Maccala improvement: Adaptive Curves

Picture to People makes vector based drawing using Maccala API. It's very powerful and robust, so P2P has many tools that make/use 2D rendering.

Anyway, there was a small problem when drawing curves. They are more difficult to render when they have these two properties at the same time:
1) to have very strong or sharp curvatures;
2) to be too thick.

In this situation, some curves were not drawn smoothly as they should be. It's what I show you in the first image below. You see a curve skeleton and its version with a thickness of 150. Basically the thin curve shows how smooth it really is, but the thick one is not that smooth.

I improved Maccala and now it has adaptive curve drawing. In practice, it means Maccala can draw perfectly even very thick regions that are too curved. The second image shows the same curve as before, but perfectly drawn using my adaptive rendering algorithm.

Now Picture to People can draw super professional 2D vector curves even in the more unfavorable situations. It can help, for example, to draw in higher quality a thick outline of some very weird and complex True Type fonts.

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