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- from pysketcher import *
- L = 12.
- H = L/6
- W = L/6
- xmax = L
- drawing_tool.set_coordinate_system(xmin=-L, xmax=xmax,
- ymin=-1, ymax=L,
- axis=True,
- instruction_file='tmp_mpl.py')
- x = 0
- def make_dashpot(x):
- d_start = (-L,2*H)
- d = Dashpot(start=d_start, total_length=L+x, width=W,
- bar_length=3*H/2, dashpot_length=L/4, piston_pos=H)
- d.rotate(-90, d_start)
- return d
- def make_spring(x):
- s_start = (-L,4*H)
- s = Spring(start=s_start, length=L+x, bar_length=3*H/2, teeth=True)
- s.rotate(-90, s_start)
- return s
- d = make_dashpot(0)
- s = make_spring(0)
- M = Rectangle((0,H), 4*H, 4*H)
- left_wall = Rectangle((-L,0),H/10,4*H).set_filled_curves(pattern='/')
- ground = Wall(x=[-L/2,L], y=[0,0], thickness=-H/10)
- wheel1 = Circle((H,H/2), H/2)
- wheel2 = wheel1.copy()
- wheel2.translate(point(2*H, 0))
- fig = Compose({
- 'dashpot': d, 'spring': s, 'mass': M, 'left wall': left_wall,
- 'ground': ground, 'wheel1': wheel1, 'wheel2': wheel2})
- #fig.draw()
- s.draw()
- print s
- print s.shapes['bar1']['line'].x, s.shapes['bar1']['line'].y
- print s.shapes['bar2']['line'].x, s.shapes['bar2']['line'].y
- drawing_tool.display()
- raw_input()
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