44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
#!/usr/bin/env python
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from game import *
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from math import sin, pi
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class Lissajous(Game):
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def __init__(self, fx, fy):
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self.fx = fx
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self.fy = fy
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self.width = 1000
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self.height = 600
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self.time = 0
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self.old_point = self.get_pos()
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self.new_point = self.old_point
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self.reset = False
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super(Lissajous, self).__init__(self.width, self.height, 100)
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def get_pos(self):
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return ( int( (1+sin(2*pi*self.fx*self.time)) / 2 * self.width), int( (1+sin(2*pi*self.fy*self.time)) / 2 * self.height) )
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def on_update(self, dtime):
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self.old_point = self.new_point
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self.time += dtime
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self.new_point = self.get_pos()
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def on_render(self, srfc):
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WHITE = (255,255,255)
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BLACK = (0,0,0)
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if self.reset:
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srfc.fill(BLACK)
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self.reset = False
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pygame.draw.line( srfc, WHITE, self.old_point, self.new_point )
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def on_event(self, event):
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if event.type == MOUSEBUTTONDOWN and event.button == 1:
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self.reset = True
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else:
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super(Lissajous,self).on_event(event)
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if __name__ == "__main__":
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Lissajous(0.5,0.325).on_execute()
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