code: def plane_intersection(self, plane, forward_only=False):
          '''return point where line intersects with a plane'''
          l_dot_n = self.vector * plane.normal
          if l_dot_n == 0.0:
              # line is parallel to the plane
              return None
          d = ((plane.point - self.point) * plane.normal) / l_dot_n
          if forward_only and d < 0:
              return None
          return (self.vector * d) + self.poinf plane_intersection(self, plane, forward_only=False):
          '''return point where line intersects with a plane'''
          l_dot_n = self.vector * plane.normal
          if l_dot_n == 0.0:
              # line is parallel to the plane
              return None
          d = ((plane.point - self.point) * plane.normal) / l_dot_n
          if forward_only and d < 0:
              return None
          return (self.vector * d) + self.point
docs: return point where line intersects with a plane