Unless I’m missing something here (as I am very new to Sketchup so I could just be clueless about this…)
I don’t see how you can push/pull a flat drawn oval from just one of it’s axis edge midpoints.
In other words, let’s say I want to draw a wedding ring which has an ellipse (oval) shaped “comfort fit” shape to it.
So I first draw a circle on the horizontal axis. I then delete the inner circle and just have the round line edge. I then used the plugin (tools on surface) to draw an ellipse which will give me a very close proximity to the shape I want. But before I use the “follow me tool” to create a wedding band along the circle path…
I’d like to be able to pick a left or right midpoint of the oval(elipse) and pull/drag from one of the edges of the 2d oval in order to control how elliptical I make the oval before I use the “follow me tool”.
I seem to only be able to make the entire oval equally bigger or smaller and not really be able to control how the dimensions change.
Must I have to draw a perfect oval that I like from scratch first?