看下這個 Wv_5sPqLW
EDGES !! or CURVE ZLyJ
R=5 !! Vertex radius of curvature oo)P(_"u
K=-1 !! Conic constant 8A"[n>931
H=5 !! Outer aperture height t;Jt+k~
O=0 !! Inner obscuration height >s1FTB-$W
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 1iS9f~
SHIFT Y 1 !!偏移 fU@}]&
SWEEP AXIS 360 Z !!旋轉