5
from pygame.locals import *
6
surfarray = pygame.surfarray
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if not surfarray: raise ImportError
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raise ImportError, 'Error Importing Pygame/surfarray or Numeric'
13
print 'Press the mouse button to advance image.'
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print 'Press the "s" key to save the current image.'
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def surfdemo_show(array_img, name):
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"displays a surface, waits for user to continue"
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screen = pygame.display.set_mode(array_img.shape[:2], 0, 32)
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surfarray.blit_array(screen, array_img)
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pygame.display.set_caption(name)
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e = pygame.event.poll()
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if e.type == MOUSEBUTTONDOWN: break
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elif e.type == KEYDOWN and e.key == K_s:
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pygame.image.save(screen, name+'.bmp')
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elif e.type == QUIT: raise SystemExit
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allblack = N.zeros((128, 128))
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surfdemo_show(allblack, 'allblack')
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striped = N.zeros((128, 128, 3))
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striped[:] = (255, 0, 0)
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striped[:,::3] = (0, 255, 255)
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surfdemo_show(striped, 'striped')
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imagename = os.path.join('data', 'arraydemo.bmp')
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imgsurface = pygame.image.load(imagename)
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imgarray = surfarray.array2d(imgsurface)
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surfdemo_show(imgarray, 'imgarray')
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flipped = imgarray[:,-1:0:-1]
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surfdemo_show(flipped, 'flipped')
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scaledown = imgarray[::2,::2]
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surfdemo_show(scaledown, 'scaledown')
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size = N.array(imgarray.shape)*2
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scaleup = N.zeros(size)
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scaleup[::2,::2] = imgarray
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scaleup[1::2,::2] = imgarray
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scaleup[:,1::2] = scaleup[:,::2]
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surfdemo_show(scaleup, 'scaleup')
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rgbarray = surfarray.array3d(imgsurface)
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redimg = N.array(rgbarray)
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surfdemo_show(redimg, 'redimg')
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soften = N.array(rgbarray)*1
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soften[1:,:] += rgbarray[:-1,:]*8
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soften[:-1,:] += rgbarray[1:,:]*8
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soften[:,1:] += rgbarray[:,:-1]*8
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soften[:,:-1] += rgbarray[:,1:]*8
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surfdemo_show(soften, 'soften')
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src = N.array(rgbarray)
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dest = N.zeros(rgbarray.shape)
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diff = (dest - src) * 0.50
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xfade = src + diff.astype(N.Int)
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surfdemo_show(xfade, 'xfade')
added
removed
examples/arraydemo.py
