How to join or blend two ellipses together when they overlap

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Was wondering if there was a function for blending ellipses when they make contact with each other. I was thinking about a GraphicsPath object since it adds objects to it's path. If there is a term for this I do not know what it would be so searching has not revealed anything thus far. Thanks for some guidance.

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Posted 6-Dec-14 16:46pm

Idle_Force

Updated 11-Dec-14 12:14pm

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Member 9992980 · Answer 1 · 2014-12-08T16:21:00

You are on the right path with graphicspath.
You create 2 graphics paths and add the ellipses defined by a rectangle.
Create 2 regions based on the path constructors
calling r.Intersect will transform r into the region you are looking for
conversely, calling r2.Intersect will transform r2 into the region you are looking for

VB

Dim path1 As New Drawing2D.GraphicsPath()
path1.AddEllipse(New Rectangle(0, 0, 10, 20))
Dim path2 As New Drawing2D.GraphicsPath()
path2.AddEllipse(New Rectangle(0, 0, 10, 20))
Dim r As New Region(path1)
Dim r2 As New Region(path2)
r.Intersect(path2)