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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
class Lane:
"""
Road lane specification.
"""
width: float # Width in meters
class RoadPart:
"""
Line part of the road.
@ -24,7 +32,7 @@ class RoadPart:
point_2: np.array,
left_offset: float,
right_offset: float,
lanes: List[float],
lanes: List[Lane],
):
"""
:param point_1: start point of the road part
@ -37,7 +45,7 @@ class RoadPart:
self.point_2: np.array = point_2
self.left_offset: float = left_offset
self.right_offset: float = right_offset
self.lanes: List[float] = lanes
self.lanes: List[Lane] = lanes
self.turned: np.array = norm(
turn_by_angle(self.point_2 - self.point_1, np.pi / 2)
@ -58,7 +66,7 @@ class RoadPart:
flinger: Flinger,
left_offset: float,
right_offset: float,
lanes: List[float],
lanes: List[Lane],
) -> "RoadPart":
"""
Construct road part from OSM nodes.
@ -71,7 +79,7 @@ class RoadPart:
lanes,
)
def update(self):
def update(self) -> None:
"""
Compute additional points.
"""
@ -163,7 +171,7 @@ class RoadPart:
Draw lane delimiters.
"""
for lane in self.lanes:
a = self.right_vector - self.turned * lane
a = self.right_vector - self.turned * lane.width
path = drawing.path(
["M", self.point_2 + a, "L", self.point_1 + a],
fill="none",