arotaplace.py

Created on December 16, 2024

692 Bytes

def permutation_blocs(img : Image, zone=None):
    '''entrée : une image chargée avec le module PIL
                la zone de l'image à traiter
       sortie : aucune, la permutation des quadrants est effectuée "sur place"
    '''
    if zone is None : zone=(0,0,img.width,img.height)
    g,h,d,b = zone
    k = (d-g)//2
    assert (b-h)//2 == k
    for x in range(g,g+k):
        for y in range(h,h+k):
            tmp = img.getpixel( (x,y) )
            img.putpixel( (x,y), img.getpixel( (x,y+k) ) )
            img.putpixel( (x,y+k), img.getpixel( (x+k,y+k) ) )
            img.putpixel( (x+k,y+k), img.getpixel( (x+k,y) ) )
            img.putpixel( (x+k,y), tmp )

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