看下這個 G+Z ,ic
EDGES !! or CURVE X-fWdoN @-
R=5 !! Vertex radius of curvature mRRZ/m?A(
K=-1 !! Conic constant (lS[a
H=5 !! Outer aperture height %K')_NS@
O=0 !! Inner obscuration height D
(8Z90
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 Hv/5)
SHIFT Y 1 !!偏移 Md@x2Ja
SWEEP AXIS 360 Z !!旋轉