我可以在 Pygame 中的移动对象上使用图像而不是颜色吗? [英] Can I use an image on a moving object within Pygame as opposed to to a color?

问题描述

 def star1():全局角度x = int(math.cos(angle) * 100) + 800y = int(math.sin(angle) * 65) + 400pygame.draw.circle(屏幕，白色，(x，y)，17)角度 += 0.02

这里的 .draw.circle 参数 pygame 只允许使用 RGB 颜色为图形着色.我想知道是否有一种方法可以将图像作为颜色传递，或者使用不同的方法来让我在对象/圆圈上放置图像.圆圈会四处移动，因此图像也需要在圆圈移动时与圆圈保持一致.

解决方案

• 创建一个透明的

  导入pygamepygame.init()窗口 = pygame.display.set_mode((300, 300))时钟 = pygame.time.Clock()def create_circular_image(大小，图像):clip_image = pygame.Surface((大小，大小)，pygame.SRCALPHA)pygame.draw.circle(clip_image, (255, 255, 255), (size//2, size//2), size//2)image_rect = my_image.get_rect(center = clip_image.get_rect().center)clip_image.blit(my_image, image_rect, special_flags=pygame.BLEND_RGBA_MIN)返回剪辑图像def create_test_image():图像 = pygame.Surface((100, 100))ts, w, h, c1, c2 = 25, 100, 100, (255, 64, 64), (32, 64, 255)[pygame.draw.rect(image, c1 if (x+y) % 2 == 0 else c2, (x*ts, y*ts, ts, ts))对于范围内的 x((w+ts-1)//ts) 对于范围内的 y((h+ts-1)//ts)]返回图像my_image = create_test_image()circle_image = create_circular_image(100, my_image)rect = circle_image.get_rect(center = window.get_rect().center)运行 = 真运行时:时钟滴答(60)对于 pygame.event.get() 中的事件:如果 event.type == pygame.QUIT:运行 = 错误键 = pygame.key.get_pressed()rect.x += (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]) * 5rect.y += (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * 5window.fill((64, 64, 64))window.blit(circular_image, rect)pygame.display.flip()pygame.quit()出口()

  ---

  另见:

  • 如何在 PyGame 中制作圆形曲面
  • 如何在 PyGame 中仅填充窗口的某些圆形部分?
  • 剪辑

     def star1():
          global angle
          x = int(math.cos(angle) * 100) + 800
          y = int(math.sin(angle) * 65) + 400
          pygame.draw.circle(screen, white, (x, y), 17)
          angle += 0.02
  

  The parameters pygame gives for the .draw.circle here only allow for an RGB color to be used to color the figure. I am wondering if there is a way I can pass an image as a color, or use a different method that allows me to place an image on the object/circle. The circles move around so the image also needs to stay with the circle as it moves.

  解决方案

  • Create a transparent pygame.Surface with the desired size

  • Draw a white circle in the middle of the Surface

  • Blend the image (my_image) on this Surface using the blend mode BLEND_RGBA_MIN:

  size = 100
  circular_image = pygame.Surface((size, size), pygame.SRCALPHA)
  pygame.draw.circle(circular_image, (255, 255, 255), (size//2, size//2), size//2)
  image_rect = my_image.get_rect(center = circular_image.get_rect().center)
  circular_image.blit(my_image, image_rect, special_flags=pygame.BLEND_RGBA_MIN)
  

  ---

  Minimal example:

  import pygame
  
  pygame.init()
  window = pygame.display.set_mode((300, 300))
  clock = pygame.time.Clock()
  
  def create_circular_image(size, image):
      clip_image = pygame.Surface((size, size), pygame.SRCALPHA)
      pygame.draw.circle(clip_image, (255, 255, 255), (size//2, size//2), size//2)
      image_rect = my_image.get_rect(center = clip_image.get_rect().center)
      clip_image.blit(my_image, image_rect, special_flags=pygame.BLEND_RGBA_MIN)
      return clip_image
  
  def create_test_image():
      image = pygame.Surface((100, 100))
      ts, w, h, c1, c2 = 25, 100, 100, (255, 64, 64), (32, 64, 255)
      [pygame.draw.rect(image, c1 if (x+y) % 2 == 0 else c2, (x*ts, y*ts, ts, ts)) 
          for x in range((w+ts-1)//ts) for y in range((h+ts-1)//ts)]
      return image
  
  my_image = create_test_image()
  circular_image = create_circular_image(100, my_image)
  
  rect = circular_image.get_rect(center = window.get_rect().center)
  run = True
  while run:
      clock.tick(60)
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              run = False
  
      keys = pygame.key.get_pressed()
      rect.x += (keys[pygame.K_RIGHT] - keys[pygame.K_LEFT]) * 5
      rect.y += (keys[pygame.K_DOWN] - keys[pygame.K_UP]) * 5            
  
      window.fill((64, 64, 64))
      window.blit(circular_image, rect)
      pygame.display.flip()
  
  pygame.quit()
  exit()
  

  ---

  See also:

  • how to make circular surface in PyGame
  • How to fill only certain circular parts of the window in PyGame?
  • Clipping

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