看下這個 ~q5-9{ma
EDGES !! or CURVE J;"nm3[.q
R=5 !! Vertex radius of curvature 'iGMn_&
K=-1 !! Conic constant +}\29@{W
H=5 !! Outer aperture height 8|Q4-VK<!
O=0 !! Inner obscuration height h
bdEw=r?
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 d^_itC;-,
SHIFT Y 1 !!偏移 n<+~ zQ
SWEEP AXIS 360 Z !!旋轉