看下這個 .`h:1FP8
EDGES !! or CURVE 6.3qux9
R=5 !! Vertex radius of curvature xHn "D@
K=-1 !! Conic constant kl5Y{![/&f
H=5 !! Outer aperture height S^SF!k=
O=0 !! Inner obscuration height !$,e)89
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 QLH6Nmk
SHIFT Y 1 !!偏移 B,{Q[
SWEEP AXIS 360 Z !!旋轉