| | |
| | """ turtle-example-suite: |
| | |
| | tdemo_bytedesign.py |
| | |
| | An example adapted from the example-suite |
| | of PythonCard's turtle graphics. |
| | |
| | It's based on an article in BYTE magazine |
| | Problem Solving with Logo: Using Turtle |
| | Graphics to Redraw a Design |
| | November 1982, p. 118 - 134 |
| | |
| | ------------------------------------------- |
| | |
| | Due to the statement |
| | |
| | t.delay(0) |
| | |
| | in line 152, which sets the animation delay |
| | to 0, this animation runs in "line per line" |
| | mode as fast as possible. |
| | """ |
| |
|
| | from turtle import Turtle, mainloop |
| | from time import perf_counter as clock |
| |
|
| | |
| | |
| | class Designer(Turtle): |
| |
|
| | def design(self, homePos, scale): |
| | self.up() |
| | for i in range(5): |
| | self.forward(64.65 * scale) |
| | self.down() |
| | self.wheel(self.position(), scale) |
| | self.up() |
| | self.backward(64.65 * scale) |
| | self.right(72) |
| | self.up() |
| | self.goto(homePos) |
| | self.right(36) |
| | self.forward(24.5 * scale) |
| | self.right(198) |
| | self.down() |
| | self.centerpiece(46 * scale, 143.4, scale) |
| | self.getscreen().tracer(True) |
| |
|
| | def wheel(self, initpos, scale): |
| | self.right(54) |
| | for i in range(4): |
| | self.pentpiece(initpos, scale) |
| | self.down() |
| | self.left(36) |
| | for i in range(5): |
| | self.tripiece(initpos, scale) |
| | self.left(36) |
| | for i in range(5): |
| | self.down() |
| | self.right(72) |
| | self.forward(28 * scale) |
| | self.up() |
| | self.backward(28 * scale) |
| | self.left(54) |
| | self.getscreen().update() |
| |
|
| | def tripiece(self, initpos, scale): |
| | oldh = self.heading() |
| | self.down() |
| | self.backward(2.5 * scale) |
| | self.tripolyr(31.5 * scale, scale) |
| | self.up() |
| | self.goto(initpos) |
| | self.setheading(oldh) |
| | self.down() |
| | self.backward(2.5 * scale) |
| | self.tripolyl(31.5 * scale, scale) |
| | self.up() |
| | self.goto(initpos) |
| | self.setheading(oldh) |
| | self.left(72) |
| | self.getscreen().update() |
| |
|
| | def pentpiece(self, initpos, scale): |
| | oldh = self.heading() |
| | self.up() |
| | self.forward(29 * scale) |
| | self.down() |
| | for i in range(5): |
| | self.forward(18 * scale) |
| | self.right(72) |
| | self.pentr(18 * scale, 75, scale) |
| | self.up() |
| | self.goto(initpos) |
| | self.setheading(oldh) |
| | self.forward(29 * scale) |
| | self.down() |
| | for i in range(5): |
| | self.forward(18 * scale) |
| | self.right(72) |
| | self.pentl(18 * scale, 75, scale) |
| | self.up() |
| | self.goto(initpos) |
| | self.setheading(oldh) |
| | self.left(72) |
| | self.getscreen().update() |
| |
|
| | def pentl(self, side, ang, scale): |
| | if side < (2 * scale): return |
| | self.forward(side) |
| | self.left(ang) |
| | self.pentl(side - (.38 * scale), ang, scale) |
| |
|
| | def pentr(self, side, ang, scale): |
| | if side < (2 * scale): return |
| | self.forward(side) |
| | self.right(ang) |
| | self.pentr(side - (.38 * scale), ang, scale) |
| |
|
| | def tripolyr(self, side, scale): |
| | if side < (4 * scale): return |
| | self.forward(side) |
| | self.right(111) |
| | self.forward(side / 1.78) |
| | self.right(111) |
| | self.forward(side / 1.3) |
| | self.right(146) |
| | self.tripolyr(side * .75, scale) |
| |
|
| | def tripolyl(self, side, scale): |
| | if side < (4 * scale): return |
| | self.forward(side) |
| | self.left(111) |
| | self.forward(side / 1.78) |
| | self.left(111) |
| | self.forward(side / 1.3) |
| | self.left(146) |
| | self.tripolyl(side * .75, scale) |
| |
|
| | def centerpiece(self, s, a, scale): |
| | self.forward(s); self.left(a) |
| | if s < (7.5 * scale): |
| | return |
| | self.centerpiece(s - (1.2 * scale), a, scale) |
| |
|
| | def main(): |
| | t = Designer() |
| | t.speed(0) |
| | t.hideturtle() |
| | t.getscreen().delay(0) |
| | t.getscreen().tracer(0) |
| | at = clock() |
| | t.design(t.position(), 2) |
| | et = clock() |
| | return "runtime: %.2f sec." % (et-at) |
| |
|
| | if __name__ == '__main__': |
| | msg = main() |
| | print(msg) |
| | mainloop() |
| |
|
