python game練習5_2

#! /usr/bin/env python2.7# -*- coding:utf-8 -*-#File:PG5.py#Date:2013-7-7#Author:wangyuimport pygamefrom pygame.locals import *from sys import exitpygame.init()screen=pygame.display.set_mode((640,480),0,32)color1=(221,99,20)color2=(96,130,51)factor=0.def blend_color(color1,color2,blend_factor):    r1,g1,b1=color1    r2,g2,b2=color2    r=r1+(r2-r1)*blend_factor    g=g1+(g2-g1)*blend_factor    b=b1+(b2-b1)*blend_factor    return int(r),int(g),int(b)while True:    for event in pygame.event.get():        if event.type ==QUIT:            exit()    screen.fill((255,255,255))    tri=[(0,120),(639,100),(639,140)]    pygame.draw.polygon(screen,(0,255,0),tri)    pygame.draw.circle(screen,(0,0,0),(int(factor*639.0),120),10)    x,y=pygame.mouse.get_pos()    if pygame.mouse.get_pos()[0]:        factor =x/639.0        pygame.display.set_caption("pygame Color Blend Test -%3.f"%factor)    color=blend_color(color1,color2,factor)    pygame.draw.rect(screen,color,(0,240,640,240))    pygame.display.update()

下面是出現的介面:

注釋和原博主地址