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import matplotlib.pyplot as plt
from shapely import LineString, get_point
from shapely.plotting import plot_line, plot_points
from figures import SIZE, BLUE, GRAY, set_limits
line = LineString([(0, 0), (1, 1), (0, 2), (2, 2), (3, 1), (1, 0)])
line_bounds = line.bounds
ax_range = [int(line_bounds[0] - 1.0), int(line_bounds[2] + 1.0)]
ay_range = [int(line_bounds[1] - 1.0), int(line_bounds[3] + 1.0)]
fig = plt.figure(1, figsize=(SIZE[0], 1.5 * SIZE[1]), dpi=90)
# 1
ax = fig.add_subplot(221)
plot_line(line, ax, add_points=False, color=GRAY)
plot_points(get_point(line, 0), ax=ax, color=GRAY)
offset = line.parallel_offset(0.5, 'left', join_style=1)
plot_line(offset, ax=ax, add_points=False, color=BLUE)
ax.set_title('a) left, round')
set_limits(ax, -2, 4, -1, 3)
#2
ax = fig.add_subplot(222)
plot_line(line, ax, add_points=False, color=GRAY)
plot_points(get_point(line, 0), ax=ax, color=GRAY)
offset = line.parallel_offset(0.5, 'left', join_style=2)
plot_line(offset, ax=ax, add_points=False, color=BLUE)
ax.set_title('b) left, mitred')
set_limits(ax, -2, 4, -1, 3)
#3
ax = fig.add_subplot(223)
plot_line(line, ax, add_points=False, color=GRAY)
plot_points(get_point(line, 0), ax=ax, color=GRAY)
offset = line.parallel_offset(0.5, 'left', join_style=3)
plot_line(offset, ax=ax, add_points=False, color=BLUE)
ax.set_title('c) left, beveled')
set_limits(ax, -2, 4, -1, 3)
#4
ax = fig.add_subplot(224)
plot_line(line, ax, add_points=False, color=GRAY)
plot_points(get_point(line, 0), ax=ax, color=GRAY)
offset = line.parallel_offset(0.5, 'right', join_style=1)
plot_line(offset, ax=ax, add_points=False, color=BLUE)
ax.set_title('d) right, round')
set_limits(ax, -2, 4, -1, 3)
plt.show()
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