import{_ as s,c as i,o as a,a2 as t}from"./chunks/framework.C94oF1kp.js";const y=JSON.parse('{"title":"mbcp.mp_math.point","description":"","frontmatter":{"title":"mbcp.mp_math.point","editLink":false},"headers":[],"relativePath":"api/mp_math/point.md","filePath":"zh/api/mp_math/point.md"}'),n={name:"api/mp_math/point.md"},l=t(`

mbcp.mp_math.point ​

说明: 本模块定义了三维空间中点的类。

class Point3 ​

def __init__(self, x: float, y: float, z: float) ​

说明: 笛卡尔坐标系中的点。

参数:

源代码

在GitHub上查看

python
def __init__(self, x: float, y: float, z: float):
    """
        笛卡尔坐标系中的点。
        Args:
            x: x 坐标
            y: y 坐标
            z: z 坐标
        """
    self.x = x
    self.y = y
    self.z = z

def approx(self, other: Point3, epsilon: float = APPROX) -> bool ​

说明: 判断两个点是否近似相等。

参数:

返回: 是否近似相等

源代码

在GitHub上查看

python
def approx(self, other: 'Point3', epsilon: float=APPROX) -> bool:
    """
        判断两个点是否近似相等。
        Args:
            other:
            epsilon:

        Returns:
            是否近似相等
        """
    return all([abs(self.x - other.x) < epsilon, abs(self.y - other.y) < epsilon, abs(self.z - other.z) < epsilon])

@overload

def self + other: Vector3 => Point3 ​

源代码

在GitHub上查看

python
@overload
def __add__(self, other: 'Vector3') -> 'Point3':
    ...

@overload

def self + other: Point3 => Point3 ​

源代码

在GitHub上查看

python
@overload
def __add__(self, other: 'Point3') -> 'Point3':
    ...

def self + other ​

说明: P + V -> P P + P -> P

参数:

源代码

在GitHub上查看

python
def __add__(self, other):
    """
        P + V -> P
        P + P -> P
        Args:
            other:
        Returns:
        """
    return Point3(self.x + other.x, self.y + other.y, self.z + other.z)

def __eq__(self, other) ​

说明: 判断两个点是否相等。

参数:

源代码

在GitHub上查看

python
def __eq__(self, other):
    """
        判断两个点是否相等。
        Args:
            other:
        Returns:
        """
    return approx(self.x, other.x) and approx(self.y, other.y) and approx(self.z, other.z)

def self - other: Point3 => Vector3 ​

说明: P - P -> V

P - V -> P 已在 :class:Vector3 中实现

参数:

源代码

在GitHub上查看

python
def __sub__(self, other: 'Point3') -> 'Vector3':
    """
        P - P -> V

        P - V -> P  已在 :class:\`Vector3\` 中实现
        Args:
            other:
        Returns:

        """
    from .vector import Vector3
    return Vector3(self.x - other.x, self.y - other.y, self.z - other.z)
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