SVG serialization UnifyInputs option

src/serializers/SvgSerializer.cpp

@@ -79,6 +79,7 @@
 
 #include "../ifcparse/IfcGlobalId.h"
 #include "../ifcgeom_schema_agnostic/base_utils.h"
+#include "../ifcgeom_schema_agnostic/boolean_utils.h"
 
 #include <boost/format.hpp>
 #include <boost/tokenizer.hpp>
@@ -1179,7 +1180,14 @@ void SvgSerializer::write(const geometry_data& data) {
 		// Iterate over components of compound to have better chance of matching section edges to closed wires
 		for (; it.More(); it.Next(), ++dash_it) {
 
-			const TopoDS_Shape& subshape = it.Value();
+			const TopoDS_Shape& subshape_before_unification = it.Value();
+			TopoDS_Shape subshape;
+
+			if (unify_inputs_) {
+				subshape = IfcGeom::util::unify(subshape_before_unification, 1. - 6);
+			} else {
+				subshape = subshape_before_unification;
+			}
 
 			Bnd_Box bb;
 			try {

src/serializers/SvgSerializer.h

@@ -515,6 +515,7 @@ protected:
 	bool use_namespace_, use_hlr_poly_, use_prefiltering_, always_project_, polygonal_;
 	bool emit_building_storeys_;
 	bool no_css_;
+	bool unify_inputs_;
 
 	int profile_threshold_;
 
@@ -566,6 +567,7 @@ public:
 		, polygonal_(false)
 		, emit_building_storeys_(true)
 		, no_css_(false)
+		, unify_inputs_(false)
 		, profile_threshold_(-1)
 		, file(0)
 		, storey_(0)
@@ -662,6 +664,14 @@ public:
 		no_css_ = b;
 	}
 
+	void setUnifyInputs(bool b) {
+		unify_inputs_ = b;
+	}
+
+	bool getUnifyInputs() const {
+		return unify_inputs_;
+	}
+
 	void setScale(double s) { scale_ = s; }
 	void setDrawingCenter(double x, double y) {
 		center_x_ = x; center_y_ = y;