SVG paths for canvas
Written by Richard Heyes, on 3rd September 2015
As stated elsewhere canvas paths are (unnecessarily) verbose. The W3C has attempted to
aid the issue by introducing support for svg paths in the new Path2D object.
This new object, however, is not currently widely supported. So RGraph provides a
work-around using the RGraph.path function.
This is a description of that function and a version of it that has been extracted from the RGraph code and works standalone.