Function cross

imagepy/ui/canvas.py:19–23

(r1, r2)

if sys.version_info[0]==2:memoryview=np.getbuffer

def cross(r1, r2):
    x,y = max(r1[0], r2[0]),max(r1[1], r2[1])
    w = min(r1[0]+r1[2], r2[0]+r2[2])-x
    h = min(r1[1]+r1[3], r2[1]+r2[3])-y
    return [x, y, w, h]

def multiply(r, kx, ky):
    r = [r[0]*kx, r[1]*ky, r[2]*kx, r[3]*ky]