【转载】C# 实现CAD的Isolate隔离对象
本帖最后由 qq1254582201 于 2024-9-25 16:51 编辑public static void IsolateSelection()
{
var doc = Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
var selection = ed.GetSelection();
if (selection.Status != PromptStatus.OK)
return;
var ids = new HashSet<ObjectId>(selection.Value.GetObjectIds());
using (var tr = new OpenCloseTransaction())
{
var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId id in curSpace)
{
if (!ids.Contains(id))
{
var entity = (Entity)tr.GetObject(id, OpenMode.ForWrite);
entity.Visible = false;
}
}
tr.Commit();
}
}
public static void UnisolateAll()
{
var db = HostApplicationServices.WorkingDatabase;
using (var tr = new OpenCloseTransaction())
{
var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId id in curSpace)
{
var entity = (Entity)tr.GetObject(id, OpenMode.ForRead);
if (!entity.Visible)
{
entity.UpgradeOpen();
entity.Visible = true;
}
}
tr.Commit();
}
}
//Summary: Lets user select seed point -> Zooms Extent -> Selects Boundary set -> Isolates them -> Creates boundary -> Unisolates all -> Returns Boundaries
public DBObjectCollection CreateBoundary(Transaction trans, BlockTableRecord btr, DBObjectCollection boundarySet, Point3d internalSeedPoint)
{
var doc = Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
var ResultingBoundaries = new DBObjectCollection(); //Return
var ResultingBoundaryIds = new ObjectIdCollection();
try
{
//Summary: Isolate Boundary set -> Create boundary -> Unisolates Boundary set ;
//Isolate the boundarySet entities.
var hiddenEntities = new List<Entity>();
foreach (ObjectId id in btr)
{
var entity = (Entity)trans.GetObject(id, OpenMode.ForWrite);
if (boundarySet.Contains(entity))
{
entity.Visible = true;
}
else
{
entity.Visible = false;
hiddenEntities.Add(entity);
}
}
//Creating and adding boundary objects to the drawing. Also collecting its ObjectIds for later use.
//Tracing the bondary out of input curves. Here InternalSeedPoint is a point inside the boundary that is going to be generated.
ResultingBoundaries = ed.TraceBoundary(internalSeedPoint, false);
//Appending the boundary to the databse
foreach (Polyline boundary in ResultingBoundaries)
{
btr.AppendEntity(boundary);
trans.AddNewlyCreatedDBObject(boundary, true);
//Collecting ResultingBoundaryIds for later use (if required)
ResultingBoundaryIds.Add(boundary.ObjectId);
}
//Unisolate the boundarySet entities.
foreach (Entity entity in hiddenEntities)
{
entity.Visible = true;
}
}
catch (Exception ex)
{
Application.ShowAlertDialog("Error: " + ex.Message);
}
return ResultingBoundaries;
}
public void MakeSelection(DBObjectCollection selectedObjects)
{
Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
ObjectId[] selectedObjIds = new ObjectId;
for (int i = 0; i < selectedObjects.Count; i++)
{
selectedObjIds = selectedObjects.ObjectId;
}
//Mark selection on the drawing
ed.SetImpliedSelection(selectedObjIds);
}
public static void IsolateSelection()
{
var doc = Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
var selection = ed.GetSelection();
if (selection.Status != PromptStatus.OK) return;
var ids = new HashSet<ObjectId>(selection.Value.GetObjectIds());
using (var tr = new OpenCloseTransaction())
{
var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId id in curSpace)
{
if (!ids.Contains(id))
{
var entity = (Autodesk.AutoCAD.DatabaseServices.Entity)tr.GetObject(id, OpenMode.ForWrite);
entity.Visible = false;
}
}
tr.Commit();
}
}public static void UnisolateAll()
{
var db = HostApplicationServices.WorkingDatabase;
using (var tr = new OpenCloseTransaction())
{
var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId id in curSpace)
{
var entity = (Autodesk.AutoCAD.DatabaseServices.Entity)tr.GetObject(id, OpenMode.ForWrite);
if (!entity.Visible)
{
//curSpace.DowngradeOpen();
//entity.UpgradeOpen();
entity.Visible = true;
//entity.DowngradeOpen(); //Temporarily Added.
}
}
tr.Commit();
}
}
public static void IsolateSelection()
{
var doc = Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
var selection = ed.GetSelection();
if (selection.Status != PromptStatus.OK) return;
var ids = new HashSet<ObjectId>(selection.Value.GetObjectIds());
using (var tr = new OpenCloseTransaction())
{
var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId id in curSpace)
{
if (!ids.Contains(id))
{
var entity = (Autodesk.AutoCAD.DatabaseServices.Entity)tr.GetObject(id, OpenMode.ForWrite);
entity.Visible = false;
}
}
tr.Commit();
}
} using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
using Autodesk.AutoCAD.Runtime;
public class AdvancedIsolateObjects
{
public void IsolateObjectsByLayerAndGroup()
{
Document doc = Application.DocumentManager.MdiActiveDocument;
Database db = doc.Database;
Editor ed = doc.Editor;
// Prompt the user to select objects
PromptSelectionResult selectionResult = ed.GetSelection();
if (selectionResult.Status != PromptStatus.OK)
return;
// Get the selected object IDs
ObjectId[] selectedIds = selectionResult.Value.GetObjectIds();
using (Transaction tr = db.TransactionManager.StartTransaction())
{
BlockTableRecord currentSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
// Create a set to store layers and groups of selected objects
HashSet<string> layers = new HashSet<string>();
HashSet<string> groups = new HashSet<string>();
// Collect layers and groups of selected objects
foreach (ObjectId id in selectedIds)
{
Entity entity = (Entity)tr.GetObject(id, OpenMode.ForRead);
layers.Add(entity.Layer);
// Check if the entity is part of a group
if (entity.GroupId != ObjectId.Null)
{
Group group = (Group)tr.GetObject(entity.GroupId, OpenMode.ForRead);
groups.Add(group.Name);
}
}
// Iterate through all objects in the current space
foreach (ObjectId id in currentSpace)
{
Entity entity = (Entity)tr.GetObject(id, OpenMode.ForWrite);
// Check if the entity is in the selected layers or groups
if (layers.Contains(entity.Layer) || (entity.GroupId != ObjectId.Null && groups.Contains(((Group)tr.GetObject(entity.GroupId, OpenMode.ForRead)).Name)))
{
// Make the entity visible
entity.Visible = true;
}
else
{
// Hide the entity
entity.Visible = false;
}
}
tr.Commit();
}
// Regenerate the drawing to reflect changes
doc.Editor.Regen();
}
}
谢谢分享！
public static void IsolateSelection()
{
var doc = Application.DocumentManager.MdiActiveDocument;
var db = doc.Database;
var ed = doc.Editor;
var selection = ed.GetSelection();
if (selection.Status != PromptStatus.OK)
return;
var ids = new HashSet<ObjectId>(selection.Value.GetObjectIds());
using (var tr = new OpenCloseTransaction())
{
var curSpace = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);
foreach (ObjectId id in curSpace) //已经得到 selection.Value.GetObjectIds()了，为什么还要在curSpace遍历呢？？？
{
if (!ids.Contains(id))
{
var entity = (Entity)tr.GetObject(id, OpenMode.ForWrite);
entity.Visible = false;
}
}
tr.Commit();
}
}
foreach (ObjectId id in curSpace) //已经得到 selection.Value.GetObjectIds()了，为什么还要在curSpace遍历呢？？？
guohq 发表于 2024-9-25 23:40
foreach (ObjectId id in curSpace) //已经得到 selection.Value.GetObjectIds()了，为什么还要在cu ...
十分有道理，脱裤子代码有点多 代码写的太长了吧 guohq 发表于 2024-9-25 23:40
foreach (ObjectId id in curSpace) //已经得到 selection.Value.GetObjectIds()了，为什么还要在cu ...
没有研究过，估计是要剔除编组吧
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