--elevation-ref-guid setElevationRefGuid

src/ifcconvert/IfcConvert.cpp

@@ -354,7 +354,7 @@ int main(int argc, char** argv) {
     short precision;
 	double section_height;
 	std::string svg_scale, svg_center;
-	std::string section_ref, elevation_ref;
+	std::string section_ref, elevation_ref, elevation_ref_guid;
 	// "none", "full" or "left"
 	std::string storey_height_display;
 	SvgSerializer::storey_height_display_types svg_storey_height_display = SvgSerializer::SH_NONE;
@@ -376,9 +376,11 @@ int main(int argc, char** argv) {
 			"When using --scale, specifies the location in the range [0 1]x[0 1] around which"
 			"to center the drawings. Example 0.5x0.5 (default).")
 		("section-ref", po::value<std::string>(&section_ref),
-			"Element at which vertical cross sections should be created")
+			"Element at which cross sections should be created")
 		("elevation-ref", po::value<std::string>(&elevation_ref),
-			"Element at which vertical elevations should be created")
+			"Element at which drawings should be created")
+		("elevation-ref-guid", po::value<std::string>(&elevation_ref_guid),
+			"Element guids at which drawings should be created")
 		("auto-section",
 			"Creates SVG cross section drawings automatically based on model extents")
 		("auto-elevation",
@@ -1003,6 +1005,9 @@ int main(int argc, char** argv) {
 		if (vmap.count("elevation-ref")) {
 			static_cast<SvgSerializer*>(serializer.get())->setElevationRef(elevation_ref);
 		}
+		if (vmap.count("elevation-ref-guid")) {
+			static_cast<SvgSerializer*>(serializer.get())->setElevationRefGuid(elevation_ref_guid);
+		}
 		if (vmap.count("auto-section")) {
 			static_cast<SvgSerializer*>(serializer.get())->setAutoSection(true);
 		}

src/serializers/SvgSerializer.cpp

@@ -543,7 +543,12 @@ void SvgSerializer::write(const IfcGeom::BRepElement<real_t>* brep_obj) {
 	const gp_Trsf& trsf = brep_obj->transformation().data();
 
 	const bool is_section = (section_ref_ && object_type && *section_ref_ == *object_type);
-	const bool is_elevation = (elevation_ref_ && object_type && *elevation_ref_ == *object_type);
+	bool is_elevation = false;
+	if (elevation_ref_ && object_type) {
+		is_elevation = *elevation_ref_ == *object_type;
+	} else if (elevation_ref_guid_) {
+		is_elevation = *elevation_ref_guid_ == brep_obj->guid();
+	}
 
 	if (is_section || is_elevation) {
 		BRepBuilderAPI_Transform make_transform_global(compound_local, trsf, true);

src/serializers/SvgSerializer.h

@@ -167,7 +167,7 @@ protected:
 	float_item_list xcoords, ycoords, radii;
 	size_t xcoords_begin, ycoords_begin, radii_begin;
 
-	boost::optional<std::string> section_ref_, elevation_ref_;
+	boost::optional<std::string> section_ref_, elevation_ref_, elevation_ref_guid_;
 	
 	std::list<geometry_data> element_buffer_;
 
@@ -242,8 +242,15 @@ public:
 	void setSectionRef(const boost::optional<std::string>& s) { 
 		section_ref_ = s; 
 	}
+
 	void setElevationRef(const boost::optional<std::string>& s) {
 		elevation_ref_ = s; 
+		elevation_ref_guid_ = boost::none;
+	}
+
+	void setElevationRefGuid(const boost::optional<std::string>& s) {
+		elevation_ref_ = boost::none;
+		elevation_ref_guid_ = s;
 	}
 
 	void setAutoSection(bool b) {