> You seem to be trying to implement an algorithm that needs > three points with only two inputs... you are bound to fail.
Well he seems to want exactly 180 degrees of a circle, so 2 points is fine. 3 would allow for any sub arc. > One method I have seen is to click-drag-release to get the > two endpoints and then interactively pick up the mouse position > to track the height of the arc until a second click finishes > the input. You would have to back out the actual radius of > the circle if you needed it, but two inputs don't magically > become three. Yeah, I was thinking of a GUI that let you that displays a protractor with 2 angles so you could an arbitrary fraction (0-100%) of a circle. Then once that's done, allow for a thickness handle/knob. _______________________________________________ vox-tech mailing list [email protected] http://lists.lugod.org/mailman/listinfo/vox-tech
