RoutingStyleDescriptor

• Disabled (default): Each point of the path represents a normal polyline bend point.
• Enabled: Four consecutive points p1, p2, p3, p4 of the resulting edge path need to be interpreted such that p1 is the start point of the cubic bezier curve, p4 is the end point of it and p2, p3 are the two intermediate control points. If p4 is not the last point of the edge path it is at the same time the start point of the next curve. For example, points p1, p2, p3, p4, p5, p6, p7 form a path that consists of two curves: the curve defined by p1, p2, p3, p4 and the curve defined by p4, p5, p6, p7.

In relation to nodes, labels and other edges, the curved and non-curved edges take the same route, for example, both might cross a certain other edge or pass a certain node on its left side. If this property is disabled (default), the curved edges adhere to this.

If enabled, however, curved edges may shortcut and cross additional edges. This can yield to a direct and possibly smoother curved route. Still, intersections with nodes, node labels and edge labels are not allowed.

If this property is greater than zero, the algorithm tries to achieve a more symmetric path for 180-degree turns (u-turns) by specifically handling them. Symmetric turns likely require more space compared to more direct variants. The value of this property must be within interval [0,1], where a higher value indicates more emphasis on symmetry and lower values that symmetry is not important.

This setting influences the symmetry of a single curved route and does not affect symmetry of multiple curves in relation to each other.