pygame--颜色变化

#_*_coding:utf-8_*_
import pygame
from pygame.locals   import *
from sys import exit

pygame.init()
screen=pygame.display.set_mode((640,480),0,32)

def create_scales(height):
    red_scale_surface=pygame.surface.Surface((640,height))
    green_scale_surface=pygame.surface.Surface((640,height))
    blue_scale_surface=pygame.surface.Surface((640,height))
    for x in range(640):
        c=int((x/640)*255)
        red=(c,0,0)
        green=(0,c,0)
        blue=(0,0,c)
        line_rect=Rect(x,0,1,height)
        pygame.draw.rect(red_scale_surface,red,line_rect)
        pygame.draw.rect(green_scale_surface,green,line_rect)
        pygame.draw.rect(blue_scale_surface,blue,line_rect)

    return red_scale_surface,green_scale_surface,blue_scale_surface
red_scale,green_scale,blue_scale=create_scales(80)
color=[127,127,127]

while True:
    for event in pygame.event.get():
        if event.type==QUIT:
            exit()
    screen.fill((0,0,0))
    #screen.blit(red_scale,(0,00))
    #screen.blit(green_scale,(0,80))
    #screen.blit(blue_scale,(0,160))
    #获取鼠标点击位置
    x,y=pygame.mouse.get_pos()
    if pygame.mouse.get_pressed()[0]:
        for component in range(3):
            if y > component*80 and y < (component+1)*80:
                color[component]=int((x/639.)*255)
        pygame.display.set_caption("PyGame Color Test-"+str(tuple(color)))
    for component in range(3):
        pos=(int((color[component]/255.)*639),component*80+40)
        pygame.draw.circle(screen,(255,255,255),pos,20)
    pygame.draw.rect(screen,tuple(color),(0,240,640,240))
    pygame.display.update()

通过拖动三个小球，形成不同颜色的混搭颜色。