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46 lines
1.1 KiB
Python
46 lines
1.1 KiB
Python
from typing import overload
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class Vector:
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def __init__(self, x: float, y: float, z: float):
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"""
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向量
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Args:
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x: x轴分量
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y: y轴分量
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z: z轴分量
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"""
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self.x = x
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self.y = y
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self.z = z
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@overload
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def __mul__(self, other: float) -> 'Vector':
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...
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@overload
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def __mul__(self, other: 'Vector') -> float:
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...
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def __mul__(self, other):
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"""
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点乘和数乘
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Args:
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other:
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Returns:
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"""
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if isinstance(other, (float, int)):
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return Vector(self.x * other, self.y * other, self.z * other)
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elif isinstance(other, Vector):
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return self.x * other.x + self.y * other.y + self.z * other.z
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else:
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raise TypeError(f"unsupported operand type(s) for *: 'Vector' and '{type(other)}'")
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def __rmul__(self, other: float) -> 'Vector':
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return self.__mul__(other)
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v: Vector = Vector(1, 2, 3) * 3.0
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v2: Vector = 3.0 * Vector(1, 2, 3)
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print(v, v2) |