看下這個 c-]fKj7
EDGES !! or CURVE ('k<XOi
R=5 !! Vertex radius of curvature GY!C|7kN
K=-1 !! Conic constant P~$<X
H=5 !! Outer aperture height .QWhK|(.!
O=0 !! Inner obscuration height j.?:Gaab?#
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 F#r#}.B='U
SHIFT Y 1 !!偏移 Rs;15@t@
SWEEP AXIS 360 Z !!旋轉