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add get_bounds_nonempty

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This commit is contained in:
jan 2022-02-27 21:21:34 -08:00
commit 0471addd65
3 changed files with 24 additions and 1 deletions
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12
masque/traits/positionable.py
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@ -65,9 +65,21 @@ class Positionable(metaclass=ABCMeta):
def get_bounds(self) -> Optional[NDArray[numpy.float64]]:
"""
Returns `[[x_min, y_min], [x_max, y_max]]` which specify a minimal bounding box for the entity.
Returns `None` for an empty entity.
"""
pass
def get_bounds_nonempty(self) -> NDArray[numpy.float64]:
"""
Returns `[[x_min, y_min], [x_max, y_max]]` which specify a minimal bounding box for the entity.
Asserts that the entity is non-empty (i.e., `get_bounds()` does not return None).
This is handy for destructuring like `xy_min, xy_max = entity.get_bounds_nonempty()`
"""
bounds = self.get_bounds()
assert(bounds is not None)
return bounds
class PositionableImpl(Positionable, metaclass=ABCMeta):
"""