看下這個 9QX{b+}"e
EDGES !! or CURVE Hd2_Cg FB
R=5 !! Vertex radius of curvature 7olA@;$
K=-1 !! Conic constant ovfw _
H=5 !! Outer aperture height [R:O'AP}@}
O=0 !! Inner obscuration height K
6G n
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 (f.A5~e
SHIFT Y 1 !!偏移 d*AV(g#B
SWEEP AXIS 360 Z !!旋轉