看下這個 'j#*6xD
EDGES !! or CURVE @0Ic3C[rH6
R=5 !! Vertex radius of curvature &6/[B_.
K=-1 !! Conic constant xQ7l~O
b
H=5 !! Outer aperture height n(1l}TJy
O=0 !! Inner obscuration height 0q()|y?}
CONIC X 0, 0 0 -2*R 1 0 K+1, Y (O) (H) !!構建拋物線 3c-GY:VkLM
SHIFT Y 1 !!偏移 )|ju~qbf
SWEEP AXIS 360 Z !!旋轉