怎么用hfss畫橢圓柱?

怎么用hfss畫橢圓柱?
我先畫了個橢圓然后用了那個沿向量sweep結果報錯


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    [warning] Acis warning: "Faces always swept as solids." (3:33 下午  八月 04, 2008)
    [error] Acis error: "Fail to call api_rsw_face_vec.. Acis Error 72027 - Path Curve tangential to the sweep profile " (3:33 下午  八月 04, 2008)
    [error] Body could not be created for part because of invalid parameters to SweepAlongVector operation. (3:33 下午  八月 04, 2008)
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