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Issue #83: add preliminary support for placement.

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This commit is contained in:
Sergey Vartanov 2021-11-08 00:18:31 +03:00
parent edfdd386cf
commit 3b83cf15e6
2 changed files with 113 additions and 49 deletions
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19
map_machine/geometry/vector.py
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@ -51,14 +51,19 @@ class Polyline:
def get_path(self, parallel_offset: float = 0) -> str:
"""Construct SVG path commands."""
points: list[np.ndarray]
try:
points = (
LineString(self.points).parallel_offset(parallel_offset).coords
if parallel_offset
else self.points
)
except ValueError:
if np.allclose(parallel_offset, 0):
points = self.points
else:
try:
points = (
LineString(self.points)
.parallel_offset(parallel_offset)
.coords
if parallel_offset
else self.points
)
except ValueError:
points = self.points
path: str = "M " + " L ".join(f"{x[0]},{x[1]}" for x in points)
return path + (" Z" if np.allclose(points[0], points[-1]) else "")