2024-08-28 10:52:17 +08:00
|
|
|
|
---
|
2024-08-28 12:02:30 +08:00
|
|
|
|
title: mbcp.mp_math.utils
|
2024-08-28 10:52:17 +08:00
|
|
|
|
---
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *func* `clamp() -> float`
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**说明**: 区间限定函数
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**参数**:
|
|
|
|
|
> - x: 待限定的值
|
|
|
|
|
> - min_: 最小值
|
|
|
|
|
> - max_: 最大值
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 15:05:02 +08:00
|
|
|
|
**返回**: 限制后的值
|
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def clamp(x: float, min_: float, max_: float) -> float:
|
|
|
|
|
"""
|
2024-08-28 22:07:43 +08:00
|
|
|
|
区间限定函数
|
2024-08-28 10:52:17 +08:00
|
|
|
|
Args:
|
2024-08-28 22:07:43 +08:00
|
|
|
|
x: 待限定的值
|
|
|
|
|
min_: 最小值
|
|
|
|
|
max_: 最大值
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
Returns:
|
|
|
|
|
限制后的值
|
|
|
|
|
"""
|
|
|
|
|
return max(min(x, max_), min_)
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *func* `approx(x: float = 0.0, y: float = APPROX) -> bool`
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**说明**: 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。
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**参数**:
|
|
|
|
|
> - x: 数1
|
|
|
|
|
> - y: 数2
|
|
|
|
|
> - epsilon: 误差
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 15:05:02 +08:00
|
|
|
|
**返回**: 是否近似相等
|
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def approx(x: float, y: float=0.0, epsilon: float=APPROX) -> bool:
|
|
|
|
|
"""
|
|
|
|
|
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。
|
|
|
|
|
Args:
|
2024-08-28 22:07:43 +08:00
|
|
|
|
x: 数1
|
|
|
|
|
y: 数2
|
|
|
|
|
epsilon: 误差
|
2024-08-28 10:52:17 +08:00
|
|
|
|
Returns:
|
|
|
|
|
是否近似相等
|
|
|
|
|
"""
|
|
|
|
|
return abs(x - y) < epsilon
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *func* `sign(x: float = False) -> str`
|
2024-08-28 12:02:30 +08:00
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**说明**: 获取数的符号。
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**参数**:
|
|
|
|
|
> - x: 数
|
|
|
|
|
> - only_neg: 是否只返回负数的符号
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 15:05:02 +08:00
|
|
|
|
**返回**: 符号 + - ""
|
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def sign(x: float, only_neg: bool=False) -> str:
|
|
|
|
|
"""获取数的符号。
|
|
|
|
|
Args:
|
|
|
|
|
x: 数
|
|
|
|
|
only_neg: 是否只返回负数的符号
|
|
|
|
|
Returns:
|
|
|
|
|
符号 + - ""
|
|
|
|
|
"""
|
|
|
|
|
if x > 0:
|
|
|
|
|
return '+' if not only_neg else ''
|
|
|
|
|
elif x < 0:
|
|
|
|
|
return '-'
|
|
|
|
|
else:
|
|
|
|
|
return ''
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *func* `sign_format(x: float = False) -> str`
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
|
|
|
|
|
**说明**: 格式化符号数
|
2024-08-28 10:52:17 +08:00
|
|
|
|
-1 -> -1
|
|
|
|
|
1 -> +1
|
|
|
|
|
0 -> ""
|
|
|
|
|
|
2024-08-29 13:46:59 +08:00
|
|
|
|
**参数**:
|
|
|
|
|
> - x: 数
|
|
|
|
|
> - only_neg: 是否只返回负数的符号
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-29 15:05:02 +08:00
|
|
|
|
**返回**: 符号 + - ""
|
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def sign_format(x: float, only_neg: bool=False) -> str:
|
|
|
|
|
"""格式化符号数
|
|
|
|
|
-1 -> -1
|
|
|
|
|
1 -> +1
|
|
|
|
|
0 -> ""
|
|
|
|
|
Args:
|
|
|
|
|
x: 数
|
|
|
|
|
only_neg: 是否只返回负数的符号
|
|
|
|
|
Returns:
|
|
|
|
|
符号 + - ""
|
|
|
|
|
"""
|
|
|
|
|
if x > 0:
|
|
|
|
|
return f'+{x}' if not only_neg else f'{x}'
|
|
|
|
|
elif x < 0:
|
|
|
|
|
return f'-{abs(x)}'
|
|
|
|
|
else:
|
|
|
|
|
return ''
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### **class** `Approx`
|
|
|
|
|
### *method* `__init__(self, value: RealNumber)`
|
2024-08-28 21:27:52 +08:00
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def __init__(self, value: RealNumber):
|
|
|
|
|
self.value = value
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *method* `__eq__(self, other)`
|
2024-08-28 21:27:52 +08:00
|
|
|
|
|
2024-08-28 12:02:30 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 12:02:30 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def __eq__(self, other):
|
|
|
|
|
if isinstance(self.value, (float, int)):
|
|
|
|
|
if isinstance(other, (float, int)):
|
|
|
|
|
return abs(self.value - other) < APPROX
|
|
|
|
|
else:
|
|
|
|
|
self.raise_type_error(other)
|
|
|
|
|
elif isinstance(self.value, Vector3):
|
|
|
|
|
if isinstance(other, (Vector3, Point3, Plane3, Line3)):
|
|
|
|
|
return all([approx(self.value.x, other.x), approx(self.value.y, other.y), approx(self.value.z, other.z)])
|
|
|
|
|
else:
|
|
|
|
|
self.raise_type_error(other)
|
|
|
|
|
```
|
|
|
|
|
</details>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *method* `raise_type_error(self, other)`
|
2024-08-28 21:27:52 +08:00
|
|
|
|
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 10:52:17 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def raise_type_error(self, other):
|
|
|
|
|
raise TypeError(f'Unsupported type: {type(self.value)} and {type(other)}')
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|
2024-08-28 22:07:43 +08:00
|
|
|
|
### *method* `__ne__(self, other)`
|
2024-08-28 21:27:52 +08:00
|
|
|
|
|
2024-08-28 12:02:30 +08:00
|
|
|
|
|
|
|
|
|
<details>
|
2024-08-29 13:46:59 +08:00
|
|
|
|
<summary> <b>源代码</b> </summary>
|
2024-08-28 12:02:30 +08:00
|
|
|
|
|
|
|
|
|
```python
|
|
|
|
|
def __ne__(self, other):
|
|
|
|
|
return not self.__eq__(other)
|
|
|
|
|
```
|
|
|
|
|
</details>
|
|
|
|
|
|