看下這個 @D-I@Cyl
EDGES !! or CURVE cZ)JvU9]
R=5 !! Vertex radius of curvature w_>\Yd [
K=-1 !! Conic constant W8QP6^lY
H=5 !! Outer aperture height !S&/Zp
O=0 !! Inner obscuration height 423%K$710
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 [2xu`HT02
SHIFT Y 1 !!偏移 |BM#r fQ
SWEEP AXIS 360 Z !!旋轉