curve-to in dc-path%

Extends the path's open sub-path with a Bezier curve to the given point (x3,y3), using the points (x1,y1) and (x2,y2) as control points. If the path has no open sub-path, an exn:fail:contract exception is raised.

A path is not connected to any particular dc<%> object, so setting a dc<%> origin or scale does not affect path operations. Instead, a dc<%>'s origin and scale apply at the time that the path is drawn or used to set a region.

• (send a-dc-path curve-to x1 y1 x2 y2 x3 y3) -> void
     x1 : real number
     y1 : real number
     x2 : real number
     y2 : real number
     x3 : real number
     y3 : real number