/// <summary>
/// Method to find the object under the mleader arrow
/// </summary>
/// <param name="mLeader"></param>
/// <returns></returns>
private static ObjectId GetObjectUnderArrow(this MLeader mLeader)
{
var leaderInd = mLeader.GetLeaderIndexes();
var objId = ObjectId.Null;
var acCurDoc = Application.DocumentManager.MdiActiveDocument;
var acCurDb = acCurDoc.Database;
var acCurEd = acCurDoc.Editor;
try
{
if (leaderInd.Count != 0)
{
var leaderLineInd = mLeader.GetLeaderLineIndexes((int)leaderInd[0]);
var arrowPt = mLeader.GetFirstVertex((int)leaderLineInd[0]);
SelectionSet ss = null;
if (LayoutManager.Current.CurrentLayout == "Model")
{
arrowPt = arrowPt.Trans(acCurEd, CoordSystem.Wcs, CoordSystem.Ucs);
var p = arrowPt;
var tol = 0.01;
var p1 = new Point3d(p.X - tol, p.Y - tol, p.Z - tol);
var p2 = new Point3d(p.X + tol, p.Y + tol, p.Z + tol);
var res = acCurEd.SelectCrossingWindow(p1, p2);
ss = res.Value;
}
else
{
var layoutName = LayoutManager.Current.CurrentLayout;
using (var acTrans = acCurDb.TransactionManager.StartTransaction())
{
var dbDict = (DBDictionary)acTrans.GetObject(acCurDb.LayoutDictionaryId, OpenMode.ForRead);
if (dbDict.Contains(layoutName))
{
var id = dbDict.GetAt(layoutName);
var curLayout = acTrans.GetObject(id, OpenMode.ForRead) as Layout;
if (curLayout != null)
{
var vPorts = new List <Viewport>();
//Get viewports from chosen layout
using (
var blkTblRec =
acTrans.GetObject(curLayout.BlockTableRecordId, OpenMode.ForRead) as
BlockTableRecord)
{
if (blkTblRec != null)
{
foreach (var lObjId in blkTblRec)
{
if (lObjId == acCurDb.PaperSpaceVportId)
{
continue;
}
var acVp = acTrans.GetObject(lObjId, OpenMode.ForWrite) as Viewport;
if (acVp != null && !acVp.IsErased)
{
vPorts.Add(acVp);
}
}
}
}
if (vPorts.Count > 0)
{
var insideVp = false;
var vpLocation = 0;
for (var index = 0; index < vPorts.Count; index++)
{
var acVp = vPorts[index];
if (arrowPt.IsInside(acVp.GeometricExtents))
{
insideVp = true;
vpLocation = index;
break;
}
}
if (insideVp)
{
var psVpPnts = new Point3dCollection();
// now extract the viewport geometry
vPorts[vpLocation].GetGripPoints(psVpPnts, new IntegerCollection(),
new IntegerCollection());
// let's assume a rectangular vport for now, make the cross-direction grips square
var tmp = psVpPnts[2];
psVpPnts[2] = psVpPnts[1];
psVpPnts[1] = tmp;
var xform = vPorts[vpLocation].Dcs2Wcs() * vPorts[vpLocation].Psdcs2Dcs();
arrowPt = arrowPt.TransformBy(xform);
// now switch to MS
acCurEd.SwitchToModelSpace();
// set the CVPort
Application.SetSystemVariable("CVPORT", vPorts[vpLocation].Number);
var p = arrowPt;
var tol = 0.01;
var p1 = new Point3d(p.X - tol, p.Y - tol, p.Z - tol);
var p2 = new Point3d(p.X + tol, p.Y + tol, p.Z + tol);
var res = acCurEd.SelectCrossingWindow(p1, p2);
if (res.Status != PromptStatus.OK)
{
acCurEd.WriteMessage(res.Status.ToString());
}
ss = res.Value;
// now switch to MS
acCurEd.SwitchToPaperSpace();
}
}
}
}
else
{
acTrans.Abort();
}
acTrans.Commit();
}
}
if (ss == null)
{
return(objId);
}
var objIds = new ObjectIdCollection();
foreach (SelectedObject obj in ss)
{
if (obj.ObjectId != _curLeaderId)
{
objIds.Add(obj.ObjectId);
}
}
if (objIds.Count > 0)
{
objId = objIds[objIds.Count - 1];
}
}
}
catch (Exception)
{
//Ignored
}
return(objId);
}