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60 lines
1.4 KiB
Python
60 lines
1.4 KiB
Python
# colormixer
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from turtle import Screen, Turtle, mainloop
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import sys
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sys.setrecursionlimit(20000) # overcomes, for now, an instability of Python 3.0
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class ColorTurtle(Turtle):
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def __init__(self, x, y):
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Turtle.__init__(self)
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self.shape("turtle")
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self.resizemode("user")
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self.shapesize(3,3,5)
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self.pensize(10)
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self._color = [0,0,0]
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self.x = x
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self._color[x] = y
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self.color(self._color)
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self.speed(0)
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self.left(90)
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self.pu()
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self.goto(x,0)
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self.pd()
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self.sety(1)
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self.pu()
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self.sety(y)
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self.pencolor("gray25")
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self.ondrag(self.shift)
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def shift(self, x, y):
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self.sety(max(0,min(y,1)))
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self._color[self.x] = self.ycor()
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self.fillcolor(self._color)
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setbgcolor()
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def setbgcolor():
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screen.bgcolor(red.ycor(), green.ycor(), blue.ycor())
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def main():
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global screen, red, green, blue
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screen = Screen()
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screen.delay(0)
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screen.setworldcoordinates(-1, -0.3, 3, 1.3)
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red = ColorTurtle(0, .5)
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green = ColorTurtle(1, .5)
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blue = ColorTurtle(2, .5)
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setbgcolor()
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writer = Turtle()
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writer.ht()
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writer.pu()
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writer.goto(1,1.15)
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writer.write("DRAG!",align="center",font=("Arial",30,("bold","italic")))
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return "EVENTLOOP"
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if __name__ == "__main__":
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msg = main()
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print(msg)
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mainloop()
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