/// <summary>
/// 偏移实体
/// </summary>
/// <param name="id">实体的ObjectId</param>
/// <param name="dis">偏移距离</param>
/// <returns>返回偏移后的实体Id集合</returns>
public static ObjectIdCollection Offset(this ObjectId id, double dis)
{
ObjectIdCollection ids = new ObjectIdCollection();
Curve cur = id.GetObject(OpenMode.ForWrite) as Curve;
if (cur != null)
{
try
{
//获取偏移的对象集合
DBObjectCollection offsetCurves = cur.GetOffsetCurves(dis);
//将对象集合类型转换为实体类的数组，以方便加入实体的操作
Entity[] offsetEnts = new Entity[offsetCurves.Count];
offsetCurves.CopyTo(offsetEnts, 0);
//将偏移的对象加入到数据库
ids = id.Database.AddToModelSpace(offsetEnts);
}
catch
{
Application.ShowAlertDialog("无法偏移！");
}
}
else
{
Application.ShowAlertDialog("无法偏移！");
}
return(ids);//返回偏移后的实体Id集合
}
/// <summary>
/// 偏移实体
/// </summary>
/// <param name="ent">实体</param>
/// <param name="dis">偏移距离</param>
/// <returns>返回偏移后的实体集合</returns>
public static DBObjectCollection Offset(this Entity ent, double dis)
{
DBObjectCollection offsetCurves = new DBObjectCollection();
Curve cur = ent as Curve;
if (cur != null)
{
try
{
offsetCurves = cur.GetOffsetCurves(dis);
Entity[] offsetEnts = new Entity[offsetCurves.Count];
offsetCurves.CopyTo(offsetEnts, 0);
}
catch
{
Application.ShowAlertDialog("无法偏移！");
}
}
else
{
Application.ShowAlertDialog("无法偏移！");
}
return(offsetCurves);
}