Check if pixel belongs to shape ?

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ExpertNoob
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Joined: 2011-02-06T08:09:27-07:00
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Check if pixel belongs to shape ?

Post by ExpertNoob »

Does MagickCore have means of testing if a given pixel is in a given region of the image (circle, polygon, ..) ?
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snibgo
Posts: 12159
Joined: 2010-01-23T23:01:33-07:00
Authentication code: 1151
Location: England, UK

Re: Check if pixel belongs to shape ?

Post by snibgo »

Draw the shape as white on a black background. Find the colour of the pixel. If it's white, it's inside the shape. Black means it's outside. Grey means it's on the edge.
snibgo's IM pages: im.snibgo.com
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