Function create_segment_representations

src/examples/IfcAlignment.cpp:182–204

creates representations for each IfcAlignmentSegment per CT 4.1.7.1.1.4 https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/concepts/Product_Shape/Product_Geometric_Representation/Alignment_Geometry/Alignment_Geometry_-_Segments/content.html

// creates representations for each IfcAlignmentSegment per CT 4.1.7.1.1.4
// https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/concepts/Product_Shape/Product_Geometric_Representation/Alignment_Geometry/Alignment_Geometry_-_Segments/content.html
void create_segment_representations(IfcHierarchyHelper<Schema>& file, Schema::IfcLocalPlacement* global_placement, Schema::IfcGeometricRepresentationSubContext* segment_axis_subcontext, typename aggregate_of<typename Schema::IfcSegment>::ptr curve_segments, typename aggregate_of<typename Schema::IfcObjectDefinition>::ptr segments) {
    auto cs_iter = curve_segments->begin();
    auto s_iter = segments->begin();
    for (; cs_iter != curve_segments->end(); cs_iter++, s_iter++) {
        auto curve_segment = *cs_iter;
        auto alignment_segment = (*s_iter)->as<Schema::IfcAlignmentSegment>();

        typename aggregate_of<typename Schema::IfcRepresentationItem>::ptr representation_items(new aggregate_of<typename Schema::IfcRepresentationItem>());
        representation_items->push(curve_segment);

        auto axis_representation = new Schema::IfcShapeRepresentation(segment_axis_subcontext, std::string("Axis"), std::string("Segment"), representation_items);
        file.addEntity(axis_representation);

        typename aggregate_of<typename Schema::IfcRepresentation>::ptr representations(new aggregate_of<typename Schema::IfcRepresentation>());
        representations->push(axis_representation);

        auto product = new Schema::IfcProductDefinitionShape(boost::none, boost::none, representations);
        file.addEntity(product);

        alignment_segment->setObjectPlacement(global_placement);
        alignment_segment->setRepresentation(product);
    }
}

int main() {
    IfcHierarchyHelper<Schema> file;