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| public static ObjectId AddBlockTableRecord(Document doc, string blockName, List<ObjectId> ents)
{
Database db = doc.Database;
ObjectId resId = ObjectId.Null;
using (Transaction transaction = db.TransactionManager.StartTransaction())
{
BlockTable bt = db.BlockTableId.GetObject(OpenMode.ForWrite) as BlockTable;
if (bt.Has(blockName))
doc.RemoveBlockDefinition(blockName);
BlockTableRecord btr = new BlockTableRecord();
btr.Name = blockName;
resId = bt.Add(btr);
transaction.AddNewlyCreatedDBObject(btr, true);
ObjectIdCollection collection = new ObjectIdCollection(ents.ToArray());
IdMapping mapping = new IdMapping();
db.DeepCloneObjects(collection, resId, mapping, false);
transaction.Commit();
}
return resId;
}
public static ObjectId InsertBlockReference(Database db, string blockName, Point3d position, Scale3d scale, double rotateAngle)
{
ObjectId blockReferenceId;
using (Transaction transaction = db.TransactionManager.StartTransaction())
{
BlockTable blockTable = db.BlockTableId.GetObject(OpenMode.ForWrite) as BlockTable;
if (!blockTable.Has(blockName)) return ObjectId.Null;
BlockTableRecord blockTableRecord = transaction.GetObject(blockTable[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
BlockReference blockReference = new BlockReference(position, blockTable[blockName]);
blockReference.ScaleFactors = scale;
blockReference.Rotation = rotateAngle;
blockReferenceId = blockTableRecord.AppendEntity(blockReference);
transaction.AddNewlyCreatedDBObject(blockReference, true);
blockTable.DowngradeOpen();
transaction.Commit();
}
return blockReferenceId;
}
public static void RemoveBlockRefrences(this Document doc, string name)
{
List<BlockReference> blocks = GetBlockReferenceByName(doc, name);
ObjectId[] objectIds = new ObjectId[blocks.Count];
for (int i = 0; i < blocks.Count; i++)
{
BlockReference block = blocks[i];
objectIds[i] = block.ObjectId;
}
DwgPainter.DeleteEntities(doc.Database, objectIds);
}
public static List<BlockReference> GetBlockReferenceByName(this Document doc, string name)
{
List<BlockReference> blockReferences = new List<BlockReference>();
Database db = doc.Database;
using (Transaction transaction = doc.TransactionManager.StartTransaction())
{
BlockTable bt = transaction.GetObject(db.BlockTableId, OpenMode.ForRead) as BlockTable;
BlockTableRecord btr = transaction.GetObject(bt[BlockTableRecord.ModelSpace], OpenMode.ForRead) as BlockTableRecord;
foreach (ObjectId id in btr)
{
Entity entity = transaction.GetObject(id, OpenMode.ForRead) as Entity;
if (entity is BlockReference && (entity as BlockReference).Name == name)
{
blockReferences.Add(entity as BlockReference);
}
}
transaction.Commit();
}
return blockReferences;
}
public static List<Entity> GetEntitiesInBlockReference(BlockReference block)
{
if (block == null) return null;
List<Entity> entities = new List<Entity>();
Queue<BlockReference> blocks = new Queue<BlockReference>();
blocks.Enqueue(block);
while (blocks.Count > 0)
{
BlockReference blockReference = blocks.Dequeue();
DBObjectCollection objects = new DBObjectCollection();
blockReference.Explode(objects);
foreach (var obj in objects)
{
if (obj is BlockReference)
blocks.Enqueue(obj as BlockReference);
else if (obj is Line || obj is Polyline || obj is Circle || obj is Arc || obj is Polyline2d)
entities.Add(obj as Entity);
}
}
return entities;
}
public static bool GetPointInTotalSystem(BlockReference reference, Point3d pointInLocalSystem, out Point3d pointInTotalSystem)
{
pointInTotalSystem = Point3d.Origin;
if (reference == null)
return false;
Point3d insertPoint = reference.Position;
double factor = reference.ScaleFactors.X;
double angle = reference.Rotation;
double dist = Math.Sqrt(pointInLocalSystem.X * pointInLocalSystem.X + pointInLocalSystem.Y * pointInLocalSystem.Y) * factor;
double angleDefiniton = DwgPainter.Arctan(pointInLocalSystem.Y, pointInLocalSystem.X);
angle += angleDefiniton;
if (angle > Math.PI * 2)
{
angle -= Math.PI * 2;
}
pointInTotalSystem = new Point3d(insertPoint.X + dist * Math.Cos(angle), insertPoint.Y + dist * Math.Sin(angle), 0);
return true;
}
|
