public override DBObject DeepClone(
DBObject dbObject, DBObject ownerObject,
IdMapping idMap, bool isPrimary
)
{
// First we deep clone the object via the parent
DBObject res =
base.DeepClone(dbObject, ownerObject, idMap, isPrimary);
// Then we check for our XData
if (PipeDrawOverrule.PipeRadiusForObject(res) > 0.0)
{
// A transaction is needed by the set function to access
// the RegApp table - we could also assume the app name
// is registered and have a separate implementation
// not taking the transaction...
// Just as we might also have chosen to remove the XData
Transaction tr =
dbObject.Database.TransactionManager.StartTransaction();
using (tr)
{
PipeDrawOverrule.SetPipeRadiusOnObject(tr, res, 0.0);
tr.Commit();
}
}
return(res);
}
public void MakePipe()
{
Document doc =
Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
// Ask the user to select the entities to make into pipes
PromptSelectionOptions pso =
new PromptSelectionOptions();
pso.AllowDuplicates = false;
pso.MessageForAdding =
"\n选择对象变为管道: ";
PromptSelectionResult selRes =
doc.Editor.GetSelection(pso);
// If the user didn't make valid selection, we return
if (selRes.Status != PromptStatus.OK)
{
return;
}
SelectionSet ss = selRes.Value;
// Ask the user for the pipe radius to set
PromptDoubleOptions pdo =
new PromptDoubleOptions(
"\n指定管道半径:"
);
// Use the previous value, if if already called
if (_radius > 0.0)
{
pdo.DefaultValue = _radius;
pdo.UseDefaultValue = true;
}
pdo.AllowNegative = false;
pdo.AllowZero = false;
PromptDoubleResult pdr =
ed.GetDouble(pdo);
// Return if something went wrong
if (pdr.Status != PromptStatus.OK)
{
return;
}
// Set the "last radius" value for when
// the command is called next
_radius = pdr.Value;
// Use a transaction to edit our various objects
Transaction tr =
db.TransactionManager.StartTransaction();
using (tr)
{
// Loop through the selected objects
foreach (SelectedObject o in ss)
{
// We could choose only to add XData to the objects
// we know will use it (Lines and Circles, for now)
DBObject obj =
tr.GetObject(o.ObjectId, OpenMode.ForWrite);
PipeDrawOverrule.SetPipeRadiusOnObject(tr, obj, _radius);
}
tr.Commit();
}
}