相交过滤器的应用,比几何相交法简便。Excluding剔除
//找到与风管相交的对象,通过相交过滤器。
[TransactionAttribute(Autodesk.Revit.Attributes.TransactionMode.Manual)]
public class FindIntersectWallsByElement : IExternalCommand
{
public Result Execute(ExternalCommandData commandData, ref string messages, ElementSet elements)
{
UIApplication app = commandData.Application;
Document doc = app.ActiveUIDocument.Document;
Transaction trans = new Transaction(doc, "ExComm");
trans.Start(); //pick the duct
Selection sel = app.ActiveUIDocument.Selection;
Reference ref1 = sel.PickObject(ObjectType.Element, "Please pick a duct");
Element duct = doc.GetElement(ref1); FilteredElementCollector collector = new FilteredElementCollector(doc);
//相交过滤器
ElementIntersectsElementFilter elementFilter = new ElementIntersectsElementFilter(duct, false);
collector.WherePasses(elementFilter); List<ElementId> excludes = new List<ElementId>();
excludes.Add(duct.Id);
collector.Excluding(excludes);//剔除自身 sel.Elements.Clear(); //Add these interseting element to the selection
foreach (Element elem in collector)
{
sel.Elements.Add(elem);
} trans.Commit();
return Result.Succeeded;
}
}
url:http://greatverve.cnblogs.com/p/ElementIntersectsElementFilter.html