Hi Crusoe - elliptical arcs will be in the next beta. Here is what it looks like:



There will be an "Elliptical" checkbox for Arc/Center. If you check it, the angle box is hidden and an elliptical arc is created as you described.

This does have some cool properties, since the elliptical arc will actually start and end on the points you pick, unlike a circular arc which uses the ending point as the angle which will only touch there if the point you pick is at the arc's radius.

It is also easy to do 90 degree elliptical arcs.

There are some slightly odd things as well, like you can't do a 180 degree elliptical arc because when the points are lined up in a straight line it doesn't have any way to calculate the length of the other ellipse axis. And it kind of oscillates in a bit of a strange manner as you trace the mouse around the center point. But that's ok.

I don't think it will be possible to make any of the other arc commands do ellipses, since there are not unique solutions to many of them. For instance you can't do an ellipse through 3 points because there are multiple possible ellipses that can fit through 3 points. But Arc/Center works because nailing down the center point and first ellipse axis length nails down the constraints enough.


Thanks for the feedback!

- Michael