看下這個 +<7`Gn(n3
EDGES !! or CURVE a;8q7nC
R=5 !! Vertex radius of curvature XhhV7J_F
K=-1 !! Conic constant M |6l
H=5 !! Outer aperture height `2()Vf
O=0 !! Inner obscuration height Y?ouB
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 =*_T;;E
SHIFT Y 1 !!偏移 ?%(:
SWEEP AXIS 360 Z !!旋轉