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3_bezier_auto_ctrl_points.py
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3_bezier_auto_ctrl_points.py
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import pygame
from pygame.locals import *
import sys
import numpy
from interpylate.interpylate import InterPylate
from interpylate.curve import Curve
def main():
pygame.init()
screen=pygame.display.set_mode((500,500),0,24)
bg=pygame.surface.Surface((500,500),0,24)
clock=pygame.time.Clock()
i=Curve("bezier")
i.set_passthru(((50,250),(450,250)))
i.make_it_easy()
steps=2
points=i.yieldall(60)
c1,c2=i.get_control()[0],i.get_control()[1]
print "control",c1,c2
print "points",points
while 1:
clock.tick(60)
steps+=1
if steps==60:
steps=2
bg.fill((255,255,255))
pygame.draw.aalines(bg,(0,0,0),0,points)#list(points[i] for i in range(steps)))
pygame.draw.aalines(bg,(0,0,0),0,(points[0],points[59]))
pygame.draw.rect(bg,(255,0,0),Rect(50,250,5,5))
pygame.draw.rect(bg,(255,0,0),Rect(450,250,5,5))
pygame.draw.rect(bg,(0,255,0),Rect(c1[0],c1[1],5,5))
pygame.draw.rect(bg,(0,255,0),Rect(c2[0],c2[1],5,5))
screen.blit(bg,(0,0))
pygame.display.update()
if __name__=="__main__":
main()