# -*- coding: utf-8 -*-

import numpy as np

def test():
    """

    :rtype: test
    """
    # 平面を定義
    center = np.array([2, 2, 2])
    p1 = np.array([2, 0, 2])
    p2 = np.array([0, 2, 2])

    vec1 = p1 - center
    vec2 = p2 - center
    cross = np.cross(vec1, vec2)
    print("Plane Normal", cross)

    a1 = np.array([3, 3, 2])
    vec3 = a1 -center
    vec4 = np.dot(vec3, cross)
    print("vec4", vec4)

if __name__ == '__main__':
    test()