Implements arc-to according to the HTML Canvas spec.
A convenience function that implements the HTML arc_to
functionality.
After this, the current point will be the point where the circle with the given radius touches the line from x1, y1 to x2, y2.
X coordinate of first control point
Y coordinate of first control point
X coordinate of second control point
Y coordinate of second control point
Radius of the circle
Implements arc-to according to the HTML Canvas spec.
A convenience function that implements the HTML arc_to
functionality.
After this, the current point will be the point where the circle with the given radius touches the line from x1, y1 to x2, y2.