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Jan 3rd, 2014, 07:57 AM
#11
Re: Plot ellipse through apex and two other points
Reversing the atan2 arguments didn't change anything obvious. I won't be able to debug this without help, so I'd appreciate assistance. I've attached all the code: 1 file VB.Net + 2 files C# in a zip. You only have to start a Forms project and drop your preferred version into the form code. For C#, build the 2 files. Then run. This version draws the ellipse and its bounding rectangle (when visible) as well as the ellipse centre. Just drag the red points around, an ellipse will flit by sooner or later!
@Logophobic: Once this is sorted out it shouldn't be too hard to make a version with 2F+P. I suspect it will in fact be easier.
EllipseThroughThreePoints.zip
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Last edited by boops boops; Jan 3rd, 2014 at 08:04 AM.
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