PathPoint.getTangent
void getTangent(gsk.path.Path path, gsk.types.PathDirection direction, out graphene.vec2.Vec2 tangent)Gets the tangent of the path at the point.
Note that certain points on a path may not have a single tangent, such as sharp turns. At such points, there are two tangents -- the direction of the path going into the point, and the direction coming out of it. The direction argument lets you choose which one to get.
If the path is just a single point (e.g. a circle with radius zero), then tangent is set to 0, 0.
If you want to orient something in the direction of the path, [gsk.path_point.PathPoint.getRotation] may be more convenient to use.
Parameters
path | the path that point is on |
direction | the direction for which to return the tangent |
tangent | Return location for the tangent at the point |