PiGlassBeta.py 文件源码

def togglepattern():
    global togsw,o,ovl,gui,alphaValue
    # if overlay is inactive, ignore button:
    if togsw == 0:
        print "Pattern button pressed, but ignored --- Crosshair not visible."
    # if overlay is active, drop it, change pattern, then show it again
    else:
        if guivisible == 0:
            # reinitialize array:
            ovl = np.zeros((height, width, 3), dtype=np.uint8)
            patternswitch(ovl,0)
            if o != None:
                camera.remove_overlay(o)
            o = camera.add_overlay(np.getbuffer(ovl), layer=3, alpha=alphaValue)
        else:
            # reinitialize array
            gui = np.zeros((height, width, 3), dtype=np.uint8)
            creategui(gui)
            patternswitch(gui,1)
            if o != None:
                camera.remove_overlay(o)
            o = camera.add_overlay(np.getbuffer(gui), layer=3, alpha=alphaValue)
    return