pygame_clipping.md

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"You keep on learning and learning, and pretty soon you learn something no one has learned before" Richard P. Feynman

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Clipping

Set clipping region

Related to set_clip()

Related Stack Overflow questions:

• Is there a way to restrict the title crawl to certain portion of screen?

Circular clipping region

Related Stack Overflow questions:

• how to make circular surface in PyGame
  

  📁 Minimal example - Clip circular 1

  repl.it/@Rabbid76/PyGame-ClipCircularRegion-1

• How do I focus light or how do I only draw certain circular parts of the window in pygame?
  

  📁 Minimal example - Clip circular 2

  repl.it/@Rabbid76/PyGame-ClipCircularRegion-2

  

  📁 Minimal example - Clip circular 3

  repl.it/@Rabbid76/PyGame-ClipCircularRegion-3

• How do I display a large black rectangle with a moveable transparent circle in pygame?
  

  📁 Minimal example - Clip circular 4

• Can I use an image on a moving object within Pygame as opposed to to a color?
  

  📁 Minimal example - Clip circular 5

• How do you clip a circle (or any non-Rect) from an image in pygame?

Polygon clipping

📁 Minimal example - Clip polygon

Clipping with masks

Related Stack Overflow questions:

• How do I modify this code to add a striped pattern to the star?
  

• Trianglular picture in pygame

📁 Minimal example - Clipping with masks

Convert a pygame.mask.Mask to a pygame.Surface with pygame.mask.Mask.to_surface. Use setsurface to specify the source image and the unsetcolor argument to specify the transparent background:

def clip_surface(surf, mask):
    return mask.to_surface(setsurface = surf.convert_alpha(), unsetcolor = (0, 0, 0, 0))