Bill Kendrick wrote: > On Tue, Mar 31, 2009 at 07:21:36PM -0700, Bill Broadley wrote: >> Some. Not sure what you are getting at though. You want to draw 180 degrees >> of a circle with the end points defined by p1 and p2? What if you want to >> make an upside down rainbow? Or 1/2 of one? > > I only want to draw all 180 degress if y1==y2. Otherwise, it'd be > less of the arc. (See my ASCII diagrams)
Hrm, I don't think ascii is going to help, at least for me. Ah, ok, I have an idea of what you think you want to do. I think you do need 3 points. A center, radius, range of angles. Basically there are an infinite number of 180 degree curves that go through 2 points, and there's no way to know how high the peak should be, nor which exact fraction of a circle to display. So for your diagrams how do you decide that in case 1 you do 1/2 a circle and the circle doesn't go above P2, but in case #3 you get 60% of a circle. _______________________________________________ vox-tech mailing list [email protected] http://lists.lugod.org/mailman/listinfo/vox-tech
