The Building Coder

Length Query and RevitLookup Heralds DLL Paradise

New RevitLookup solves Revit add-in DLL hell, and a clarification on the arc length properties provided by curve elements – Curve Length versus ApproximateLength – RevitLookup dependency isolation ends DLL hell – Add-in dependencies isolation... Read more →

RevitLookup Geometry Visualisation

New RevitLookup BIM element geometry visualization, and 1000 GitHub stars – Versions 2025.0.5, 2025.0.6 and 2025.0.7 – Wiki... Read more →

RevitLookup Updates, Bounding Boxes and Podcast

New releases of RevitLookup vastly expand coverage to include numerous new classes and properties – BIMrras podcast interview – RevitLookup 2025.0.3 – RevitLookup 2025.0.4 – Outline versus BoundingBox – Linking Revit files in BIM360 Docs... Read more →

RevitLookup Hotfix and The Revit 2025 SDK

RevitLookup HotFix 2025.0.1 has been released, and I continue the exploration of the Revit 2025 API – Revit 2025 SDK download – Comparison with previous SDK – Integration into RevitSdkSamples – Compiling the Revit 2025 SDK samples – Custom add-in context menu... Read more →

Revit 2025 and RevitLookup 2025

Revit 2025 has been released and the new Revit API is now based on .NET Core – PackageReference versioning support – RevitLookup 2025 – Revit developer starter kit – Revit 2025 macros with Visual Studio 2022 – Cheap Chinese AI chip... Read more →

Dependency Injection and Model Checker API

Happy New Year! – AU 2023 classes – Dependency injection for Revit API – RevitLookup updates – Model checker API docs – ChatGPT and Maestro AI for Revit scripting – Construction spending rising in the US – Free Will – Vuca... Read more →

3D View, Curved Section and Browser Round-Trip

RevitLookup update, roundtrip interaction between your own browser instance and external command, BIM element location, structural 3D view, curved section view – RevitLookup 2024.0.10 – Calling Revit command from Chromium browser – Chromium browser Js round trip callback – Element location – Create a structural-only 3D view – Creating a curved section in Dynamo – Carbon footprint of AI – Sending data by pigeon – Permaculture farm – The Valley of Code... Read more →

.NET Core Preview and Open Source Add-In Projects

Open-source related discussions, interesting Revit API and AI related news – Revit preview release with C# 7 – RevitLookup 2024.0.9 is here – RevitPythonDocs for Dynamo and pyRevit – New Revit SDK sample browser and launcher – Purge add-in with rave reviews – SpeedCad tools OptionsBar and StatusBar – Managing multiple Revit API versions – DesignScript, Rhino, and other geometry libraries – Trading glass beads for AI IP... Read more →

Docs, Lookup, MEP Calculation and APS DevCon

Good news on APS and the Revit API for the weekend – APS DevCon in Munich and SF – Forma for AEC – RevitApiDocs supports Revit 2024 – RevitLookup 2024.0.8 – User MEP calculation 2024 – Wastewater pipe calculation – The password game... Read more →

Sustainability, Lookup, Sub-Elements and Wall Types

Forma sustainability flyer – RevitLookup 2024.0.6 and support for previous releases – Modify view workset editable – Selection SetReferences – WallType naming best practices... Read more →

64 Bit Ids, Revit and RevitLookup Updates

Revit and RevitLookup updates and 64 bit element id handling – Revit 2023.1.2 – Revit 2024.0.2 – RevitLookup 2024.0.5 – Backward compatible 64 bit element id – 15-minute cities – Cloud data carbon footprint – Live annotated `https` request log... Read more →

Nice Accelerator and Compiling the Revit 2024 SDK

APS cloud accelerators in Nice and Medellin – Compiling the Revit 2024 SDK samples – Visual introduction to machine learning... Read more →

News Reel, Roadmap and RevitLookup Updates

More news and updates related to Revit 2024, and some little titbits on AI and literature: – News reel and AEC roadmaps – Revit API training – RevitLookup 2024 updates – Free Dolly open-source instruction-tuned LLM – Websites powered by AI – Walkaway by Cory Doctorow... Read more →

Revit 2024 and RevitLookup 2024

Revit 2024 released and RevitLookup 2024 enhanced with new UI, Windows 11 support, new core, extensability and usability features – Brand-new user interface – Themes – Extended context menu – Tooltips – Snoop Selection on Modify tab – Smooth navigation – Windows 11 Mica effect and Snap Layouts – Searchbar – Brand-new Engine core – Extensions – Display all methods – Generic names support – Methods overloads – Extensible storage – Extending Functionality – Snoop Point, Sub-Element, UI Application – Component manager – PerformanceAdviser – Registry research: schemas, services, updaters – Explore built-in and APS (formerly Forge) units – Event monitor – Reworked search – Visual search in a project – OTA update – RevitLookup ideas – Vote: Where would you like to snoop? ... Read more →

Lookup Ideas, Jigs and ACC Docs Access

A request for new ideas for enhancing RevitLookup, implementing a pickpoint rubber band and opening BIMs on ACC Docs – Request for RevitLookup ideas – Transient elements for jig – Opening a model in ACC Docs – Stop using JPEG – Stop using voice id... Read more →

Immutable UniqueId and Revit Database Explorer

A new initiative to improve RevitLookup, and take care handling and trying to convert between an element id and its unique id – Immutable UniqueId, mutable element id – Revit database explorer... Read more →

MEP API Intro and RevitPythonShell Lookup Nuptials

Back to the beginning with a quick look at the Revit MEP API, and a great step forward for RevitPythonShell – Revit MEP API intro – RevitPythonShell RevitLookup nuptials... Read more →

Outer Walls, Lookup Update and Filtering

Freshening up a few of our favourite recurring topics – RevitLookup update – Filtering for multiple built-in categories – Retrieving all outer walls – Zen and the art of React programming... Read more →

Revit 2023 and RevitLookup 2023

Revit 2023 has been released, including the Revit 2023 SDK, and so has RevitLookup 2023... Read more →

RevitLookup, WPF, Preventing Modification

Different approaches to prevent modification of certain elements and the latest news on RevitLookup – Prevent modification – RevitLookup updates – RevitLookupWpf – Pilcrow... Read more →

Installer Asset, FormIt and Quaternions

Notes on FormIt and its JavaScript API, the new automatically generated RevitLookup MSI installer asset, transformations and quaternions – FormIt API and geographical context – RevitLookup MSI installer asset – Transform and quaternions... Read more →

New Analytical Model API

Important news coming for structural developers, further development in RevitLookup, notes on extensible storage and JavaScript – New Analytical Model API – Praise for modeless RevitLookup – Benchmarking generic Any versus Count – Escape RevitLookup – Use extensible storage carefully – jQuery is widespread but outdated... Read more →

Revit 2022.1 SDK, RevitLookup Build and Install

Exciting news with a lot of changes to RevitLookup and The Building Coder samples – Revit 2022.1 SDK released – WallCrossSection vs. WallCrossSectionDefinition – RevitLookup build and install – Bye-bye lookup builds – The Building Coder samples revamped – Copy as HTML update – Image cleanup and a robot arm... Read more →

Bridges, Regeneration and Modeless RevitLookup

The most exciting RevitLookup enhancement in its entire history, yet another need for regeneration and a great new option for your personal safety – Modeless RevitLookup – Need for regen for read-only parameter – Structural bridge design – Outdoor seatbelt... Read more →

Snooping Parts, C# Templates and Python Topics

A neat RevitLookup enhancement, powerful new Revit add-in template, and a couple of Python related topics – RevitLookup handles PartUtils – Nice3point Revit add-in C# template – IronPython hosting in C# add-in – Python 3, CPython, pyRevit and Dynamo... Read more →

Installer, List of Failures, Adjacent Rooms and Walls

We discuss enhancements to RevitLookup, a list of all built-in Revit failures, and a neat utility to determine all room-wall adjacencies – Adjacent rooms and walls – List of all built-in failures – Recent RevitLookup updates – RevitLookup installation... Read more →

RevitLookup Update, Fuslogvw and Override Joins

Here are a couple of the interesting topics that came up in the last couple of days – Numerous RevitLookup enhancements – Revit API Labs training material 2022 – Visual Studio Revit add-in templates 2022 – The SetGeometryCurve overrideJoins argument – Exploring assembly reference DLL hell with Fuslogvw... Read more →

Revit 2022 SDK and The Building Coder Samples

The Revit 2022 SDK is now available for download from the Revit Developer Centre autodesk.com/developrevit. I logged my experiences installing it, setting up RvtSamples, loading the SDK external commands, and migrating The Building Coder samples to the new release – First the logs – Revit 2022 SDK warnings – Setting up RvtSamples – The Building Coder samples migration – ParameterType and ForgeTypeId – O'Reilly answers... Read more →

Revit 2022 Migrates BIM360 Team to Docs

We continue the foray into Revit 2022 enhancements with a real-world migration tool using the new SaveAsCloudModel functionality and the flat migration of RevitLookup – Save as cloud model from BIM360 Team to Docs – RevitLookup 2022 – A librarian's take on corona... Read more →

Model Group and DA4R Language in Forge

Today, let's look at two Japanese Forge questions, on model groups and the Revit engine language, another RevitLookup enhancement, and, while we're talking about languages, a surprising scientific discovery on naked mole-rat dialects – Retrieving Revit model group in Forge – Specifying the Revit UI language in DA4R – RevitLookup supports ScheduleDefinition GetField – Naked mole-rats speak in community dialects – Van Gogh 360... Read more →

Splits: Persona, Collector, Region, Tag, Modification

I need to come to terms with a split personality. Meanwhile, lots more going on in the Revit API discussion forum – Two Jeremys – Multiple collectors versus multiple filters – RevitLookup handles split region offsets – Python and Dynamo autotag without overlap – Custom errors and preventing changes – Ecological cost of crypto currency and art... Read more →

Simple IUpdater and other TBC Updates

A nice new minimal DMU example and updates and enhancements to several other important sample applications – Simple dynamic model updater example – ExportCncFab SortMark update – RevitLookup exception on view GetTemplateParameterIds... Read more →

RevitLookup Continuous Integration and GraphQL

Let's start the week with a look at the new RevitLookup CI system and a GraphQL interface for Revit – RevitLookup CI on GitLab – GitLab CI YAML – GraphQL for Revit – The Tamm Tree... Read more →

RevitLookup 2021 with Multi-Release Support

I hope you are happy and healthy and enjoyed your Easter eggs! During the holiday, I updated RevitLookup for Revit 2021, and Harry Mattison added his multi-release building enhancements into the main solution as well – Revit 2021 add-ins require .NET 4.8 – RevitLookup flat migration to Revit 2021 – Support for multi-release building... Read more →

New PC, KLH Snoop, Annotations and Vertex Handling

I have been very busy and motivated indeed setting up a new computer this week. Nonetheless, I was able to keep going full steam with Revit API related issues as well – Setting up a new MacBook – KLH Engineers RevitDeveloperTools snooping tool – Pulling text from annotation tags – Vertex handling – The true meaning of pizza... Read more →

SketchIt, Lookup Family Types, Definition Names

Today, we present yet another RevitLookup enhancement, a note on an undocumented built-in parameter change and a neat Forge Design Automation for Revit sample app – RevitLookup family types and parameter definition names – Bitmap aspect ratio built-in parameter renamed – DA4R SketchIt demo generates walls... Read more →

Forge DA4R IFC Support and Snoop Enhancements

Let's close this eventful week with two important enhancements added to the Forge Design Automation API for Revit and our beloved RevitLookup tool – IFC Support in the Design Automation for Revit API – RevitLookup Snoop Enhancements... Read more →

RevitLookup and SDK for Revit 2020

Happy Easter! The post on What's New in the Revit 2020 API is overdue... for the time being, of course, you can refer to the documentation included with the Revit 2020 SDK, either Revit Platform API Changes and Additions.docx or the corresponding section in the help file RevitAPI.chm. I promise you there is some really juicy stuff in there! Here are some other quick notes as an Easter present for you – RevitLookup for Revit 2020 – Revit 2020 SDK posted – Generative Design with Philippe Starck... Read more →

Forge Picture, Debugging, Snooping Appearances

Today, let's look at the Forge architecture, Revit add-in debug, edit and continue, and yet another RevitLookup enhancement – High-level picture of Forge – Debug and continue in a Revit add-in – Snooping appearance assets... Read more →

Retrieving and Snooping Dependent Elements

Håvard Leding of Symetri raises another exciting topic on using the the GetDependentElements method to retrieve and snoop dependent elements, e.g., the sketch of a floor and the model lines defining the floor boundary in that sketch – The GetDependentElements method – Snoop dependent elements – CmdSnoopModScopeDependents – RevitLookup update... Read more →

New RevitLookup Snoops Edges, Faces and Links

Håvard Leding of Symetri added three new commands to RevitLookup – Three new RevitLookup commands – About "Snoop Pick Face" – About "Pick Linked Element" – Running in a family document... Read more →

Retrieving Linked IfcZone Elements Using Python

Today, I present a little exploration of how to access zones defined in an IFC file in Revit. If you are following this blog closely, you might guess that this is related to the room boundary CSV exporter project that I recently discussed. For this exploration, I installed and used RevitPythonShell. Here are the detailed steps – Importing IFC zones into Revit – Installing and using RevitPythonShell – Programmatically accessing IFC zones in Revit... Read more →

Dashboard, Regen and Revit API Panel at AU

Topics to start the week – Revit API panel at AU in Las Vegas – Automatic BIM dashboard data extraction – When to regenerate the document? – RevitLookup centre parent for forms... Read more →

RevitLookup 2019 and New SDK Samples

I migrated RevitLookup to Revit 2019, which was very easy. Next, I compared the directory contents to discover the new SDK samples – RevitLookup 2019 – New Revit 2019 SDK samples... Read more →

RevitLookup Search by Element and Unique Id

Александр Пекшев aka Modis @Pekshev implemented another useful RevitLookup enhancement to search and snoop elements by element id or unique id – Search and snoop by element id or unique id – File changes – The built-in Select by Id command, Zoom To and StringSearch – RevitLookup update... Read more →

Export Geometry and Snoop Stable Representation

Александр Пекшев aka Modis @Pekshev submitted a very succinct and useful pull request for RevitLookup that I integrated right away, and provides many other valuable inputs as well – Snoop stable representation of References – Project point on plane correction – Revit export geometry to AutoCAD via XML – RevitExportGeometryToAutocad – Description – Versions – Using – Example... Read more →

Edge Loop, Point Reference Plane and Column Line

A whole bunch of exciting Revit API topics to start the week – RevitLookup updated to use NuGet Revit API package – Determining the outer-most EdgeLoop – How to determine the location curve for a steel column – Determining a reference plane from a reference point... Read more →

Forge, Installed Version, Move Group, Name Filter

A biggish post rather late in the week... still answering too many cases – Forge for AEC demos and sample code – Determining the starting view – Detecting installed Revit version – Detecting installed C3D version – Moving items inside a detail group – Filtering for family instances and types by family name... Read more →

Revit versus Forge, Ids and Add-In Installation

Forge versus Revit programming – Access Revit BIM data and element ids from BIM360 – Unique IDs for Forge viewer elements – Edit and export Revit properties in Forge – Upcoming Forge accelerators – Updated Visual Studio Revit add-in wizard installation – Question on RevitLookup installation – RevitLookup cannot snoop everything... Read more →

Sensors, BIM, AI, RevitLookup, Fuzzy Comparison

We continue patrolling the well-trodden paths of BIM, AI, Revit precision and RevitLookup – Connected BIM – Intuitive AI – Fuzzy Comparison – RevitLookup 2018.0.0.1... Read more →