IfcOpenShell/IfcOpenShell
Jan 2025 – Feb 2026
13 Months active
Languages Used
GherkinGitIFC SchemaJavaScriptMakefilePythonbpyreStructuredText
Technical Skills
3D Graphics3D ModelingAPI DesignAPI DevelopmentAPI IntegrationBDD
Dion Moult
PROFILE
Dion Moult
Dion contributed extensively to the IfcOpenShell/IfcOpenShell repository, delivering robust BIM and 3D modeling features while maintaining a strong focus on code quality and performance. He engineered core editing and automation capabilities, optimized geometry processing, and modernized Blender integration to improve UI responsiveness and developer experience. Using Python and C++, Dion implemented advanced data handling, API development, and backend workflows, addressing complex challenges in IFC schema management and spatial data reliability. His work included rigorous testing, documentation, and refactoring, ensuring maintainable and scalable solutions. The depth of his engineering enabled stable releases and enhanced productivity for both users and developers.
Overall Statistics
Feature vs Bugs
41%Features
Repository Contributions
490Total
Bugs
212
Commits
490
Features
148
Lines of code
32,214
Activity Months13
Your Network
45 people
Work History
February 2026
7 Commits • 5 Features
Feb 1, 2026February 2026 summary for IfcOpenShell/IfcOpenShell focused on delivering core editing capabilities, performance improvements, and formatting enhancements, with a strong emphasis on maintainability and business value. Highlights include partial reimplementation of bulk text editing integrated into the core, performance optimizations for vertex matching, and refactoring of bulk attribute copy to streamline workflows. Notable performance-related change: disabled loading of indexed colour maps to reduce startup and runtime costs, given its limited usage. Expanded formatting language capabilities with new list operations and signed-number formatting. All changes include targeted commits to enable traceability and future improvements.
7 Commits • 5 Features
Feb 1, 2026February 2026 summary for IfcOpenShell/IfcOpenShell focused on delivering core editing capabilities, performance improvements, and formatting enhancements, with a strong emphasis on maintainability and business value. Highlights include partial reimplementation of bulk text editing integrated into the core, performance optimizations for vertex matching, and refactoring of bulk attribute copy to streamline workflows. Notable performance-related change: disabled loading of indexed colour maps to reduce startup and runtime costs, given its limited usage. Expanded formatting language capabilities with new list operations and signed-number formatting. All changes include targeted commits to enable traceability and future improvements.
February 2026
January 2026
48 Commits • 15 Features
Jan 1, 2026January 2026 monthly summary for IfcOpenShell/IfcOpenShell: Delivered major performance, UI/UX, and stability improvements with a strong emphasis on business value, developer experience, and reliability. Key refactors modernized Blender integration and UI responsiveness, rendering performance was optimized for decorators and dense product previews, and testing/documentation were expanded to reduce risk and accelerate future changes.
January 2026
48 Commits • 15 Features
Jan 1, 2026January 2026 monthly summary for IfcOpenShell/IfcOpenShell: Delivered major performance, UI/UX, and stability improvements with a strong emphasis on business value, developer experience, and reliability. Key refactors modernized Blender integration and UI responsiveness, rendering performance was optimized for decorators and dense product previews, and testing/documentation were expanded to reduce risk and accelerate future changes.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 contributions focused on stabilizing documentation packaging and tightening release hygiene for IfcOpenShell/IfcOpenShell. Key work includes a hotfix to ignore BSDD files during documentation packaging (with import cleanup to streamline the codebase) and a release version bump to reflect the latest changes. These efforts improved documentation packaging reliability (notably for IOS docs during packaging) and established a cleaner, more predictable release process for downstream users.
2 Commits • 1 Features
Nov 1, 2025November 2025 contributions focused on stabilizing documentation packaging and tightening release hygiene for IfcOpenShell/IfcOpenShell. Key work includes a hotfix to ignore BSDD files during documentation packaging (with import cleanup to streamline the codebase) and a release version bump to reflect the latest changes. These efforts improved documentation packaging reliability (notably for IOS docs during packaging) and established a cleaner, more predictable release process for downstream users.
November 2025
October 2025
59 Commits • 21 Features
Oct 1, 2025October 2025 monthly summary for IfcOpenShell/IfcOpenShell: Focused on stability, performance, and enabling modern IFC workflows. Major business value delivered through (1) reliable IfcTester startup and uppercase entity name handling to improve model validation and UX; (2) IFC4 migration readiness with IFC2X3 to IFC4 upgrade path for IfcExtendedMaterialProperties; (3) significant drawing performance improvements via lazy loading of annotations and optimized visibility; (4) expanded automation and CI/CD support for IfcTester workflows and CI config; (5) work scheduling enhancements including auto element selection and total inputs/outputs/elements to improve planning accuracy. Additionally, several UI and robustness fixes (material constituent sets, layer thickness display, glazing/door framing handling) improved data integrity and user experience.
October 2025
59 Commits • 21 Features
Oct 1, 2025October 2025 monthly summary for IfcOpenShell/IfcOpenShell: Focused on stability, performance, and enabling modern IFC workflows. Major business value delivered through (1) reliable IfcTester startup and uppercase entity name handling to improve model validation and UX; (2) IFC4 migration readiness with IFC2X3 to IFC4 upgrade path for IfcExtendedMaterialProperties; (3) significant drawing performance improvements via lazy loading of annotations and optimized visibility; (4) expanded automation and CI/CD support for IfcTester workflows and CI config; (5) work scheduling enhancements including auto element selection and total inputs/outputs/elements to improve planning accuracy. Additionally, several UI and robustness fixes (material constituent sets, layer thickness display, glazing/door framing handling) improved data integrity and user experience.
September 2025
8 Commits
Sep 1, 2025September 2025 monthly summary for IfcOpenShell/IfcOpenShell focusing on build stability, validation semantics alignment, and core schema/validation robustness. Delivered targeted fixes to stabilize Pyodide download and Linux builds, aligned IFC validation/reporting with upstream changes, removed erroneous schema packaging, and hardened null-value facet validation, delivering measurable business value through reduced build failures, more accurate validation reporting, and improved reliability for downstream consumers.
8 Commits
Sep 1, 2025September 2025 monthly summary for IfcOpenShell/IfcOpenShell focusing on build stability, validation semantics alignment, and core schema/validation robustness. Delivered targeted fixes to stabilize Pyodide download and Linux builds, aligned IFC validation/reporting with upstream changes, removed erroneous schema packaging, and hardened null-value facet validation, delivering measurable business value through reduced build failures, more accurate validation reporting, and improved reliability for downstream consumers.
September 2025
August 2025
6 Commits • 3 Features
Aug 1, 2025Monthly performance summary for 2025-08 focused on delivering core features, stabilizing data handling, and improving UI integration in IfcOpenShell/IfcOpenShell. Highlights include feature enhancements, data-type support, and targeted bug fixes that increase data integrity, user productivity, and system reliability.
August 2025
6 Commits • 3 Features
Aug 1, 2025Monthly performance summary for 2025-08 focused on delivering core features, stabilizing data handling, and improving UI integration in IfcOpenShell/IfcOpenShell. Highlights include feature enhancements, data-type support, and targeted bug fixes that increase data integrity, user productivity, and system reliability.
July 2025
8 Commits • 4 Features
Jul 1, 2025July 2025 monthly summary for IfcOpenShell/IfcOpenShell focused on stabilizing development workflows, expanding patching capabilities, and aligning release documentation with current platform support. Deliverables improved CI reliability, cross-platform dev setup, and patch workflow flexibility, while addressing a critical XML decoding bug that could affect IDS schema processing.
8 Commits • 4 Features
Jul 1, 2025July 2025 monthly summary for IfcOpenShell/IfcOpenShell focused on stabilizing development workflows, expanding patching capabilities, and aligning release documentation with current platform support. Deliverables improved CI reliability, cross-platform dev setup, and patch workflow flexibility, while addressing a critical XML decoding bug that could affect IDS schema processing.
July 2025
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary for IfcOpenShell/IfcOpenShell focused on improving data accuracy and UI clarity in BSDD integration by resolving property name/code ambiguity. Delivered a targeted bug fix that ensures property codes are correctly used whenever names are ambiguous, and updated internal structures to reference codes consistently, laying groundwork for scalable BSDD property handling and more reliable downstream data.
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary for IfcOpenShell/IfcOpenShell focused on improving data accuracy and UI clarity in BSDD integration by resolving property name/code ambiguity. Delivered a targeted bug fix that ensures property codes are correctly used whenever names are ambiguous, and updated internal structures to reference codes consistently, laying groundwork for scalable BSDD property handling and more reliable downstream data.
May 2025
20 Commits • 8 Features
May 1, 2025May 2025 monthly summary for IfcOpenShell/IfcOpenShell: Delivered substantial improvements across data interchange, topology editing, spatial data handling, and UI workflows. The work enhances reliability of BIM data exchange, correctness of IFC-related transformations, and user productivity in complex datasets, with a strong emphasis on automated testing and architecture-friendly refactors.
20 Commits • 8 Features
May 1, 2025May 2025 monthly summary for IfcOpenShell/IfcOpenShell: Delivered substantial improvements across data interchange, topology editing, spatial data handling, and UI workflows. The work enhances reliability of BIM data exchange, correctness of IFC-related transformations, and user productivity in complex datasets, with a strong emphasis on automated testing and architecture-friendly refactors.
May 2025
April 2025
37 Commits • 8 Features
Apr 1, 2025April 2025 focused on stability, performance, and developer tooling for IfcOpenShell/IfcOpenShell. Delivered targeted bug fixes that stabilize representations and context handling, improved export reliability, and accelerated rendering workflows. Implemented significant performance gains for shapely fill calculations and expanded testing and debugging capabilities, alongside documentation and release-readiness improvements.
April 2025
37 Commits • 8 Features
Apr 1, 2025April 2025 focused on stability, performance, and developer tooling for IfcOpenShell/IfcOpenShell. Delivered targeted bug fixes that stabilize representations and context handling, improved export reliability, and accelerated rendering workflows. Implemented significant performance gains for shapely fill calculations and expanded testing and debugging capabilities, alongside documentation and release-readiness improvements.
March 2025
68 Commits • 19 Features
Mar 1, 2025March 2025 monthly summary for IfcOpenShell/IfcOpenShell focused on delivering core wall modeling enhancements, data quality improvements, and groundwork for automation/tooling integration. Key features shipped include sloped walls with joins, style deduplication and patching via IfcPatch, a new shape builder X-axis intersection utility, layerset slicing enhancements with direction validation, and substantial groundwork for Wall API integration with Bonsai/test utilities. These changes improve model reliability, reduce duplication, and pave the way for smoother downstream processing and visualization. Additional robustness and UI/drawing improvements contributed to a more stable editing experience and performance when handling large models.
68 Commits • 19 Features
Mar 1, 2025March 2025 monthly summary for IfcOpenShell/IfcOpenShell focused on delivering core wall modeling enhancements, data quality improvements, and groundwork for automation/tooling integration. Key features shipped include sloped walls with joins, style deduplication and patching via IfcPatch, a new shape builder X-axis intersection utility, layerset slicing enhancements with direction validation, and substantial groundwork for Wall API integration with Bonsai/test utilities. These changes improve model reliability, reduce duplication, and pave the way for smoother downstream processing and visualization. Additional robustness and UI/drawing improvements contributed to a more stable editing experience and performance when handling large models.
March 2025
February 2025
100 Commits • 30 Features
Feb 1, 2025February 2025 monthly summary for IfcOpenShell/IfcOpenShell. The team concentrated on delivering core door/shape feature capabilities while hardening the codebase through performance optimizations, bug fixes, and packaging/CI improvements to support a stable release workflow. Key work spanned enhancements to door representations, shape aspects and materials, navigation utilities, and API surface for shape aspects, alongside consolidation of UI and selection tools. Release readiness activities included packaging fixes, compatibility updates, and a 0.8.2 release bump, with a strategic decision to drop Windows 32-bit support for this cycle.
February 2025
100 Commits • 30 Features
Feb 1, 2025February 2025 monthly summary for IfcOpenShell/IfcOpenShell. The team concentrated on delivering core door/shape feature capabilities while hardening the codebase through performance optimizations, bug fixes, and packaging/CI improvements to support a stable release workflow. Key work spanned enhancements to door representations, shape aspects and materials, navigation utilities, and API surface for shape aspects, alongside consolidation of UI and selection tools. Release readiness activities included packaging fixes, compatibility updates, and a 0.8.2 release bump, with a strategic decision to drop Windows 32-bit support for this cycle.
January 2025
126 Commits • 34 Features
Jan 1, 2025January 2025 monthly summary for IfcOpenShell: Delivered key features, addressed critical bugs, and improved performance, stability, and developer experience. Highlights include a refactor of parametric objects into tool.Model, a roof-generation overhaul based on per-face extrusions and cutting planes, and new shape-builder capabilities including blocks and half-space solids. Also advanced boolean editing in item mode with full operator support and recursive selection, and improved UI/UX with default snaps and improved alignment. Strengthened data integrity and export reliability with ODS/XLSX/CSV summary handling improvements and annotation-editing enhancements. A targeted performance rollback addressed a slowdown while preserving progress in feature work. These efforts reduce risk, boost productivity, and deliver tangible business value to users.
126 Commits • 34 Features
Jan 1, 2025January 2025 monthly summary for IfcOpenShell: Delivered key features, addressed critical bugs, and improved performance, stability, and developer experience. Highlights include a refactor of parametric objects into tool.Model, a roof-generation overhaul based on per-face extrusions and cutting planes, and new shape-builder capabilities including blocks and half-space solids. Also advanced boolean editing in item mode with full operator support and recursive selection, and improved UI/UX with default snaps and improved alignment. Strengthened data integrity and export reliability with ODS/XLSX/CSV summary handling improvements and annotation-editing enhancements. A targeted performance rollback addressed a slowdown while preserving progress in feature work. These efforts reduce risk, boost productivity, and deliver tangible business value to users.
January 2025
Activity
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Quality Metrics
Correctness86.8%
Maintainability85.4%
Architecture82.0%
Performance79.2%
AI Usage20.4%
Skills & Technologies
Programming Languages
BashBatchC++CSSGherkinGitHTMLIFCIFC SchemaJavaScript
Technical Skills
3D Graphics3D Graphics Programming3D Modeling3D Software Integration3D Visualization3D modelingAPI DesignAPI DevelopmentAPI IntegrationAPI designAPI integrationAdd-on DevelopmentAddon DevelopmentAlgorithm OptimizationAsset Management
Repositories Contributed To
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