NX7.5 使用UF_MODL_create_proj_curves创建投影曲线

 [DllImport("libufun.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "UF_MODL_create_proj_curves")]
    internal static extern int _CreateProjCurves(System.IntPtr curveRefs, System.IntPtr faceRefs, int alongFaceNormal, double[] projVector, out NXOpen.Tag projCurveFeature);

    [DllImport("libufun.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "UF_MODL_create_list")]
    internal static extern int CreateList(out System.IntPtr list);
    [DllImport("libufun.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi, EntryPoint = "UF_MODL_put_list_item")]
    internal static extern int PutListItem(System.IntPtr list, NXOpen.Tag objId);

    internal static System.IntPtr ListFromArray(NXOpen.Tag[] array)
    {
        System.IntPtr intPtr;
        CreateList(out intPtr);
        for (int i = 0; i < array.Length; i++)
        {
            PutListItem(intPtr, array[i]);
        }
        return intPtr;
    }

   /// <summary>
   /// 创建投影特征
   /// </summary>
   /// <param name="curveRefs">需要投影的曲线</param>
   /// <param name="faceRefs">投影面</param>
   /// <param name="alongFaceNormal">是否使用面的法向</param>
   /// <param name="projVector">指定矢量</param>
   /// <param name="projCurveFeature">投影的特征</param>
    public void CreateProjCurves(NXOpen.Tag[] curveRefs, NXOpen.Tag[] faceRefs, int alongFaceNormal, double[] projVector, out NXOpen.Tag projCurveFeature)
    {
        System.IntPtr curveRefs2 = ListFromArray(curveRefs);
        System.IntPtr faceRefs2 = ListFromArray(faceRefs);
        NXOpen.Utilities.JAM.StartUFCall();
        int error = _CreateProjCurves(curveRefs2, faceRefs2, alongFaceNormal, projVector, out projCurveFeature);
        NXOpen.Utilities.JAM.EndUFCall();
        if (error != 0)
        {
            throw NXOpen.NXException.Create(error);
        }
    }