I received a query from one of our Technical Sales Specialist whose customer would like to automate a design workflow using Forge Design Automation one aspect of work flow is to explode Text objects in to Geometry [polylines and arcs].
We have an express tool available for AutoCAD called TXTEXP, unfortunately this tool is not available for Forge, I have created a C# program which explodes a text object in to geometry, this custom program can be referenced in a Forge Activity.
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| public void EXPTXT() | |
| { | |
| var doc = Application.DocumentManager.MdiActiveDocument; | |
| var db = doc.Database; | |
| var ed = doc.Editor; | |
| // selection text | |
| ObjectId[] dbtextIds = ed.SelectTextEntitesInModelSpace(); | |
| foreach (ObjectId id in dbtextIds) | |
| { | |
| using (Transaction tr = db.TransactionManager.StartTransaction()) | |
| { | |
| var text = (DBText)tr.GetObject(id, OpenMode.ForWrite); | |
| ObjectId[] ids = new ObjectId[1]; | |
| ids[0] = id; | |
| ed.SetImpliedSelection(ids); | |
| var tempFile = Path.Combine(Path.GetTempPath(), "Q.wmf"); | |
| if (File.Exists(tempFile)) | |
| { | |
| File.Delete(tempFile); | |
| } | |
| ed.Command("_.WMFOUT", tempFile, "", ""); | |
| var viewSize = (double)Application.GetSystemVariable("VIEWSIZE"); | |
| var screenSize = (Point2d)Application.GetSystemVariable("SCREENSIZE"); | |
| double factor = viewSize * (screenSize.X / screenSize.Y); | |
| var viewCtr = (Point3d)Application.GetSystemVariable("VIEWCTR"); | |
| //Transform viewCtr from UCS to DCS | |
| Matrix3d matUCS2DCS = ed.UCS2WCS() * ed.WCS2DCS(); | |
| viewCtr = viewCtr.TransformBy(matUCS2DCS); | |
| var p1 = new Point3d(viewCtr.X - (factor / 2.0), viewCtr.Y - (viewSize / 2.0), .0); | |
| var p2 = new Point3d(viewCtr.X + (factor / 2.0), viewCtr.Y + (viewSize / 2.0), .0); | |
| //Transorm p1,p2 from DCS to UCS; | |
| Matrix3d matDCS2UCS = ed.DCS2WCS() * ed.WCS2UCS(); | |
| p1 = p1.TransformBy(matDCS2UCS); | |
| p2 = p2.TransformBy(matDCS2UCS); | |
| Point2d wmfinBlockPos = new Point2d(p1.X, p2.Y); | |
| var tempWithOutExt = Path.Combine(Path.GetDirectoryName(tempFile), | |
| Path.GetFileNameWithoutExtension(tempFile)); | |
| ed.Command("_.WMFIN", tempWithOutExt, wmfinBlockPos, "2", "", ""); | |
| try | |
| { | |
| var wmfBlock = tr.GetObject(ed.SelectLastEnt(), OpenMode.ForWrite) as BlockReference; | |
| DBObjectCollection pElems = new DBObjectCollection(); | |
| wmfBlock?.Explode(pElems); | |
| var space = (BlockTableRecord)tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite); | |
| foreach (DBObject elem in pElems) | |
| { | |
| space.AppendEntity(elem as Entity); | |
| tr.AddNewlyCreatedDBObject(elem, true); | |
| } | |
| //Purge unused WMFIN Block and reference | |
| ObjectId wmfBtr = GetNonErasedTableRecordId(db.BlockTableId, wmfBlock.Name); | |
| ObjectIdCollection blockIds = new ObjectIdCollection(); | |
| blockIds.Add(wmfBtr); | |
| db.Purge(blockIds); | |
| foreach (ObjectId oId in blockIds) | |
| { | |
| DBObject obj = tr.GetObject(oId, OpenMode.ForWrite); | |
| obj.Erase(); | |
| } | |
| } | |
| catch (Exception ex) | |
| { | |
| ed.WriteMessage(ex.Message); | |
| } | |
| finally | |
| { | |
| //Erase text entity | |
| text.Erase(); | |
| tr.Commit(); | |
| } | |
| } | |
| } | |
| } |
