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Issue #45: add simple lane specification.

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This commit is contained in:
Sergey Vartanov 2021-06-01 01:26:23 +03:00
parent e6af8f44df
commit 48c91081b3
1 changed files with 13 additions and 5 deletions
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18
roentgen/road.py
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@ -13,6 +13,14 @@ from roentgen.osm_reader import OSMNode
@dataclass @dataclass
class Lane:
"""
Road lane specification.
"""
width: float # Width in meters
class RoadPart: class RoadPart:
""" """
Line part of the road. Line part of the road.
@ -24,7 +32,7 @@ class RoadPart:
point_2: np.array, point_2: np.array,
left_offset: float, left_offset: float,
right_offset: float, right_offset: float,
lanes: List[float], lanes: List[Lane],
): ):
""" """
:param point_1: start point of the road part :param point_1: start point of the road part
@ -37,7 +45,7 @@ class RoadPart:
self.point_2: np.array = point_2 self.point_2: np.array = point_2
self.left_offset: float = left_offset self.left_offset: float = left_offset
self.right_offset: float = right_offset self.right_offset: float = right_offset
self.lanes: List[float] = lanes self.lanes: List[Lane] = lanes
self.turned: np.array = norm( self.turned: np.array = norm(
turn_by_angle(self.point_2 - self.point_1, np.pi / 2) turn_by_angle(self.point_2 - self.point_1, np.pi / 2)
@ -58,7 +66,7 @@ class RoadPart:
flinger: Flinger, flinger: Flinger,
left_offset: float, left_offset: float,
right_offset: float, right_offset: float,
lanes: List[float], lanes: List[Lane],
) -> "RoadPart": ) -> "RoadPart":
""" """
Construct road part from OSM nodes. Construct road part from OSM nodes.
@ -71,7 +79,7 @@ class RoadPart:
lanes, lanes,
) )
def update(self): def update(self) -> None:
""" """
Compute additional points. Compute additional points.
""" """
@ -163,7 +171,7 @@ class RoadPart:
Draw lane delimiters. Draw lane delimiters.
""" """
for lane in self.lanes: for lane in self.lanes:
a = self.right_vector - self.turned * lane a = self.right_vector - self.turned * lane.width
path = drawing.path( path = drawing.path(
["M", self.point_2 + a, "L", self.point_1 + a], ["M", self.point_2 + a, "L", self.point_1 + a],
fill="none", fill="none",