Changelog

Version 2025 R2

Notes

• For this release and all subsequent releases, Assembly versions will correspond to TD versions (25.2.0.0, etc.). We reconsidered the previous decision to decouple the two versioning schemes.
• For this release, there are two versions of OpenTD dll's: one for use with .NET 4.8 and AutoCAD 2024, and one for very limited use with .NET 8 and AutoCAD 2025.
• The .NET 4 versions of the dll's will have assembly version 25.2.4.x and will be installed to the GAC, as usual.
• The .NET 8 versions of the dll's will have assembly version 25.2.8.y and will be installed in the TD installation directory. .NET 8 does not use the GAC.
• At release, for .NET 8 / AutoCAD 2025 only OpenTD add-ins are supported. Client/server OpenTD programs are not supported. We are working to fix this.

New Features

• Added ability to override TdConnect settings with end-user config file (see TdConnectUserOverrides)
• Added Domains.*XREF members to find domains from XREF'd dwgs
• added DomainManager.Rename method
• Added RadiationAnalysisGroupManager.PurgeUnused, .Remove, .Merge, and .Copy methods

Performance Improvements

• CoSolver communication to Sinda now works on machines using number formats other than "en-US"
• Improved error checking in CaseSetManager.Run
• Fixed bug with Orbit.DiffuseSkyIRArray units
• Fixed user preferences bug

Assembly version 92.0.0.0

Notes

• For this release and all subsequent releases, OpenTD assemblies will no longer include the version in their filenames. The filenames will not change with each version.
• Assembly versions will no longer correspond to TD versions (24.2.0.0, etc.).
• The first assembly version chosen for this new scheme is 92.0.0.0.

New features

• Comparer now supports different comparison algorithms for different types of data.
• All methods that used to accept Dataset now accept IDataset for greater flexibility.
• DatasetFactory.Load can now be used to load sav, CSR, or savx with path, without knowing type of file.
• MCH_USED added to StandardDataSubtypes.
• Now handles domain names from XREF dwgs.
• Added TIMEN2 support to logic objects.

Performance improvements

• CaptureGraphicsArea is more reliable.
• Fixed various Orbit parameters to correctly use flux or temperature conversions.
• Fixed rename behavior for all properties, including stacks. Entities that use the property now reflect the rename.
• User preferences now set correctly from OpenTD.
• CreateHeatLoad now works with tets.
• Fixed bug where results in UDFA’s associated with fluid objects returned NaN’s.
• Fixed bug where UDFA results were incorrect.
• One-way conductors now show positive heat flow if flow is in the direction of “from” node to “to” node (was reversed).
• Now reading BotInsulationNodeSubmodelIdOption correctly for surfaces.

Version 2024 R2

New features

• Added case set group name parameter to TDSF_CoSolver constructors.
• Added Message member to CompareSuite; just returns Log member.
• Twin lump ids are now automatically sequenced if lump.TwinId == 0.
• Added auto start of OpenTD servers on _SAVEAS for all versions of OpenTD.

Version 2024 R1

Note

This was an administrative release. There is only one new feature: added Comparer.ToString() method.

Version 2023 R2

Major new features

• Added support for controlling item visibility via the ThermalDesktop.VisibilityManager.
• Added ReadMeshDataFile method to read various mesh data formats into TD.
• Added support for stack aliases.
• Added DynamicSindaStatus class for interacting with messages generated by Dynamic Sinda.
• Added limited support for new beta SaveX file format.

Other new features

• Added MeshDisplayer.BaseTrans property -- now you can move FEM's.
• Added experimental CaseSetManager.IsCaseRunning() method for asynchronous cases.
• Added Contactor.Comment property.
• Use lightweight SubmodelNameData's to identify submodels for FloCAD objects.
• Added GetNumberOfDbObjects(...) method.
• Implemented ConvertFDtoFE method.
• Matrix3d.SetOrigin now returns the new matrix instead of void.
• Dataset.Factory.Load method to load sav, savx, or CSR.
• Comparer ctor overload to accept IDatasets instead of Datasets.
• Added Close and ReOpen methods to IDataset.
• Added CloseDatasets and ReOpenDatasets methods to Comparer.
• Added ability to rename and delete aliases.
• Added CaseSetManagerOptions.ShowTextScreenDuringRun member.
• Added Conductor.UseGlobalAccelm member.
• Added RcEntityData.GlobalContactArray member.
• Added RcSolidElement.AnalysisGroupsVolumetric member.
• Added RcFdSolidData.AnalysisGroupsVolumetric member.
• Added FkLocator.Anchor member.
• Added Pipe.LengthDivisions and RadialDivisions members.
• Added Tie.LengthDivisions, RadialDivisions, and UseGlobalAccelm members.

Performance improvements

• CreateCone returns correct node names.
• Polygon.Update() no longer duplicates vertices.
• CoSolver.Continue() returns -1 if SF disconnected, instead of an exception.
• New scr filename and pipe name conventions to avoid Windows Defender mistaking scr files for viruses.
• Avoid issues with duplicate handles in Assembly.
• Fix parsing mixed-case subtypes like "DeltaP."
• Fix GetMeshFD(s) so it populates returned object(s) correctly.
• GetPipe no longer returns pipes with blank signatures.
• Pipe ties now handle domains correctly.
• CaseSet.Run and CaseSetManager.Run now handle casesets with drive symbols from Excel.

Version 6.3

Major New Features

• added Addin capability
• added support for Measures
• added full support for global dwg preferences
• added support for Post Processing Data Mappers
• added support for legacy TD COM interface via ThermalDesktop.SendLegacyComCommand method
• added SF_Launcher for running text-based input models in SINDA/FLUINT
• added SF_CoSolver for running and controlling text-based input models in SINDA/FLUINT
• added access to Logging namespace, allowing client programs to use our rich logging features
• added OpenTDMixedInterface.dll, providing access to some OpenTD features via C/C++/Fortran

Other New Features

• added GetSymbolValue method to return an evaluated symbol value from TD
• added Show/HideModelBrowser methods
• added support for getting and setting the UCS
• added ProgressBar class to control RadCAD progress bar
• added IUserBreak interface to allow end users to cancel an Addin operation
• added several AutoCAD commands for controlling OpenTD servers
• updated all public methods that accept List to accept IEnumerable instead, for LINQ and general flexibility
• updated LogicObjectRoutineTypes values for clarity
• ThermalDesktop.Quit() now defaults to a gentle quit, but can be forced to kill the acad process
• added DomainManager.GetDomain method for getting the entities in any type of domain
• added DataArray constructor that just accepts a list of doubles
• added Enable/Disable Undo methods -- disabling undo can speed up operations
• added overloaded ThermalDesktop.SetView methods, which wrap the Restore*View methods
• added ThermalDesktop.ClearSelection method
• added ThermalDesktop.GetMainWindow method to get the AutoCAD window to use as the owner of OpenTD dialogs
• added Notes.HasPassword list to identify notes that are password-protected
• added Comparer.SaveExceedancePlots method
• Comparer now works with registers
• added Comparer.CompareJustFinalRecord member
• added Get/SetInstanceData methods to allow storage of general data with a TD instance

6.3 New Features Included in 6.2

• added support for 3d polylines
• added ThermalDesktop.Get- and SetNodeCorrespondenceMap methods
• added GetSelection method to prompt the user to select entities manually in TD
• added SetSelection method to highlight objects in the TD graphics window
• added GetEntityTypes method to get entity types from handles
• test applied to objects for consistency before creating or updating heatload
• added GetXREFpathnames method
• added DomainManager.GetAnysetDomain method for getting the entities in an ANYSET domain
• added SS_CONSTANT_TEMP_APPLIED_NODES as an allowable value for Heater.SSMethod

6.3 Performance Improvements Included in 6.2

• sped up most operations by eliminating calls to CheckIfConnected()
• only allow one node in From list in CreateConductor
• use a single instance of CaseSetManager per ThermalDesktop to avoid confusion
• LocalTrans no longer deletes rotation expressions
• GetSubmodels and GetFluidSubmodels now scan database for submodel names before returning
• WeightedAverageDataArray no longer allows negative weights
• Getter speed improved by handling expression units more efficiently

Version 6.2

Major New Features

• added FD Solids
• greater support for FEM's
• OpenTDv62.CoSolver to connect SINDA/FLUINT to other analysis codes
• added support for TD Datasets and contour plotting
• added FloCAD Compartments and Acceleration
• added Trackers
• added Pressure loads
• added logic objects: ArrayInterpolation, PID, UDFA
• added AutoCAD arcs, circles, ellipses, splines, helices, and polylines
• added CaseSetManager class to set Case Set Manager options and run in batch mode
• added UserPreferences class for manipulating some global preferences
• added support for reading PCS files to determine model topology from results
• added Results.Dataset.Browser class to determine heat flows between groups of entities
• added support for reading UDFA results
• overhauled OpenTDv62.Results to emphasize groups of data: submodels, domains, arbitrary groups
• OpenTDv62.Results now outputs NaN for missing data, and uses NaN in plots and DerivedDataArrays
• added support for Text Transient files
• added SpreadsheetDataFile method for reading csv or similar files
• added support for custom DataSubtypes (you're not restricted to T, PL, etc. -- can make your own)
• added FormulaDataArray for combining DataArrays with arbitrary formulae
• added WeightedAverageDataArray class
• added MaxDataArray and MinDataArray types (to return loci of extreme values across input arrays)
• added SumDataArray

Other New Features

• added CompareSuite and CompareAssertion classes, to compare multiple pairs of Datasets
• added Exceedances member, and PlotExceedances and GetExceedancePlots to Comparer
• added EllipticCylinder class (accidentally left out of 6.1)
• added methods to get all rectangles, cones, etc. (all FD Surface types)
• added TdConnectConfig.ShowAcadSplashScreen and .AdditionalAcadCommandline members
• added CreateIn(ThermalDesktop) methods to all entities
• added UpdateIn(ThermalDesktop) methods to all entities
• added Connection.IsEmpty() method
• added AttachedNodeHandles member to all FD surfaces (already included for FD solids and finite elements)
• added DataArrayCollection.Dimension and DataItemCount members
• added ThermalDesktop.GetOpticalPropDBPathname and .GetThermoPropDBPathname methods
• added RadiationAnalysisGroupManager.GetDefault method
• added DataArrayCollection.GetTranspose method
• superceded SubmodelDataArrayCollection and DomainNodeDataArrayCollection with new methods for specifying groups
• added CreatePipe(DbObject centerline) convenience method
• added convenient Write and WriteLine methods to StandardOutput
• updated Contactor/TEC with new features for 6.2
• added ThermalDesktop.GetViewNames method
• now allow CreatePort to create ports with no connections by passing an empty Connection (Handle == "")
• update Plot2d.AddSeries(DataArrayCollection) to allow using first array as x data
• added DataArray copy constructor
• added DataTypeFamilies enum (thermal, fluid, other) and methods to determine from DataTypes or DataSubtypes
• added ThermalDesktop.GetLayerByName method
• added ThermalDesktop.GetCurrentLayer() and .SetCurrentLayer(string name)
• added SaveFile.Close() method and made SaveFile IDisposable
• added CaseSet.ReplaceFilenames method
• added UnitsData constructor that accepts a units expression string
• added read-only members to Node class to help navigate FD/FEM networks (AttachedObjectHandles, etc.)
• added Matrix3d.ToString method
• ExportNodeInfo now defaults to returning a List with the same strings that would otherwise be written to screen or file
• use RcEntityData.AnalysisGroups dictionary to simplify specifying FD Surface radiation analysis groups
• added ThermalDesktop.CreateNode(Point3d origin) method

Performance Improvements

• speed increase for DataArrayCollection Dataset.GetData(...)
• initialize RadCAD members in constructors to reduce errors with CreateIn methods
• fixed NodeBreakdownData to default to a blank Boundaries list
• fixed bug where Assembly.AxisSize wasn't scaling with WorkingUnits
• make SaveFile's threadsafe