Python Sympy Plane.projection()方法

在Sympy中，函数Plane.projection()用于将给定的点沿着平面法线投影到给定的平面上，这意味着，投影是沿着平面的法向量方向。

语法: Plane.projection(pt)

参数 :
pt: Point or Point3D

返回: Point3D

示例 #1:

# import sympy and Plane, Point, Point3D
from sympy import Plane, Point, Point3D
  
p = Point(2, 2)
  
# using Plane()
p1 = Plane(Point3D(1, 2, 3), normal_vector =(0, 1, 1))
  
# using projection()
projectionPoint = p1.projection(p)
  
print(projectionPoint)

输出:

Point3D(2, 7/2, 3/2)

示例 #2:

# import sympy and Plane, Point, Point3D
from sympy import Plane, Point, Point3D
  
p = Point3D(2, 2, 2)
  
# using Plane()
p1 = Plane(Point3D(1, 2, 3), normal_vector =(0, 1, 1))
  
# using projection()
projectionPoint = p1.projection(p)
  
print(projectionPoint)

输出:

Point3D(2, 5/2, 5/2)