Bugfix: movement between objects in sequential printing mode was going too far away. #2013 #2007

xs/src/Point.cpp

@@ -190,6 +190,12 @@ Point::projection_onto(const Line &line) const
     }
 }
 
+Point
+Point::negative() const
+{
+    return Point(-this->x, -this->y);
+}
+
 Point
 operator+(const Point& point1, const Point& point2)
 {

xs/src/Point.hpp

@@ -43,6 +43,7 @@ class Point
     double ccw(const Line &line) const;
     Point projection_onto(const MultiPoint &poly) const;
     Point projection_onto(const Line &line) const;
+    Point negative() const;
     
     #ifdef SLIC3RXS
     void from_SV(SV* point_sv);