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Question by AlexKZe · Dec 05, 2016 at 02:07 PM · painting

Painting with complex brush

Hi, guys!

I'm developing now some painting functions. And I need to use complex brushes from a sprites with alpha data. At this moment I'm doing it like this: for a trail between two frames and two positions of my pointer I've used Bresenham algorithm for every pixel of brush. Then for optimization reasons I've limited drawable pixels only for those that produce border in direction of movement. But it still produce some artifacts, especially for brushes with complex transparency.

Am I doing right? How this solved, for example, in Photoshop? What algorithms are used for graphic editors?

p.s.: I've checked UnityPaint from Aaron Granberg, but it not solves my problem.alt text

painter.png (150.9 kB)
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