def offset_default(polygon_stack, val):
path = polygon_stack.polygons
po = pyclipper.PyclipperOffset()
po.AddPaths(path, pyclipper.JT_SQUARE, pyclipper.ET_CLOSEDPOLYGON)
offseted = po.Execute(scale_value_to_clipper(val))
return offseted
def single_polygon_offset(single_line, val):
path = single_line
# path = pyclipper.ReversePaths(polygon_stack.polygons)
# for polygon_index in range(len(path)):
# if not pyclipper.Orientation(path[polygon_index]):
# path[polygon_index] = pyclipper.ReversePath(path[polygon_index])
po = pyclipper.PyclipperOffset()
po.AddPath(path, pyclipper.JT_SQUARE, pyclipper.ET_CLOSEDPOLYGON)
offseted = po.Execute(scale_value_to_clipper(float(val)))
return offseted
def offset(polygon_stack, val):
path = polygon_stack.polygons
# path = pyclipper.ReversePaths(polygon_stack.polygons)
# for polygon_index in range(len(path)):
# if not pyclipper.Orientation(path[polygon_index]):
# path[polygon_index] = pyclipper.ReversePath(path[polygon_index])
po = pyclipper.PyclipperOffset()
po.AddPaths(path, pyclipper.JT_MITER, pyclipper.ET_CLOSEDPOLYGON)
offseted = po.Execute(scale_value_to_clipper(val))
return offseted
def lines_offset(lines, offset_value, does_visualize=False):
pc = pyclipper.PyclipperOffset()
pc.AddPaths(lines, pyclipper.JT_SQUARE, pyclipper.ET_OPENSQUARE)
solution = pc.Execute(scale_value_to_clipper(offset_value))
# solution = pyclipper.scale_from_clipper(solution)
if does_visualize:
import matplotlib.pyplot as plt
for line in lines:
plt.plot([i[0] for i in line], [i[1] for i in line])
for line in solution:
plt.plot([i[0] for i in line], [i[1] for i in line])
plt.plot([line[-1][0], line[0][0]], [line[-1][1], line[0][1]])
plt.show()
return solution
def detect_islands(self):
po = pyclipper.PyclipperOffset()
po.MiterLimit = 2
base = 1#pow(10, 15)
empty_poly = PolygonStack([[[base, base],
[base + 1, base],
[base + 1, base + 1],
[base, base + 1]]])
polys = pyclipper.PolyTreeToPaths(
diff_layers_as_polytree(self.layers[self.index],
empty_poly.polygons,
True))
po.AddPaths(polys, pyclipper.JT_MITER, pyclipper.ET_CLOSEDPOLYGON)
islandStack = IslandStack(
po.Execute2(scale_value_to_clipper(-config.LINE_WIDTH/2)))
return islandStack.get_islands()