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Engineering LibreTexts

3.21: Anti-Aliasing

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  • Anti-aliasing is a graphics technique for making text and shapes look less blocky by adding a little bit of blur to their edges. It takes a little more computation time to draw with anti-aliasing, so although the graphics may look better, your program may run slower (but only just a little).

    If you zoom in on an aliased line and an anti-aliased line, they look like this:

    Figure 15

    To make Pygame’s text use anti-aliasing, just pass True for the second parameter of the render() method. The pygame.draw.aaline() and pygame.draw.aalines() functions have the same parameters as pygame.draw.line() and pygame.draw.lines(), except they will draw anti-aliased (smooth) lines instead of aliased (blocky) lines.

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