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b992a0e102
requires them. Disable executable bits and shebang lines in test and benchmark files in order to prevent using a random system python, and in source files of modules which don't provide command line interface. Fixed shebang line to use python3 executable in the unittestgui script.
109 lines
2.9 KiB
Python
Executable file
109 lines
2.9 KiB
Python
Executable file
#!/usr/bin/env python3
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""" turtlegraphics-example-suite:
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tdemo_forest.py
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Displays a 'forest' of 3 'breadth-first-trees'
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similar to the one from example tree.
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For further remarks see xtx_tree.py
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This example is a 'breadth-first'-rewrite of
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a Logo program written by Erich Neuwirth. See:
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http://homepage.univie.ac.at/erich.neuwirth/
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"""
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from turtle import Turtle, colormode, tracer, mainloop
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from random import randrange
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from time import clock
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def symRandom(n):
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return randrange(-n,n+1)
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def randomize( branchlist, angledist, sizedist ):
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return [ (angle+symRandom(angledist),
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sizefactor*1.01**symRandom(sizedist))
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for angle, sizefactor in branchlist ]
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def randomfd( t, distance, parts, angledist ):
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for i in range(parts):
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t.left(symRandom(angledist))
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t.forward( (1.0 * distance)/parts )
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def tree(tlist, size, level, widthfactor, branchlists, angledist=10, sizedist=5):
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# benutzt Liste von turtles und Liste von Zweiglisten,
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# fuer jede turtle eine!
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if level > 0:
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lst = []
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brs = []
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for t, branchlist in list(zip(tlist,branchlists)):
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t.pensize( size * widthfactor )
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t.pencolor( 255 - (180 - 11 * level + symRandom(15)),
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180 - 11 * level + symRandom(15),
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0 )
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t.pendown()
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randomfd(t, size, level, angledist )
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yield 1
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for angle, sizefactor in branchlist:
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t.left(angle)
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lst.append(t.clone())
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brs.append(randomize(branchlist, angledist, sizedist))
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t.right(angle)
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for x in tree(lst, size*sizefactor, level-1, widthfactor, brs,
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angledist, sizedist):
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yield None
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def start(t,x,y):
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colormode(255)
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t.reset()
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t.speed(0)
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t.hideturtle()
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t.left(90)
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t.penup()
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t.setpos(x,y)
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t.pendown()
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def doit1(level, pen):
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pen.hideturtle()
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start(pen, 20, -208)
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t = tree( [pen], 80, level, 0.1, [[ (45,0.69), (0,0.65), (-45,0.71) ]] )
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return t
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def doit2(level, pen):
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pen.hideturtle()
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start(pen, -135, -130)
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t = tree( [pen], 120, level, 0.1, [[ (45,0.69), (-45,0.71) ]] )
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return t
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def doit3(level, pen):
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pen.hideturtle()
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start(pen, 190, -90)
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t = tree( [pen], 100, level, 0.1, [[ (45,0.7), (0,0.72), (-45,0.65) ]] )
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return t
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# Hier 3 Baumgeneratoren:
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def main():
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p = Turtle()
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p.ht()
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tracer(75,0)
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u = doit1(6, Turtle(undobuffersize=1))
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s = doit2(7, Turtle(undobuffersize=1))
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t = doit3(5, Turtle(undobuffersize=1))
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a = clock()
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while True:
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done = 0
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for b in u,s,t:
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try:
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b.__next__()
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except:
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done += 1
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if done == 3:
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break
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tracer(1,10)
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b = clock()
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return "runtime: %.2f sec." % (b-a)
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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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