38 lines
1 KiB
Python
38 lines
1 KiB
Python
from mower.utils import typealias as tp
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def va(a: tp.Coordinate, b: tp.Coordinate) -> tp.Coordinate:
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"""向量加法，vector add"""
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return [a[0] + b[0], a[1] + b[1]]
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def vs(a: tp.Coordinate, b: tp.Coordinate) -> tp.Coordinate:
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"""向量减法，vector subtract"""
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return [a[0] - b[0], a[1] - b[1]]
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def sa(scope: tp.Scope, vector: tp.Coordinate) -> tp.Scope:
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"""区域偏移，scope add"""
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return [va(scope[0], vector), va(scope[1], vector)]
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def sm(a: float, v: tp.Coordinate) -> tp.Coordinate:
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"""数乘向量，scalar multiply"""
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return round(a * v[0]), round(a * v[1])
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def ss(x_rate: float, y_rate: float, scope: tp.Scope) -> tp.Scope:
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"""区域放缩，scope scaling"""
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return (
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int(scope[0][0] * x_rate),
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int(scope[0][1] * y_rate),
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), (
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int(scope[1][0] * x_rate),
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int(scope[1][1] * y_rate),
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)
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def in_scope(scope: tp.Scope, vector: tp.Coordinate) -> bool:
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"""在区域内"""
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x, y = vector
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return scope[0][0] < x < scope[1][0] and scope[0][1] < y < scope[1][1]
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