Point in Poly

Dar Scott dsc at swcp.com
Wed May 29 10:44:53 CDT 2013


I like the idea of trying to get within() to work.

But if that does not work, try computing.

Consider a horizontal line through the point.  Find the points where it crosses the line segments of the sides.  (Take care of the special case of a line segment being on your horizontal line.)  Count the points to the left of your point.  If it is odd, then the point is inside.  

Dar


On May 29, 2013, at 8:17 AM, Ray Horsley wrote:

> Is there a way to determine if a point is inside of a polygon graphic, and not necessarily inside the graphic's containing rectangle?
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