how to smooth a hand-drawn line with Graphics2D

Question

I've used this code to implement a freehand drawing tool in Java and Graphics2D. So I have a Path2D made up of a lot points. Is there an algorithm to smooth this line? I don't mean anti-aliasing, I mean something like converting the path to a path of bezier curves. Something like this, but with a Path2D as input. I would think this a recurring problem but I couldn't really find something useful.

I was thinking after I posted my question I could maybe use the PathIterator for the algorithm I linked to. Will try later when I'm home. — Nicolas Mommaerts, Apr 30 '12 at 06:22

score 9 · Accepted Answer · edited May 23 '17 at 10:27

9

I've found what I needed at: http://javagraphics.blogspot.com/2010/06/shapes-implementing-freehand-pencil.html

Edit: and since I now know the exact term for this problem (curve fitting) I can google it better and also found this post: Java curve fitting library

Edit: also look at http://johnsogg.blogspot.com/2010/01/cardinal-splines-and-catmull-rom.html

edited May 23 '17 at 10:27

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answered May 01 '12 at 14:49

Nicolas Mommaerts

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I accepted my own answer, couldn't do it immediately though, SO forces you to wait 4 hours. – Nicolas Mommaerts May 02 '12 at 08:17

how to smooth a hand-drawn line with Graphics2D

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