#4130 setOnlyValid() option that skips and logs invalid topology

src/serializers/SvgSerializer.h

@@ -550,6 +550,7 @@ protected:
 	bool unify_inputs_;
 	bool mirror_y_;
 	bool mirror_x_;
+	bool only_valid_;
 
 	int profile_threshold_;
 
@@ -717,6 +718,14 @@ public:
 		return unify_inputs_;
 	}
 
+	void setOnlyValid(bool b) {
+		only_valid_ = b;
+	}
+
+	bool getOnlyValid(bool b) const {
+		return only_valid_;
+	}
+
 	void setScale(double s) { scale_ = s; }
 	void setDrawingCenter(double x, double y) {
 		center_x_ = x; center_y_ = y;