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Add sample_to_graph() to make code easier to read

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XANTRONIX 2025-03-02 13:46:50 -05:00
parent d83e52acb7
commit 72d8195943
1 changed files with 11 additions and 3 deletions
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14
lib/xmet/hodograph.py
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@ -29,12 +29,20 @@ class Hodograph():
self.height = min(width, height)
self.radius = min(width, height) * self.zoom
def sample_to_graph(self, wind_speed: dir, wind_dir: float) -> tuple:
r = self.radius * (wind_speed / WIND_SPEED_MAX)
x = r * math.cos(radians(wind_dir))
y = r * math.sin(radians(wind_dir))
return x, y
def sample_to_screen(self, wind_speed: dir, wind_dir: float) -> tuple:
r = self.radius * min(wind_speed, WIND_SPEED_MAX) / WIND_SPEED_MAX
gx, gy = self.sample_to_graph(wind_speed, wind_dir)
return (
self.offset_x * self.width + r * math.cos(radians(wind_dir)),
self.offset_y * self.height + r * math.sin(radians(wind_dir))
self.offset_x * self.width + gx,
self.offset_y * self.height + gy
)
def draw_speed_lines(self, cr: cairo.Context, x, y):