#!/usr/bin/env python import VisionEgg VisionEgg.start_default_logging(); VisionEgg.watch_exceptions() from VisionEgg.Core import * import pygame from pygame.locals import * import numpy screen = get_default_screen() screen.set( bgcolor = (0.0,0.0,0.0) ) # black (RGB) white_data = numpy.ones((100,200,3),dtype=numpy.uint8)*255 red_data = white_data.copy() red_data[:,:,1:] = 0 # zero non-red channels blue_data = white_data.copy() blue_data[:,:,:-1] = 0 # zero non-blue channels frame_timer = FrameTimer() # start frame counter/timer count = 0 quit_now = 0 # This style of main loop is an alternative to using the # VisionEgg.FlowControl module. while not quit_now: for event in pygame.event.get(): if event.type in (QUIT,KEYDOWN,MOUSEBUTTONDOWN): quit_now = 1 screen.clear() count = (count+1) % 3 if count == 0: pixels = white_data elif count == 1: pixels = red_data elif count == 2: pixels = blue_data screen.put_pixels(pixels=pixels, position=(screen.size[0]/2.0,screen.size[1]/2.0), anchor="center") swap_buffers() # display what we've drawn frame_timer.tick() # register frame draw with timer frame_timer.log_histogram()