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