Revit API 风管对齐

最新推荐文章于 2025-01-20 16:51:47 发布

原创最新推荐文章于 2025-01-20 16:51:47 发布 · 938 阅读

6 ·

CC 4.0 BY-SA版权

本文介绍了一个使用Revit API的外部命令实现调整两条风管间距的方法。通过选择两条风管并获取它们的连接器，计算出两风管之间的直接间距，并通过一系列几何运算调整风管位置以达到指定间距。

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[Transaction(TransactionMode.Manual)]
[Regeneration(RegenerationOption.Manual)]
public class cmd : IExternalCommand
{
/// <summary>
/// 取得风管两端连接器
/// </summary>
/// <param name="duct"></param>
/// <returns></returns>
private List<Connector> getConn(Duct duct)
{
List<Connector> listConn = new List<Connector>();
ConnectorSetIterator csi = duct.ConnectorManager.Connectors.ForwardIterator();
while (csi.MoveNext())
{
Connector conn = csi.Current as Connector;
if (ConnectorType.End == conn.ConnectorType)
{
listConn.Add(conn);
}
else if (ConnectorType.Curve == conn.ConnectorType)
{
//return conn;
}
}
return listConn;
}
public Result Execute(ExternalCommandData cmdData, ref string msg, ElementSet elements)
{
UIDocument uiDoc = cmdData.Application.ActiveUIDocument;
UIApplication uiApp = cmdData.Application;
Document doc = uiDoc.Document;
Selection sel = uiDoc.Selection;

Transaction ts = new Transaction(doc, "http://revit.5d6d.com");
ts.Start();
try
{
Element elDuct0 = doc.GetElement(sel.PickObject(ObjectType.Element, "选择风管1："));
Element elDuct1 = doc.GetElement(sel.PickObject(ObjectType.Element, "选择风管2："));
Duct duct0 = elDuct0 as Duct;
Duct duct1 = elDuct1 as Duct;
List<Connector> listConn0 = getConn(duct0);
List<Connector> listConn1 = getConn(duct1);
Line line0 = Line.get_Bound(listConn0[0].Origin, listConn0[1].Origin);
Line line1 = Line.get_Bound(listConn1[0].Origin, listConn1[1].Origin);
double dDis = line1.Distance(line0.get_EndPoint(0));//直接间距
XYZ xyzVector = GetXYVector(line0, line1);
LocationCurve lc = elDuct1.Location as LocationCurve;
lc.Move(dDis * xyzVector);
ts.Commit();
}
catch (Autodesk.Revit.Exceptions.OperationCanceledException)
{
ts.RollBack();
return Result.Cancelled;
}
catch (Exception ex)
{
ts.RollBack();
}

return Result.Succeeded;
}

/// <summary>
/// 取得平行线的单位向量
/// </summary>
/// <param name="line0"></param>
/// <param name="line1"></param>
/// <returns></returns>
public XYZ GetXYVector(Line line0, Line line1)
{
//基准
XYZ startPoint0 = line0.get_EndPoint(0);
XYZ endPoint0 = line0.get_EndPoint(1);
//参照
XYZ startPoint1 = line1.get_EndPoint(0);
XYZ endPoint1 = line1.get_EndPoint(1);
//
XYZ resultVector = new XYZ(0, 0, 0);

XYZ zStart = new XYZ(startPoint1.X, startPoint1.Y, 0);
XYZ zEnd = new XYZ(endPoint1.X, endPoint1.Y, 0);

Line line = Line.get_Bound(new XYZ(startPoint0.X, startPoint0.Y, 0), new XYZ(endPoint0.X, endPoint0.Y, 0));
line.MakeUnbound();

//取得一条直线所在直线相垂直的直线
XYZ tPoint = zStart - zEnd;
XYZ zVector = new XYZ(0, 0, 1);
XYZ nPoint = tPoint.CrossProduct(zVector).Normalize() + zStart;
Line lineN = Line.get_Bound(zStart, nPoint);
lineN.MakeUnbound();

//与另外一条风管的交点
IntersectionResultArray intersectionR = new IntersectionResultArray();
SetComparisonResult comparisonR;

comparisonR = line.Intersect(lineN, out intersectionR);

if (SetComparisonResult.Disjoint != comparisonR)
{
if (!intersectionR.IsEmpty)
{
resultVector = intersectionR.get_Item(0).XYZPoint;
}
}

if (!zStart.IsAlmostEqualTo(resultVector))
{
resultVector = (resultVector - zStart).Normalize();
}

return resultVector;
}
}