Image unscrambling for certain sites

def calcPositionWithRest(a, f, b, e):
    return a * e + (b if a >= f else 0)

def calcXCoordinateXRest(a, f, b):
    return (a + 61 * b) % f

def calcYCoordinateXRest(a, f, b, e, d):
    c = (1 == d % 2)
    if (c if a < f else not c):
        e = b
        f = 0
    else:
        e = e - b
        f = b
    return (a + 53 * d + 59 * b) % e + f

def calcXCoordinateYRest(a, f, b, e, d):
    c = (1 == d % 2)
    if (c if a < b else not c):
        e = e - f
        b = f
    else:
        e = f
        b = 0
    return (a + 67 * d + f + 71) % e + b

def calcYCoordinateYRest(a, f, b):
    return (a + 73 * b) % f

def shuffle(a,f,b,e,d):
    c = a // b
    h = f // e
    a = a % b
    f = f % e
    u = []
    g = c - 43 * d % c
    if g % c == 0:
        g = (c - 4) % c
    l = h - 47 * d % h
    if l % h == 0:
        l = (h - 4) % h
    if (a > 0) and (f > 0):
        k = g * b
        m = l * e
        u.append({"srcX": k, "srcY": m, "destX": k, "destY": m, "width": a, "height": f})
    if (f > 0):
        for s in range(c):
            p = calcXCoordinateXRest(s,c,d)
            k = calcYCoordinateYRest(p,g,l,h,d)
            p = calcPositionWithRest(p,g,a,b)
            q = k * e
            k = calcPositionWithRest(s,g,a,b)
            m = l * e
            u.append({"srcX": k, "srcY": m, "destX": p, "destY": q, "width": b, "height": f})
    if (a > 0):
        for r in range(h):
            k = calcYCoordinateYRest(r,h,d)
            p = calcXCoordinateYRest(k,g,l,c,d)
            p = p * b
            q = calcPositionWithRest(k,l,f,e)
            k = g * b
            m = calcPositionWithRest(r,l,f,e)
            u.append({"srcX": k, "srcY": m, "destX": p, "destY": q, "width": a, "height": e})
    for s in range(c):
        for r in range(h):
            p = (s + 29 * d + 31 * r) % c
            k = (r + 37 * d + 41 * p) % h
            if p >= calcXCoordinateYRest(k,g,l,c,d):
                q = a
            else:
                q = 0
            if k >= calcYCoordinateXRest(p,g,l,h,d):
                m = f
            else:
                m = 0
            p = p * b + q
            q = k * e + m
            k = s * b + (a if (s >= g) else 0)
            m = r * e + (f if (r >= l) else 0)
            u.append({"srcX": k, "srcY": m, "destX": p, "destY": q, "width": b, "height": e})
    return u