/// <summary>
/// Creates BlockReference from the block with the given name.
/// Throws ArgumentException if block with such a name does not exist.
/// </summary>
/// <param name="blockName"></param>
/// <param name="insertionPoint"></param>
/// <param name="space">The model space or some of the paper spaces</param>
/// <param name="blockTable">The block table of the associated drawing in the helper.</param>
/// <returns>The BlockReference of the block</returns>
private BlockReference CreateBlockReference(string blockName, UnitsValue sourceBlockMeasurementUnits, Point3d insertionPoint, BlockTableRecord space, BlockTable blockTable)
{
Matrix3d ucs = _ed.CurrentUserCoordinateSystem;
BlockReference newBlockReference;
//All open objects opened during a transaction are closed at the end of the transaction.
using (Transaction transaction = _db.TransactionManager.StartTransaction())
{
blockTable.UpgradeOpen();
// If the DWG already contains this block definition we will create a block reference and not a copy of the same definition
if (!blockTable.Has(blockName))
{
_logger.Error(MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + MethodBase.GetCurrentMethod().Name + " : Block with name '" + blockName + "' does not exist.");
transaction.Abort();
throw new ArgumentException("Block with name '" + blockName + "' does not exist.");
}
BlockTableRecord sourceBlockTableRecord = (BlockTableRecord)transaction.GetObject(blockTable[blockName], OpenMode.ForRead);
newBlockReference = new BlockReference(insertionPoint, sourceBlockTableRecord.ObjectId);
var converter = new MeasurementUnitsConverter();
var scaleFactor = converter.GetScaleRatio(sourceBlockMeasurementUnits, blockTable.Database.Insunits);
_ed.CurrentUserCoordinateSystem = Matrix3d.Identity;
newBlockReference.TransformBy(ucs);
_ed.CurrentUserCoordinateSystem = ucs;
newBlockReference.ScaleFactors = new Scale3d(scaleFactor);
space.UpgradeOpen();
space.AppendEntity(newBlockReference);
transaction.AddNewlyCreatedDBObject(newBlockReference, true);
AttributeCollection atcoll = newBlockReference.AttributeCollection;
foreach (ObjectId subid in sourceBlockTableRecord)
{
var entity = (Entity)subid.GetObject(OpenMode.ForRead);
var attributeDefinition = entity as AttributeDefinition;
if (attributeDefinition != null)
{
var attributeReference = new AttributeReference();
attributeReference.SetPropertiesFrom(attributeDefinition);
attributeReference.Visible = attributeDefinition.Visible;
attributeReference.SetAttributeFromBlock(attributeDefinition, newBlockReference.BlockTransform);
attributeReference.HorizontalMode = attributeDefinition.HorizontalMode;
attributeReference.VerticalMode = attributeDefinition.VerticalMode;
attributeReference.Rotation = attributeDefinition.Rotation;
attributeReference.Position = attributeDefinition.Position + insertionPoint.GetAsVector();
attributeReference.Tag = attributeDefinition.Tag;
attributeReference.FieldLength = attributeDefinition.FieldLength;
attributeReference.TextString = attributeDefinition.TextString;
attributeReference.AdjustAlignment(_db);
atcoll.AppendAttribute(attributeReference);
transaction.AddNewlyCreatedDBObject(attributeReference, true);
}
}
transaction.Commit();
}
_ed.Regen();
return(newBlockReference);
}
/// <summary>
/// the source drawig should be drawn as number of
/// separate entites with or without attributes.
/// Throws NotImplementedException if invoked with .dxf file
/// </summary>
/// <param name="sourceDrawing"></param>
/// <param name="insertionPoint"></param>
/// <returns>ObjectID of the Block Def that was imported.</returns>
public void ImportDwgAsBlock(string sourceDrawing, Point3d insertionPoint)
{
Matrix3d ucs = _ed.CurrentUserCoordinateSystem;
string blockname = sourceDrawing.Remove(0, sourceDrawing.LastIndexOf("\\", StringComparison.Ordinal) + 1);
blockname = blockname.Substring(0, blockname.Length - 4); // remove the extension
try
{
using (_doc.LockDocument())
{
using (var inMemoryDb = new Database(false, true))
{
#region Load the drawing into temporary inmemory database
if (sourceDrawing.LastIndexOf(".dwg", StringComparison.Ordinal) > 0)
{
inMemoryDb.ReadDwgFile(sourceDrawing, System.IO.FileShare.Read, true, "");
}
else if (sourceDrawing.LastIndexOf(".dxf", StringComparison.Ordinal) > 0)
{
_logger.Error(MethodBase.GetCurrentMethod().DeclaringType.FullName + "." + MethodBase.GetCurrentMethod().Name + " : Tried to invoke the method with .dxf file.");
throw new NotImplementedException("Importing .dxf is not supported in this version.");
//inMemoryDb.DxfIn("@" + sourceDrawing, System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase) + "\\log\\import_block_dxf_log.txt");
}
else
{
throw new ArgumentException("This is not a valid drawing.");
}
#endregion
using (var transaction = _db.TransactionManager.StartTransaction())
{
BlockTable destDbBlockTable = (BlockTable)transaction.GetObject(_db.BlockTableId, OpenMode.ForRead);
BlockTableRecord destDbCurrentSpace = (BlockTableRecord)_db.CurrentSpaceId.GetObject(OpenMode.ForWrite);
// If the destination DWG already contains this block definition
// we will create a block reference and not a copy of the same definition
ObjectId sourceBlockId;
if (destDbBlockTable.Has(blockname))
{
//BlockTableRecord destDbBlockDefinition = (BlockTableRecord)transaction.GetObject(destDbBlockTable[blockname], OpenMode.ForRead);
//sourceBlockId = destDbBlockDefinition.ObjectId;
sourceBlockId = transaction.GetObject(destDbBlockTable[blockname], OpenMode.ForRead).ObjectId;
// Create a block reference to the existing block definition
using (var blockReference = new BlockReference(insertionPoint, sourceBlockId))
{
_ed.CurrentUserCoordinateSystem = Matrix3d.Identity;
blockReference.TransformBy(ucs);
_ed.CurrentUserCoordinateSystem = ucs;
var converter = new MeasurementUnitsConverter();
var scaleFactor = converter.GetScaleRatio(inMemoryDb.Insunits, _db.Insunits);
blockReference.ScaleFactors = new Scale3d(scaleFactor);
destDbCurrentSpace.AppendEntity(blockReference);
transaction.AddNewlyCreatedDBObject(blockReference, true);
_ed.Regen();
transaction.Commit();
// At this point the Bref has become a DBObject and (can be disposed) and will be disposed by the transaction
}
return;
}
//else // There is not such block definition, so we are inserting/creating new one
sourceBlockId = _db.Insert(blockname, inMemoryDb, true);
BlockTableRecord sourceBlock = (BlockTableRecord)sourceBlockId.GetObject(OpenMode.ForRead);
sourceBlock.UpgradeOpen();
sourceBlock.Name = blockname;
destDbCurrentSpace.DowngradeOpen();
var sourceBlockMeasurementUnits = inMemoryDb.Insunits;
try
{
CreateBlockReference(sourceBlock.Name, sourceBlockMeasurementUnits,
insertionPoint,
destDbCurrentSpace,
destDbBlockTable);
}
catch (ArgumentException argumentException)
{
_logger.Error("Error. Check inner exception.", argumentException);
}
_ed.Regen();
transaction.Commit();
}
}
}
}
catch (Exception exception)
{
_logger.Error("Error in ImportDrawingAsBlock().", exception);
}
}