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195 lines
2.8 KiB
Markdown
195 lines
2.8 KiB
Markdown
---
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title: mbcp.mp\nmath.utils
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order: 1
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icon: laptop-code
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category: API
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---
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### ***def*** `clamp(x: float, min_: float, max_: float) -> float`
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区间截断函数。
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Args:
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x:
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min_:
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max_:
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Returns:
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限制后的值
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<details>
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<summary>源代码</summary>
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```python
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def clamp(x: float, min_: float, max_: float) -> float:
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"""
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区间截断函数。
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Args:
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x:
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min_:
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max_:
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Returns:
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限制后的值
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"""
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return max(min(x, max_), min_)
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```
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</details>
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### ***def*** `approx(x: float, y: float, epsilon: float) -> bool`
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判断两个数是否近似相等。或包装一个实数,用于判断是否近似于0。
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Args:
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x:
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y:
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epsilon:
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Returns:
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是否近似相等
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<details>
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<summary>源代码</summary>
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```python
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def approx(x: float, y: float=0.0, epsilon: float=APPROX) -> bool:
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"""
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判断两个数是否近似相等。或包装一个实数,用于判断是否近似于0。
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Args:
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x:
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y:
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epsilon:
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Returns:
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是否近似相等
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"""
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return abs(x - y) < epsilon
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```
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</details>
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### ***def*** `sign(x: float, only_neg: bool) -> str`
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获取数的符号。
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Args:
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x: 数
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only_neg: 是否只返回负数的符号
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Returns:
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符号 + - ""
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<details>
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<summary>源代码</summary>
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```python
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def sign(x: float, only_neg: bool=False) -> str:
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"""获取数的符号。
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Args:
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x: 数
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only_neg: 是否只返回负数的符号
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Returns:
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符号 + - ""
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"""
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if x > 0:
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return '+' if not only_neg else ''
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elif x < 0:
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return '-'
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else:
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return ''
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```
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</details>
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### ***def*** `sign_format(x: float, only_neg: bool) -> str`
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格式化符号数
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-1 -> -1
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1 -> +1
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0 -> ""
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Args:
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x: 数
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only_neg: 是否只返回负数的符号
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Returns:
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符号 + - ""
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<details>
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<summary>源代码</summary>
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```python
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def sign_format(x: float, only_neg: bool=False) -> str:
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"""格式化符号数
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-1 -> -1
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1 -> +1
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0 -> ""
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Args:
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x: 数
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only_neg: 是否只返回负数的符号
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Returns:
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符号 + - ""
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"""
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if x > 0:
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return f'+{x}' if not only_neg else f'{x}'
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elif x < 0:
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return f'-{abs(x)}'
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else:
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return ''
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```
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</details>
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### ***class*** `Approx`
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用于近似比较对象
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已实现对象 实数 Vector3 Point3 Plane3 Line3
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###   ***def*** `__init__(self, value: RealNumber) -> None`
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<details>
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<summary>源代码</summary>
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```python
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def __init__(self, value: RealNumber):
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self.value = value
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```
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</details>
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###   ***def*** `raise_type_error(self, other: Any) -> None`
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<details>
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<summary>源代码</summary>
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```python
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def raise_type_error(self, other):
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raise TypeError(f'Unsupported type: {type(self.value)} and {type(other)}')
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```
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</details>
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