(1), o(1),
+			X(2), Y(2), Z(2), o(2),
 			0, 0, 0, 1.;
 	}