看下這個 s.VtmAH
EDGES !! or CURVE UEkn@^&bg
R=5 !! Vertex radius of curvature X9ua&T2(l
K=-1 !! Conic constant %ae|4u#b
H=5 !! Outer aperture height tb#9TF
O=0 !! Inner obscuration height YVSAYv_ZG}
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 B4fMD]
SHIFT Y 1 !!偏移 2VB|a;Mo
SWEEP AXIS 360 Z !!旋轉