看下這個 Gbpw5n;e
EDGES !! or CURVE k44Q):ncY7
R=5 !! Vertex radius of curvature 5Qwh(C^H
K=-1 !! Conic constant }n:?7
H=5 !! Outer aperture height 6?tlU>A2s
O=0 !! Inner obscuration height I?#85l{>
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 ^"\s eS
SHIFT Y 1 !!偏移 am1[9g8L
SWEEP AXIS 360 Z !!旋轉