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Issue #23: fix building height and shade.

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This commit is contained in:
Sergey Vartanov 2020-09-23 02:36:30 +03:00
parent 2fccc9cf67
commit 2ffac6f98b
3 changed files with 20 additions and 12 deletions
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10
roentgen/flinger.py
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@ -3,6 +3,8 @@ Author: Sergey Vartanov (me@enzet.ru)
Geo projection.
"""
from typing import Optional
import numpy as np
from roentgen.util import MinMax
@ -66,11 +68,15 @@ class Flinger:
return result
def get_scale(self, coordinates: np.array) -> float:
def get_scale(self, coordinates: Optional[np.array] = None) -> float:
"""
Return pixels per meter ratio for the given geo coordinates.
:param coordinates: geo coordinates
"""
scale_factor = 1 / np.cos(coordinates[0] / 180 * np.pi)
if coordinates is None:
# Get pixels per meter ratio for the center of the boundary box.
coordinates = self.geo_boundaries.center()
scale_factor: float = 1 / np.cos(coordinates[0] / 180 * np.pi)
return self.pixels_per_meter * scale_factor