DESCRIPTION: 判断空间点 P(x, y, z)是否在一个四面体的内部? Let the tetrahedron have vertices V1 = (x1, y1, z1) V2 = (x2, y2, z2) V3 = (x3, y3, z3) V4 = (x4, y4, z4) and your test point be P = (x, y, z). Then the point P is in the tetrahedron if following fivedetermin…