Revit中构件的连接与剪切操作

此方法用于两个构件之间的连接及剪切等操作，此方法相当于Revit工具栏中的连接与剪切操作，使用Revit封装的JoinGeometryUtils及SolidSolidCutUtils工具类。
代码如下：

protected override Result ExecuteCommand(ExternalCommandData data, ref string message, ElementSet elements)
{
	UIApplication uiapp = data.Application;
	UIDocument uidoc = uiapp.ActiveUIDocument;
	Document doc = uiapp.ActiveUIDocument.Document;
	//在项目中选中两个构件
	Reference refer_1 = uidoc.Selection.PickObject(ObjectType.Element);
	Element elem_1 = doc.GetElement(refer_1);
	Reference refer_2 = uidoc.Selection.PickObject(ObjectType.Element);
	Element elem_2 = doc.GetElement(refer_2);
	//实体剪切和相交 工程扣减时很有用
	Transaction ts = new Transaction(doc, "cut");
	ts.Start();
	//两个标准族实例的剪切，剪切前判断是否可以剪切
	CutFailureReason res;
	SolidSolidCutUtils.CanElementCutElement(elem_2, elem_1, out res);
	if (res == CutFailureReason.CutAllowed)
		SolidSolidCutUtils.AddCutBetweenSolids(doc, elem_1, elem_2);
	//获取剪切实例的个数
	ICollection list = SolidSolidCutUtils.GetCuttingSolids(elem_1);
	//判断两个构件是否连接
	if (JoinGeometryUtils.AreElementsJoined(doc, elem_1, elem_2) == true)
	{
		//取消连接
		JoinGeometryUtils.UnjoinGeometry(doc, elem_1, elem_2);
		//取消剪切
		SolidSolidCutUtils.RemoveCutBetweenSolids(doc, elem_1, elem_2);
		//连接
		JoinGeometryUtils.JoinGeometry(doc, elem_1, elem_2);
		//切换连接顺序
		JoinGeometryUtils.SwitchJoinOrder(doc, elem_1, elem_2);
		//获取连接对象的个数
		ICollection listid = JoinGeometryUtils.GetJoinedElements(doc, elem_1);
	}
	ts.Commit();
	return Result.Succeeded;
}