def __init__(self, filepath, agent, num_guppy_bins, num_wall_rays, livedata, simulation=False):
# set up data
self.filepath = filepath
with h5py.File(filepath, "r") as hdf_file:
self.ls = list(hdf_file.keys())
self.num_guppys = len(self.ls)
if not livedata:
self.data = [numpy.array(hdf_file.get("{}".format(i))) for i in range(self.num_guppys)]
else:
self.data = [numpy.array(hdf_file.get("{}".format(i + 1))) for i in range(self.num_guppys)]
self.agent = agent
self.agent_data = self.data[agent]
self.length = len(self.agent_data)
self.num_bins = num_guppy_bins
self.num_rays = num_wall_rays
self.bin_angles = [agent_view_field * (i / self.num_bins) - (agent_view_field - pi) / 2 - pi / 2
for i in range(0, self.num_bins + 1)]
#self.bin_angles = [pi * (i / self.num_bins) - pi / 2 for i in range(0, self.num_bins + 1)]
self.wall_angles = [agent_view_field * (i / self.num_rays) - (agent_view_field - pi) / 2 - pi / 2
for i in range(0, self.num_rays)]
#self.wall_angles = [pi * (i / self.num_rays) - pi / 2 for i in range(0, self.num_rays)]
self.simulation = simulation
if simulation:
self.fig, self.ax = pyplot.subplots()
self.ax.set_title('tank')
set_limits(self.ax, 0, 100, 0, 100)
def drawDisjointSet(D,sinks):
fig = plt.figure()
ax = fig.add_subplot(111)
ax.set_title('Disjoint Set of BF-WSN nodes')
col = ['r','g','b','y']
D_num = np.shape(D)[0]
sinks_num = np.shape(sinks)[0]
for i in range(D_num):
nodes_num = np.shape(D[i])[0]
for j in range(nodes_num):
patch = PolygonPatch(Point(D[i][j]['centre']).buffer(D[i][j]['radius']),
fc=col[i], ec=col[i], alpha=0.5, zorder=1)
ax.add_patch(patch)
for i in range(sinks_num):
patch = PolygonPatch(Point(sinks[i]).buffer(10),fc='k', ec='k', alpha=0.2, zorder=1)
ax.add_patch(patch)
"""x1 = list(nodes[:, 0])
y1 = list(nodes[:, 1])
ax.scatter(x1, y1, s=20, color=col[i], marker='o')
#for a, b in zip(x1, y1):
# ax.text(a, b, (a, b), ha='center', va='bottom', fontsize=10)"""
set_limits(ax, 0, 50, 0, 50)
plt.savefig('Disjoint Set of BF-WSN nodes.jpg')
plt.legend()
plt.show()
def drawSingleDisjointSet(D):
fig = plt.figure()
ax1 = fig.add_subplot(131)
ax1.set_title('Disjoint Set 1')
col = ['r','g','b','y']
i = 0
nodes_num = np.shape(D[i])[0]
for j in range(nodes_num):
patch = PolygonPatch(Point(D[i][j]['centre']).buffer(D[i][j]['radius']),
fc=col[i], ec=col[i], alpha=0.5, zorder=1)
ax1.add_patch(patch)
set_limits(ax1, 0, 50, 0, 50)
ax2 = fig.add_subplot(132)
ax2.set_title('Disjoint Set 2')
col = ['r', 'g', 'b', 'y']
i = 1
nodes_num = np.shape(D[i])[0]
for j in range(nodes_num):
patch = PolygonPatch(Point(D[i][j]['centre']).buffer(D[i][j]['radius']),
fc=col[i], ec=col[i], alpha=0.5, zorder=1)
ax2.add_patch(patch)
set_limits(ax2, 0, 50, 0, 50)
ax3 = fig.add_subplot(133)
ax3.set_title('Disjoint Set 3')
col = ['r', 'g', 'b', 'y']
i = 2
nodes_num = np.shape(D[i])[0]
for j in range(nodes_num):
patch = PolygonPatch(Point(D[i][j]['centre']).buffer(D[i][j]['radius']),
fc=col[i], ec=col[i], alpha=0.5, zorder=1)
ax3.add_patch(patch)
set_limits(ax3, 0, 50, 0, 50)
plt.savefig('Disjoint Single Set of BF-WSN nodes.jpg')
plt.legend()
plt.show()
from matplotlib import pyplot from descartes.patch import PolygonPatch from figures import SIZE, BLUE, RED, set_limits invalid_poly = Polygon([(0, 0), (0, 2), (1, 1), (2, 2), (2, 0), (1, 1), (0, 0)]) valid_poly = make_valid(invalid_poly) fig = pyplot.figure(1, figsize=SIZE, dpi=90) fig.set_frameon(True) invalid_ax = fig.add_subplot(121) patch = PolygonPatch(invalid_poly, facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2) invalid_ax.add_patch(patch) set_limits(invalid_ax, -1, 3, -1, 3) valid_ax = fig.add_subplot(122) patch = PolygonPatch(valid_poly[0], facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2) valid_ax.add_patch(patch) patch = PolygonPatch(valid_poly[1], facecolor=RED, edgecolor=RED, alpha=0.5, zorder=2) valid_ax.add_patch(patch) set_limits(valid_ax, -1, 3, -1, 3) pyplot.show()
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 = pyplot.figure(1, figsize=(SIZE[0], 2 * SIZE[1]), dpi=90)
# 1
ax = fig.add_subplot(221)
plot_line(ax, line)
x, y = list(line.coords)[0]
plot_coords(ax, x, y)
offset = line.parallel_offset(0.5, 'left', join_style=1)
plot_line(ax, offset, color=BLUE)
ax.set_title('a) left, round')
set_limits(ax, ax_range[0], ax_range[1], ay_range[0], ay_range[1])
#2
ax = fig.add_subplot(222)
plot_line(ax, line)
x, y = list(line.coords)[0]
plot_coords(ax, x, y)
offset = line.parallel_offset(0.5, 'left', join_style=2)
plot_line(ax, offset, color=BLUE)
ax.set_title('b) left, mitred')
set_limits(ax, ax_range[0], ax_range[1], ay_range[0], ay_range[1])
#3
# If one need to rotate it clockwise along an upward pointing x axis:
elrv = shapely.affinity.rotate(ell, 90 - ellipse[2])
# According to the man, a positive value means a anti-clockwise angle,
# and a negative one a clockwise angle.
ellipse2 = ((-4, -4), (7, 4), 140)
circ2 = shapely.geometry.Point(ellipse2[0]).buffer(1)
ell2 = shapely.affinity.scale(circ2, int(ellipse2[1][0]), int(ellipse2[1][1]))
ellr2 = shapely.affinity.rotate(ell2, ellipse2[2])
elrv2 = shapely.affinity.rotate(ell2, 90 - ellipse2[2])
inter = elrv.intersection(elrv2)
fig = pyplot.figure()
fig2 = pyplot.figure()
ax = fig.add_subplot(111)
ax2 = fig2.add_subplot(111)
patch = PolygonPatch(elrv, fc=GREEN, ec=GRAY, alpha=0.5, zorder=2)
patch2 = PolygonPatch(elrv2, fc=GREEN, ec=GRAY, alpha=0.5, zorder=2)
ax.add_patch(patch)
ax.add_patch(patch2)
interPatch = PolygonPatch(inter, fc=GREEN, ec=GRAY, alpha=0.5, zorder=2)
ax2.add_patch(interPatch)
set_limits(ax, -10, 10, -10, 10)
set_limits(ax2, -10, 10, -10, 10)
fig.savefig('elipses.png')
fig2.savefig('intersection.png')
from figures import SIZE, BLUE, GRAY, set_limits
polygons = [Point(i, 0).buffer(0.7) for i in range(5)]
fig = pyplot.figure(1, figsize=SIZE, dpi=90)
# 1
ax = fig.add_subplot(121)
for ob in polygons:
p = PolygonPatch(ob, fc=GRAY, ec=GRAY, alpha=0.5, zorder=1)
ax.add_patch(p)
ax.set_title('a) 多边形', fontproperties=font_song)
set_limits(ax, -2, 6, -2, 2)
# 2
ax = fig.add_subplot(122)
u = cascaded_union(polygons)
patch2b = PolygonPatch(u, fc=GRAY, ec=GRAY, alpha=0.5, zorder=2)
ax.add_patch(patch2b)
ax.set_title('b) 合并结果', fontproperties=font_song)
set_limits(ax, -2, 6, -2, 2)
# pyplot.show()
import os
plot_line(ax, line, color=color, alpha=0.7, zorder=2)
fig = pyplot.figure(1, figsize=SIZE, dpi=90)
# 1: disconnected multilinestring
ax = fig.add_subplot(121)
mline1 = MultiLineString([((0, 0), (1, 1)), ((0, 2), (1, 1.5), (1.5, 1), (2, 0))])
plot_coords(ax, mline1)
plot_bounds(ax, mline1)
plot_lines(ax, mline1)
ax.set_title('a) simple')
set_limits(ax, -1, 3, -1, 3)
#2: invalid self-touching ring
ax = fig.add_subplot(122)
mline2 = MultiLineString([((0, 0), (1, 1), (1.5, 1)), ((0, 2), (1, 1.5), (1.5, 1), (2, 0))])
plot_coords(ax, mline2)
plot_bounds(ax, mline2)
plot_lines(ax, mline2)
ax.set_title('b) complex')
set_limits(ax, -1, 3, -1, 3)
pyplot.show()
fig = pyplot.figure(1, figsize=SIZE, dpi=90)
fig.set_frameon(True)
# 1
ax = fig.add_subplot(121)
points2 = MultiPoint([(0, 0), (2, 2)])
for p in points2:
ax.plot(p.x, p.y, 'o', color=GRAY)
hull2 = points2.convex_hull
plot_line(ax, hull2, color=BLUE, alpha=0.5, zorder=2)
ax.set_title('a) N = 2')
set_limits(ax, -1, 4, -1, 3)
#2
ax = fig.add_subplot(122)
points1 = MultiPoint([(0, 0), (1, 1), (0, 2), (2, 2), (3, 1), (1, 0)])
for p in points1:
ax.plot(p.x, p.y, 'o', color=GRAY)
hull1 = points1.convex_hull
patch1 = PolygonPatch(hull1, facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patch1)
ax.set_title('b) N > 2')
set_limits(ax, -1, 4, -1, 3)
from figures import SIZE, BLUE, GRAY, set_limits, plot_line, add_origin
fig = pyplot.figure(1, figsize=SIZE, dpi=90)
line = LineString([(1, 3), (1, 1), (4, 1)])
# 1
ax = fig.add_subplot(121)
plot_line(ax, line, GRAY)
plot_line(ax, affinity.rotate(line, 90, 'center'), BLUE)
add_origin(ax, line, 'center')
ax.set_title(u"90\N{DEGREE SIGN}, default origin (center)")
set_limits(ax, 0, 5, 0, 4)
# 2
ax = fig.add_subplot(122)
plot_line(ax, line, GRAY)
plot_line(ax, affinity.rotate(line, 90, 'centroid'), BLUE)
add_origin(ax, line, 'centroid')
ax.set_title(u"90\N{DEGREE SIGN}, origin='centroid'")
set_limits(ax, 0, 5, 0, 4)
pyplot.show()
fig = plt.figure(1, figsize=SIZE, dpi=90)
fig.set_frameon(True)
# 1
ax = fig.add_subplot(121)
mp = MultiPoint([(0, 0), (0.5, 1.5), (1, 0.5), (0.5, 0.5)])
rect = mp.minimum_rotated_rectangle
for p in mp:
ax.plot(p.x, p.y, 'o', color=GRAY)
patch = PolygonPatch(rect, facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patch)
ax.set_title('a) MultiPoint')
set_limits(ax, -1, 2, -1, 2)
# 2
ax = fig.add_subplot(122)
ls = LineString([(-0.5, 1.2), (0.5, 0), (1, 1), (1.5, 0), (1.5, 0.5)])
rect = ls.minimum_rotated_rectangle
ax.plot(*ls.xy, color=DARKGRAY, linewidth=3, alpha=0.5, zorder=2)
patch = PolygonPatch(rect, facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patch)
set_limits(ax, -1, 2, -1, 2)
ax.set_title('b) LineString')
plt.show()
fig = plt.figure(1, figsize=SIZE, dpi=90)
fig.set_frameon(True)
# 1
ax = fig.add_subplot(121)
mp = MultiPoint([(0, 0), (0.5, 1.5), (1, 0.5), (0.5, 0.5)])
rect = mp.minimum_rotated_rectangle
for p in mp:
ax.plot(p.x, p.y, 'o', color=GRAY)
patch = PolygonPatch(rect, facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patch)
ax.set_title('a) MultiPoint')
set_limits(ax, -1, 2, -1, 2)
# 2
ax = fig.add_subplot(122)
ls = LineString([(-0.5, 1.2), (0.5, 0), (1, 1), (1.5, 0), (1.5, 0.5)])
rect = ls.minimum_rotated_rectangle
ax.plot(*ls.xy, color=DARKGRAY, linewidth=3, alpha=0.5, zorder=2)
patch = PolygonPatch(rect, facecolor=BLUE, edgecolor=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patch)
set_limits(ax, -1, 2, -1, 2)
ax.set_title('b) LineString')
plt.show()
def gen_macros_for_fence_region(macro_pos_x,
macro_pos_y,
macro_size_x,
macro_size_y,
regions,
xl,
xh,
yl,
yh,
merge=False,
plot=False):
# tt = time.time()
macros = MultiPolygon([
box(
macro_pos_x[i],
macro_pos_y[i],
macro_pos_x[i] + macro_size_x[i],
macro_pos_y[i] + macro_size_y[i],
) for i in range(macro_size_x.size(0))
])
# print("macro:", time.time()-tt)
# tt = time.time()
num_boxes = regions.size(0)
regions = regions.view(num_boxes, 2, 2)
fence_regions = MultiPolygon([
box(regions[i, 0, 0], regions[i, 0, 1], regions[i, 1, 0],
regions[i, 1, 1]) for i in range(num_boxes)
])
site = box(xl, yl, xh, yh)
reverse = site.difference(fence_regions).union(macros)
# print("fence region:", time.time()-tt)
# tt = time.time()
slices = []
xs = torch.cat(
[regions[:, :, 0].view(-1), macro_pos_x, macro_pos_x + macro_size_x],
dim=0).sort()[0]
for i in range(xs.size(0) + 1):
x_l = xl if i == 0 else xs[i - 1]
x_h = xh if i == xs.size(0) else xs[i]
cvx_hull = box(x_l, yl, x_h, yh)
intersect = reverse.intersection(cvx_hull)
if isinstance(intersect, Polygon):
slices.append(intersect.bounds)
elif isinstance(intersect, (GeometryCollection, MultiPolygon)):
slices.extend(
[j.bounds for j in intersect if (isinstance(j, Polygon))])
# print("slicing:", time.time()-tt)
# tt = time.time()
if merge:
raw_bbox_list = sorted(slices, key=lambda x: (x[1], x[0]))
cur_bbox = None
bbox_list = []
for i, p in enumerate(raw_bbox_list):
minx, miny, maxx, maxy = p
if cur_bbox is None:
cur_bbox = [minx, miny, maxx, maxy]
elif cur_bbox[1] == miny and cur_bbox[3] == maxy:
cur_bbox[2:] = p[2:]
else:
bbox_list.append(cur_bbox)
cur_bbox = [minx, miny, maxx, maxy]
else:
bbox_list.append(cur_bbox)
else:
bbox_list = slices
# print("merge:", time.time()-tt)
bbox_list = torch.tensor(bbox_list).float()
pos_x = bbox_list[:, 0]
pos_y = bbox_list[:, 1]
node_size_x = bbox_list[:, 2] - bbox_list[:, 0]
node_size_y = bbox_list[:, 3] - bbox_list[:, 1]
if plot:
from descartes.patch import PolygonPatch
from matplotlib import pyplot as plt
from figures import BLUE, SIZE, color_isvalid, plot_coords, set_limits
res = []
for bbox in bbox_list:
res.append(box(*bbox))
res = MultiPolygon(res)
fig = plt.figure(1, figsize=SIZE, dpi=90)
ax = fig.add_subplot(121)
for polygon in res:
# plot_coords(ax, polygon.exterior)
patch = PolygonPatch(
polygon,
facecolor=color_isvalid(fence_regions),
edgecolor=color_isvalid(fence_regions, valid=BLUE),
alpha=0.5,
zorder=2,
)
ax.add_patch(patch)
set_limits(ax, -1, 20, -1, 20)
ax = fig.add_subplot(122)
patch = PolygonPatch(
reverse,
facecolor=color_isvalid(reverse),
edgecolor=color_isvalid(reverse, valid=BLUE),
alpha=0.5,
zorder=2,
)
ax.add_patch(patch)
set_limits(ax, -1, 20, -1, 20)
plt.savefig("polygon.png")
return pos_x, pos_y, node_size_x, node_size_y
def slice_non_fence_region(
regions,
xl,
yl,
xh,
yh,
macro_pos_x=None,
macro_pos_y=None,
macro_size_x=None,
macro_size_y=None,
merge=False,
plot=False,
figname="non_fence_region.png",
device=torch.device("cuda:0"),
):
if type(regions) == list:
if isinstance(regions[0], np.ndarray):
regions = torch.from_numpy(np.concatenate(regions, 0)).to(device)
elif isinstance(regions[0], torch.Tensor):
regions = torch.cat(regions, dim=0).to(device) # [n_box, 4]
elif isinstance(regions, np.ndarray):
regions = torch.from_numpy(regions).to(device)
if macro_pos_x is not None:
if isinstance(macro_pos_x, np.ndarray):
macro_pos_x = torch.from_numpy(macro_pos_x).to(device).float()
macro_pos_y = torch.from_numpy(macro_pos_y).to(device).float()
macro_size_x = torch.from_numpy(macro_size_x).to(device).float()
macro_size_y = torch.from_numpy(macro_size_y).to(device).float()
regions = torch.cat(
[
regions,
torch.stack([
macro_pos_x, macro_pos_y, macro_pos_x + macro_size_x,
macro_pos_y + macro_size_y
], 0).t(),
],
0,
)
num_boxes = regions.size(0)
regions = regions.view(num_boxes, 2, 2)
fence_regions = MultiPolygon([
box(regions[i, 0, 0], regions[i, 0, 1], regions[i, 1, 0],
regions[i, 1, 1]) for i in range(num_boxes)
])
fence_regions = unary_union(fence_regions)
site = box(xl, yl, xh, yh)
non_fence_region = unary_union(site.difference(fence_regions))
slices = []
xs = regions[:, :, 0].view(-1).sort()[0]
for i in range(xs.size(0) + 1):
x_l = xl if i == 0 else xs[i - 1]
x_h = xh if i == xs.size(0) else xs[i]
cvx_hull = box(x_l, yl, x_h, yh)
if x_l >= x_h or not cvx_hull.is_valid:
continue
intersect = non_fence_region.intersection(cvx_hull)
if isinstance(intersect, Polygon) and len(intersect.bounds) == 4:
slices.append(intersect.bounds)
elif isinstance(intersect, (GeometryCollection, MultiPolygon)):
slices.extend([
j.bounds for j in intersect
if (isinstance(j, Polygon) and len(j.bounds) == 4)
])
if merge:
raw_bbox_list = sorted(slices, key=lambda x: (x[1], x[0]))
cur_bbox = None
bbox_list = []
for i, p in enumerate(raw_bbox_list):
minx, miny, maxx, maxy = p
if cur_bbox is None:
cur_bbox = [minx, miny, maxx, maxy]
elif cur_bbox[1] == miny and cur_bbox[3] == maxy and cur_bbox[
2] == minx:
cur_bbox[2:] = p[2:]
else:
bbox_list.append(cur_bbox)
cur_bbox = [minx, miny, maxx, maxy]
else:
bbox_list.append(cur_bbox)
else:
bbox_list = slices
if plot:
from descartes.patch import PolygonPatch
from matplotlib import pyplot as plt
# from figures import BLUE, SIZE, set_limits, plot_coords, color_isvalid
res = []
bbox_list_np = np.array(bbox_list)
bbox_list_np *= 1000 / np.max(bbox_list_np)
for bbox in bbox_list_np:
res.append(box(*bbox.tolist()))
res = MultiPolygon(res)
fig = plt.figure(1, figsize=SIZE, dpi=90)
ax = fig.add_subplot(121)
for polygon in res:
# plot_coords(ax, polygon.exterior)
patch = PolygonPatch(
polygon,
facecolor=color_isvalid(non_fence_region),
edgecolor=color_isvalid(non_fence_region, valid=BLUE),
alpha=0.5,
zorder=2,
)
ax.add_patch(patch)
set_limits(ax, -1, 1000, -1, 1000, dx=100, dy=100)
# ax = fig.add_subplot(122)
# patch = PolygonPatch(non_fence_region, facecolor=color_isvalid(
# non_fence_region), edgecolor=color_isvalid(non_fence_region, valid=BLUE), alpha=0.5, zorder=2)
# ax.add_patch(patch)
# set_limits(ax, -1, 1000, -1, 1000, dx=100, dy=100)
plt.savefig(figname)
plt.close()
bbox_list = torch.tensor(bbox_list, device=device)
# print("non fence region area after slicing:", ((bbox_list[:,2]-bbox_list[:,0])*(bbox_list[:,3]-bbox_list[:,1])).sum().item())
return bbox_list
from figures import SIZE, BLUE, GRAY, set_limits
polygons = [Point(i, 0).buffer(0.7) for i in range(5)]
fig = pyplot.figure(1, figsize=SIZE, dpi=90)
# 1
ax = fig.add_subplot(121)
for ob in polygons:
p = PolygonPatch(ob, fc=GRAY, ec=GRAY, alpha=0.5, zorder=1)
ax.add_patch(p)
ax.set_title('a) polygons')
set_limits(ax, -2, 6, -2, 2)
#2
ax = fig.add_subplot(122)
u = cascaded_union(polygons)
patch2b = PolygonPatch(u, fc=BLUE, ec=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patch2b)
ax.set_title('b) union')
set_limits(ax, -2, 6, -2, 2)
pyplot.show()
b = Point(2, 1).buffer(1.5)
# 1
ax = fig.add_subplot(121)
patch1 = PolygonPatch(a, fc=GRAY, ec=GRAY, alpha=0.2, zorder=1)
ax.add_patch(patch1)
patch2 = PolygonPatch(b, fc=GRAY, ec=GRAY, alpha=0.2, zorder=1)
ax.add_patch(patch2)
c = a.union(b)
patchc = PolygonPatch(c, fc=BLUE, ec=BLUE, alpha=0.5, zorder=2)
ax.add_patch(patchc)
ax.set_title('a.union(b)')
set_limits(ax, -1, 4, -1, 3)
def plot_line(ax, ob, color=GRAY):
x, y = ob.xy
ax.plot(x, y, color, linewidth=3, solid_capstyle='round', zorder=1)
#2
ax = fig.add_subplot(122)
plot_line(ax, a.exterior)
plot_line(ax, b.exterior)
u = a.exterior.union(b.exterior)
if u.geom_type in ['LineString', 'LinearRing', 'Point']:
plot_line(ax, u, color=BLUE)
elif u.geom_type is 'MultiLineString':
from descartes.patch import PolygonPatch
from matplotlib import pyplot
def point_in_area(point, triangles):
for triangle in triangles:
if point.within(triangle):
return True
return False
if __name__ == '__main__':
# Create plot
fig = pyplot.figure(1, figsize=SIZE, dpi=90)
ax = fig.add_subplot(121)
set_limits(ax, 0, 5, 0, 5)
# Create polygon
array = [[1, 2], [5, 3], [3, 3], [3, 4]]
polygon = Polygon(array)
points = MultiPoint([(1, 2), (5, 3), (3, 3), (3, 4), (1, 4)])
triangles = triangulate(points)
# Display triangles
for triangle in triangles:
patch = PolygonPatch(triangle, alpha=0.5, zorder=2)
ax.add_patch(patch)
# Display polygon
# patch = PolygonPatch(polygon, alpha=0.5, zorder=2)
patch1a = PolygonPatch(R, facecolor=GRAY, edgecolor=GRAY, alpha=0.5, zorder=1)
skewR = affinity.skew(R, xs=20, origin=(1, 1))
patch1b = PolygonPatch(skewR,
facecolor=BLUE,
edgecolor=BLUE,
alpha=0.5,
zorder=2)
ax.add_patch(patch1a)
ax.add_patch(patch1b)
add_origin(ax, R, (1, 1))
ax.set_title("a) xs=20, origin(1, 1)")
set_limits(ax, 0, 5, 0, 4)
# 2
ax = fig.add_subplot(122)
patch2a = PolygonPatch(R, facecolor=GRAY, edgecolor=GRAY, alpha=0.5, zorder=1)
skewR = affinity.skew(R, ys=30)
patch2b = PolygonPatch(skewR,
facecolor=BLUE,
edgecolor=BLUE,
alpha=0.5,
zorder=2)
ax.add_patch(patch2a)
ax.add_patch(patch2b)
add_origin(ax, R, 'center')
# ax.plot(x, y, color=GREEN, alpha=0.5, linewidth=3, solid_capstyle='round', zorder=2)
for x in lines:
b = LineString(x)
x, y = b.xy
ax.plot(x,
y,
color=GRAY,
alpha=0.5,
linewidth=3,
solid_capstyle='round',
zorder=2)
ax.set_title('a) 原始的5条线', fontproperties=font_song)
set_limits(ax, -1, 3, -1, 3)
# 1: disconnected multilinestring
ax = fig.add_subplot(132)
# plot_coords(ax, a)
# plot_coords(ax, the_line)
# x, y = a.xy
# ax.plot(x, y, color=YELLOW, alpha=0.5, linewidth=3, solid_capstyle='round', zorder=2)
for the_l in the_line:
x, y = the_l.xy
ax.plot(x,
y,
color=GRAY,
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 = pyplot.figure(1, figsize=(SIZE[0], 2 * SIZE[1]), dpi=90)
# 1
ax = fig.add_subplot(221)
plot_line(ax, line)
x, y = list(line.coords)[0]
plot_coords(ax, x, y)
offset = line.parallel_offset(0.5, 'left', join_style=1)
plot_line(ax, offset, color=BLUE)
ax.set_title('a) left, round')
set_limits(ax, ax_range[0], ax_range[1], ay_range[0], ay_range[1])
#2
ax = fig.add_subplot(222)
plot_line(ax, line)
x, y = list(line.coords)[0]
plot_coords(ax, x, y)
offset = line.parallel_offset(0.5, 'left', join_style=2)
plot_line(ax, offset, color=BLUE)
ax.set_title('b) left, mitred')
set_limits(ax, ax_range[0], ax_range[1], ay_range[0], ay_range[1])
#3
