看下這個 W 0^.Dx
EDGES !! or CURVE td-2[Sy
R=5 !! Vertex radius of curvature 1zNH[
K=-1 !! Conic constant aRg/oA4}
H=5 !! Outer aperture height -1t"(v
O=0 !! Inner obscuration height TV)bX
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 Fy^*@&
SHIFT Y 1 !!偏移 FC<aX[~&3
SWEEP AXIS 360 Z !!旋轉