public static void SelectHolePolygons()
{
var objectIds = new ObjectId[0];
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
objectIds = ed.GetSelection().Value.GetObjectIds();
if (objectIds.Count() == 0)
{
//过滤选择polyline
var tvs = new[]
{
new TypedValue((int)DxfCode.Operator, "<or"),
new TypedValue((int)DxfCode.Start, "LWPOLYLINE"),
new TypedValue((int)DxfCode.Start, "POLYLINE"),
new TypedValue((int)DxfCode.Operator, "or>")
};
var filter = new SelectionFilter(tvs);
var selectionOpts = new PromptSelectionOptions();
var currDoc = Application.DocumentManager.MdiActiveDocument;
//选择polyline
PromptSelectionResult result = currDoc.Editor.GetSelection(selectionOpts, filter);
if (result.Status == PromptStatus.OK || result.Value.Count >= 1)
{
objectIds = result.Value.GetObjectIds();
}
}
//
if (objectIds.Count() > 0)
{
var count = objectIds.Count();
Document document = Application.DocumentManager.MdiActiveDocument;
//int count = SetHolePolygons(document.Database, objectIds);
document.Editor.WriteMessage("将{0}个多边形设定为扣除面积的图形", count);
}
}
public static void SelectHoleToRemoveArea()
{
var holeIds = new ObjectId[0];
ObjectId parcelId = ObjectId.Null;
Document document = Application.DocumentManager.MdiActiveDocument;
document.Editor.WriteMessage("\n选择需要扣除面积的孔洞: ");
var result = StartSelectPolyline(false);
if (result.Status != PromptStatus.OK)
{
return;
}
// 洞
if (result.Value.Count >= 1)
{
holeIds = result.Value.GetObjectIds();
}
// 检查地块是否封闭
using (var tr = document.Database.TransactionManager.StartTransaction())
{
foreach (var objectId in holeIds)
{
var curve = tr.GetObject(objectId, OpenMode.ForRead) as Curve;
if (curve != null && !curve.Closed)
{
document.Editor.WriteMessage("\n错误：选择的孔洞不封闭");
return;
}
}
}
// 外边界
Point3d pickedPoint;
if (!SelectPolylineEntity("\n选择要扣除面积的地块界线: ", "\n实体错误", out parcelId, out pickedPoint) ||
parcelId == ObjectId.Null)
{
return;
}
// 检查地块是否封闭
using (var tr = document.Database.TransactionManager.StartTransaction())
{
var curve = tr.GetObject(parcelId, OpenMode.ForRead) as Curve;
if (curve != null && !curve.Closed)
{
document.Editor.WriteMessage("\n错误：选择的地块界线不封闭");
return;
}
}
// 如果地块是合适的
if (parcelId.IsValid && holeIds.Any())
{
foreach (var objectId in holeIds)
{
if (objectId == parcelId)
{
document.Editor.WriteMessage("\n错误：句柄为{0}的孔洞与地块边界相同", objectId.Handle);
return;
}
if (!WithIn(objectId, parcelId))
{
document.Editor.WriteMessage("\n错误：句柄为{0}的孔洞不在地块边界内部", objectId.Handle);
return;
}
}
// 新增孔洞到地块
var parcel = new ParcelPolygon(parcelId);
parcel.AddHoleIds(holeIds);
document.Editor.WriteMessage("\n将{0}个多边形设定为扣除面积的孔洞", holeIds.Count());
}
}
