FreeCAD/FreeCAD
Jul 2024 – Dec 2025
16 Months active
Languages Used
C++PythonConfigXMLCMakeSVGcfgUI
Technical Skills
C++ DevelopmentUI/UX DesignAppImage IntegrationBug FixingCode refactoringFreeCAD Development
Roy-043
PROFILE
Roy-043
Over 16 months, Bart van Keulen contributed to FreeCAD/FreeCAD by developing and refining core drafting, BIM, and UI features, focusing on reliability and maintainability. He engineered robust geometry processing, improved object lifecycle handling, and standardized UI elements, addressing issues like unit display, dialog duplication, and export reliability. Using Python, C++, and XML, Bart migrated APIs, enhanced test automation, and refactored modules for better code organization and cross-module integration. His work reduced user-facing errors, improved modeling workflows, and strengthened the codebase for future enhancements, demonstrating depth in backend development, UI/UX design, and complex object-oriented programming within a large open-source project.
Overall Statistics
Feature vs Bugs
51%Features
Repository Contributions
154Total
Bugs
49
Commits
154
Features
50
Lines of code
13,542
Activity Months16
Your Network
220 people
Work History
December 2025
2 Commits
Dec 1, 2025December 2025 monthly summary for FreeCAD/FreeCAD focusing on stabilizing user input handling for the Building US unit system and restoring accurate BIM rendering. Delivered two high-priority bug fixes with localized changes to UI input parsing and the rendering pipeline, resulting in improved user experience and visual fidelity. These fixes reduce user-reported issues and align behavior with product expectations for US-unit workflows and BIM demonstrations.
2 Commits
Dec 1, 2025December 2025 monthly summary for FreeCAD/FreeCAD focusing on stabilizing user input handling for the Building US unit system and restoring accurate BIM rendering. Delivered two high-priority bug fixes with localized changes to UI input parsing and the rendering pipeline, resulting in improved user experience and visual fidelity. These fixes reduce user-reported issues and align behavior with product expectations for US-unit workflows and BIM demonstrations.
December 2025
November 2025
2 Commits • 1 Features
Nov 1, 2025Month: 2025-11 — Delivered high-impact BIM enhancements and robust export fixes in FreeCAD/FreeCAD, driving model fidelity, data portability, and maintainability. Key outcomes include refactoring human figure generation to use a point list for flexibility, improving head shape, and reorganizing the generation function for better module structure; plus a reliability-focused fix for OBJ export that reduces vertex duplication and downstream edits.
November 2025
2 Commits • 1 Features
Nov 1, 2025Month: 2025-11 — Delivered high-impact BIM enhancements and robust export fixes in FreeCAD/FreeCAD, driving model fidelity, data portability, and maintainability. Key outcomes include refactoring human figure generation to use a point list for flexibility, improving head shape, and reorganizing the generation function for better module structure; plus a reliability-focused fix for OBJ export that reduces vertex duplication and downstream edits.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on strengthening the GUI utilities foundation in FreeCAD/FreeCAD. Delivered a GUI Utilities Refactor that moves toggle_working_plane to draftutils.gui_utils, centralizing GUI-related utility functions and preserving behavior across the application. No major bug fixes were recorded this month; the work centered on architectural improvement with a positive impact on future feature delivery and stability. Overall, this change reduces duplication, improves consistency, and lays groundwork for easier testing and extension of GUI features. Technologies/skills demonstrated include Python scripting for UI utilities, Qt-based GUI considerations, code refactoring and modularization, and disciplined Git practices (rebasing).
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 — Focused on strengthening the GUI utilities foundation in FreeCAD/FreeCAD. Delivered a GUI Utilities Refactor that moves toggle_working_plane to draftutils.gui_utils, centralizing GUI-related utility functions and preserving behavior across the application. No major bug fixes were recorded this month; the work centered on architectural improvement with a positive impact on future feature delivery and stability. Overall, this change reduces duplication, improves consistency, and lays groundwork for easier testing and extension of GUI features. Technologies/skills demonstrated include Python scripting for UI utilities, Qt-based GUI considerations, code refactoring and modularization, and disciplined Git practices (rebasing).
October 2025
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary focusing on key accomplishments, major bug fixes, impact, and technologies demonstrated for FreeCAD/FreeCAD.
September 2025
1 Commits
Sep 1, 2025September 2025 monthly summary focusing on key accomplishments, major bug fixes, impact, and technologies demonstrated for FreeCAD/FreeCAD.
August 2025
4 Commits • 2 Features
Aug 1, 2025Monthly performance summary for 2025-08 (FreeCAD/FreeCAD): Delivered two UX-focused feature sets in the Draft and BIM/Draft workflows, emphasizing usability, consistency, and observability. Implemented Draft Module UX Enhancements to standardize Draft toolbar labels, improve 3-point arc placement, and add edge-face snapping, alongside UI/UX clarity and logging improvements to reduce warning noise and clarify object naming. These changes accelerate drafting tasks, improve reliability in geometry creation, and provide clearer diagnostics for maintainers. Commits provide traceability to UI/UX and logging changes.
4 Commits • 2 Features
Aug 1, 2025Monthly performance summary for 2025-08 (FreeCAD/FreeCAD): Delivered two UX-focused feature sets in the Draft and BIM/Draft workflows, emphasizing usability, consistency, and observability. Implemented Draft Module UX Enhancements to standardize Draft toolbar labels, improve 3-point arc placement, and add edge-face snapping, alongside UI/UX clarity and logging improvements to reduce warning noise and clarify object naming. These changes accelerate drafting tasks, improve reliability in geometry creation, and provide clearer diagnostics for maintainers. Commits provide traceability to UI/UX and logging changes.
August 2025
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025: Reliability and UX enhancements for FreeCAD/FreeCAD. Implemented defensive fixes for the Draft tool to guard against None mouse objects during MouseDelay, reducing runtime attribute errors. Enhanced BimBox input handling to align length, width, and height with X/Y/Z axes, detect in-command shortcuts, and parse only the numeric portion on focus change. These changes reduce error states, improve modeling workflows, and demonstrate robust input handling and maintainable code across Python-based UI logic.
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025: Reliability and UX enhancements for FreeCAD/FreeCAD. Implemented defensive fixes for the Draft tool to guard against None mouse objects during MouseDelay, reducing runtime attribute errors. Enhanced BimBox input handling to align length, width, and height with X/Y/Z axes, detect in-command shortcuts, and parse only the numeric portion on focus change. These changes reduce error states, improve modeling workflows, and demonstrate robust input handling and maintainable code across Python-based UI logic.
June 2025
3 Commits • 1 Features
Jun 1, 2025June 2025 focused on delivering UI consistency and unit standardization for drafting workflows in FreeCAD, and addressing cross-module initialization reliability. Key features delivered include the UI refactor for array tools (Circular, Orthogonal, Polar) and the ShapeString tool, standardizing linear displays to millimeters and angular displays to degrees, and removing redundant UI initializations to improve UI clarity. Major bugs fixed include ensuring the Type attribute is consistently initialized during object creation and loading across Draft and BIM modules by moving initialization from onDocumentRestored to __init__ and loads, and fixing the loads method for ifc_objects.py. Together, these efforts reduced user confusion, improved data integrity, and strengthened maintainability for future enhancements. This work demonstrates Python refactoring, UI modernization, and robust object lifecycle handling across complex modules, delivering tangible business value through improved usability and stability.
3 Commits • 1 Features
Jun 1, 2025June 2025 focused on delivering UI consistency and unit standardization for drafting workflows in FreeCAD, and addressing cross-module initialization reliability. Key features delivered include the UI refactor for array tools (Circular, Orthogonal, Polar) and the ShapeString tool, standardizing linear displays to millimeters and angular displays to degrees, and removing redundant UI initializations to improve UI clarity. Major bugs fixed include ensuring the Type attribute is consistently initialized during object creation and loading across Draft and BIM modules by moving initialization from onDocumentRestored to __init__ and loads, and fixing the loads method for ifc_objects.py. Together, these efforts reduced user confusion, improved data integrity, and strengthened maintainability for future enhancements. This work demonstrates Python refactoring, UI modernization, and robust object lifecycle handling across complex modules, delivering tangible business value through improved usability and stability.
June 2025
May 2025
7 Commits • 4 Features
May 1, 2025May 2025 performance summary for FreeCAD/FreeCAD: Delivered core UI/UX and reliability improvements that reduce modeling errors and enhance user productivity, while strengthening the object model and test infrastructure. Key features include UI and Unit Display Improvements for BIM/Draft, Sketch Creation Robustness, Automatic BIM Library Task Panel Lifecycle, and Internal Object Model Refactor. Major bug fix targeted at test reliability. Overall impact centers on business value from improved accuracy, faster iterations, and maintainable code. Technologies/skills demonstrated span Python scripting, BIM/Draft UI/UX work, unit handling and typography enhancements, and refactoring toward a backward-compatible Part::FeaturePython object model.
May 2025
7 Commits • 4 Features
May 1, 2025May 2025 performance summary for FreeCAD/FreeCAD: Delivered core UI/UX and reliability improvements that reduce modeling errors and enhance user productivity, while strengthening the object model and test infrastructure. Key features include UI and Unit Display Improvements for BIM/Draft, Sketch Creation Robustness, Automatic BIM Library Task Panel Lifecycle, and Internal Object Model Refactor. Major bug fix targeted at test reliability. Overall impact centers on business value from improved accuracy, faster iterations, and maintainable code. Technologies/skills demonstrated span Python scripting, BIM/Draft UI/UX work, unit handling and typography enhancements, and refactoring toward a backward-compatible Part::FeaturePython object model.
April 2025
12 Commits • 7 Features
Apr 1, 2025April 2025 monthly summary for FreeCAD/FreeCAD focused on stability, feature delivery, and developer experience across BIM, Draft, and ArchSchedule modules. Key work centered on robust geometry processing, improved datum/working-plane support, and enhanced document/UI handling. Deliveries reduced post-edit rework, aligned UI labels and task panels with modern UX, and positioned the project for maintainability and scalable future API migrations.
12 Commits • 7 Features
Apr 1, 2025April 2025 monthly summary for FreeCAD/FreeCAD focused on stability, feature delivery, and developer experience across BIM, Draft, and ArchSchedule modules. Key work centered on robust geometry processing, improved datum/working-plane support, and enhanced document/UI handling. Deliveries reduced post-edit rework, aligned UI labels and task panels with modern UX, and positioned the project for maintainability and scalable future API migrations.
April 2025
March 2025
28 Commits • 4 Features
Mar 1, 2025March 2025 resolved several high-impact issues and delivered core feature improvements for Draft and BIM workflows in FreeCAD/FreeCAD. Key features include automated dimension text flipping to improve readability and BIM curtain wall panel generation within spanned grid openings. UI and stability refinements across the Draft module were also shipped to enhance usability and reduce incidental errors.
March 2025
28 Commits • 4 Features
Mar 1, 2025March 2025 resolved several high-impact issues and delivered core feature improvements for Draft and BIM workflows in FreeCAD/FreeCAD. Key features include automated dimension text flipping to improve readability and BIM curtain wall panel generation within spanned grid openings. UI and stability refinements across the Draft module were also shipped to enhance usability and reduce incidental errors.
February 2025
18 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for FreeCAD/FreeCAD focusing on delivering core drafting capabilities, stabilizing export workflows, and improving UI/UX across Draft, Assembly, and BIM/Arch workflows. Key work spanned feature delivery, reliability fixes, and UI consistency, with coherent engineering work that maps directly to business value: faster design iteration, more reliable file export/import, and easier adoption of BIM/Arch components.
18 Commits • 3 Features
Feb 1, 2025February 2025 monthly summary for FreeCAD/FreeCAD focusing on delivering core drafting capabilities, stabilizing export workflows, and improving UI/UX across Draft, Assembly, and BIM/Arch workflows. Key work spanned feature delivery, reliability fixes, and UI consistency, with coherent engineering work that maps directly to business value: faster design iteration, more reliable file export/import, and easier adoption of BIM/Arch components.
February 2025
January 2025
34 Commits • 15 Features
Jan 1, 2025January 2025: Focused on stabilizing the development pipeline and delivering user-facing and core improvements across FreeCAD/FreeCAD. Investments in test framework modernization, build/import reliability, and BIM/Draft feature enhancements, coupled with UI correctness and core stability fixes, drove tangible business value through faster feedback loops, more reliable builds, and improved drafting workflows.
January 2025
34 Commits • 15 Features
Jan 1, 2025January 2025: Focused on stabilizing the development pipeline and delivering user-facing and core improvements across FreeCAD/FreeCAD. Investments in test framework modernization, build/import reliability, and BIM/Draft feature enhancements, coupled with UI correctness and core stability fixes, drove tangible business value through faster feedback loops, more reliable builds, and improved drafting workflows.
December 2024
12 Commits • 5 Features
Dec 1, 2024December 2024 Monthly Summary for FreeCAD/FreeCAD focusing on UI polish, robustness enhancements, and maintainability improvements across Draft and BIM modules. Highlights include changes that improve user efficiency, modeling accuracy, and code quality, with clear business value in faster workflows, fewer manual workarounds, and more reliable tooling.
12 Commits • 5 Features
Dec 1, 2024December 2024 Monthly Summary for FreeCAD/FreeCAD focusing on UI polish, robustness enhancements, and maintainability improvements across Draft and BIM modules. Highlights include changes that improve user efficiency, modeling accuracy, and code quality, with clear business value in faster workflows, fewer manual workarounds, and more reliable tooling.
December 2024
November 2024
23 Commits • 5 Features
Nov 1, 2024November 2024 — FreeCAD/FreeCAD. Focused on stability, usability, and BIM/Draft workflow improvements. Delivered key features in Draft, refined UI behavior, and resolved high-impact bugs to enhance reliability and business value. Major features included subelements selection for Draft_Fillet, reintroduction of the human figure in BIM+Draft, and UI polish for hatch task panel defaults and AutoGroup sorting, plus preserved original view props when splitting objects. Critical bugs resolved encompassed concurrency in todo code, param observer scaling multiplier errors, Shape2DView finish behavior, radius input focus handling, and UI/preferences cleanup, along with legacy DXF importer improvements. These efforts reduced flaky behavior, improved drafting workflows, and strengthened interoperability between BIM and Draft tooling.
November 2024
23 Commits • 5 Features
Nov 1, 2024November 2024 — FreeCAD/FreeCAD. Focused on stability, usability, and BIM/Draft workflow improvements. Delivered key features in Draft, refined UI behavior, and resolved high-impact bugs to enhance reliability and business value. Major features included subelements selection for Draft_Fillet, reintroduction of the human figure in BIM+Draft, and UI polish for hatch task panel defaults and AutoGroup sorting, plus preserved original view props when splitting objects. Critical bugs resolved encompassed concurrency in todo code, param observer scaling multiplier errors, Shape2DView finish behavior, radius input focus handling, and UI/preferences cleanup, along with legacy DXF importer improvements. These efforts reduced flaky behavior, improved drafting workflows, and strengthened interoperability between BIM and Draft tooling.
October 2024
4 Commits
Oct 1, 2024Month 2024-10 focused on stabilizing Draft module tests and ensuring compatibility with AppImage packaging. Delivered robust non-GUI save handling, restored view initialization for Draft objects, guarded against index errors during document restore, and updated resource paths for AppImage testing. These changes reduce test flakiness, improve CI reliability, and enhance cross-packaging support for FreeCAD/FreeCAD.
4 Commits
Oct 1, 2024Month 2024-10 focused on stabilizing Draft module tests and ensuring compatibility with AppImage packaging. Delivered robust non-GUI save handling, restored view initialization for Draft objects, guarded against index errors during document restore, and updated resource paths for AppImage testing. These changes reduce test flakiness, improve CI reliability, and enhance cross-packaging support for FreeCAD/FreeCAD.
October 2024
July 2024
1 Commits • 1 Features
Jul 1, 2024July 2024 monthly summary for FreeCAD/FreeCAD: Delivered a user-facing UI polish in the FEM_CreateElementsSet menu by updating the command text to sentence case, improving readability and consistency across the FEM UI. The change is captured in commit a8533ca58eedc8a878c83b37a65316e0d69701b5. This small, low-risk enhancement reduces user cognitive load for new users and aligns with the project’s UI guidelines. No major bugs were fixed this month; the focus was on UX polish and maintainability.
July 2024
1 Commits • 1 Features
Jul 1, 2024July 2024 monthly summary for FreeCAD/FreeCAD: Delivered a user-facing UI polish in the FEM_CreateElementsSet menu by updating the command text to sentence case, improving readability and consistency across the FEM UI. The change is captured in commit a8533ca58eedc8a878c83b37a65316e0d69701b5. This small, low-risk enhancement reduces user cognitive load for new users and aligns with the project’s UI guidelines. No major bugs were fixed this month; the focus was on UX polish and maintainability.
Activity
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Quality Metrics
Correctness88.4%
Maintainability87.8%
Architecture81.6%
Performance80.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
C++CMakeConfigFCStdPythonSVGUIXMLcfg
Technical Skills
3D Graphics3D ModelingAPI DevelopmentAPI MigrationAppImage IntegrationBIMBIM DevelopmentBIM Software DevelopmentBack-end DevelopmentBackend DevelopmentBug FixBug FixingBuild SystemBuild System ConfigurationC++
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