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I am creating an app that allows the user to do some hand-drawing. The problem is I draw lines between the points where the user moved his finger so the resulting shape is somewhat jagged.
My question is how can I smooth the drawing? What is the best algorithm for dealing with this kind of situation?
You could use some kind of curve fitting (maybe Bezier curve) to do it for you.
There is also this very nice example of how it could work. I could not find source code for it but i think that creator of this one has used algorithm from Graphics Gems 1. You could find c code for it here and i have found on SO also this.