protected override IEnumerable <CheckResult> CheckImpl(IEnumerable <Autodesk.AutoCAD.DatabaseServices.ObjectId> selectedObjectIds)
{
var result = new List <AntiClockwisePolygonCheckResult>();
if (!selectedObjectIds.Any())
{
return(result);
}
var database = selectedObjectIds.First().Database;
using (var tr = database.TransactionManager.StartTransaction())
{
foreach (var objectId in selectedObjectIds)
{
var pline = tr.GetObject(objectId, OpenMode.ForRead);
if (pline == null)
{
continue;
}
bool bIsCloseWise = false;
if (pline is Polyline)
{
bIsCloseWise = CurveUtils.IsPolygonClockWise(pline as Polyline);
}
else if (pline is Polyline2d)
{
bIsCloseWise = CurveUtils.IsPolygonClockWise(pline as Polyline2d, tr);
}
else
{
continue;
}
if (!bIsCloseWise)
{
result.Add(new AntiClockwisePolygonCheckResult(objectId));
}
}
tr.Commit();
}
return(result);
}