OneCAD-Draft/CHANGELOG.md

OpenCADStudio Changelog

Summary: OpenCADStudio follows a weekly release cycle (Sunday 12:00 UTC) with versioning formatted as v<Year>.<Week> (e.g. v2026.41). This master changelog indexes all releases with an executive summary and links to dedicated per-release changelog documents located in changelogs/.

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Index of Releases

Release	Date	Highlights	Details
Unreleased	2026-10-11 to Present	Docking icon rails, block cycle protection & codec explosion, Web/WASM parity wave (in-place save, offline PWA, workers), MCP dynamic schemas & batch bindings	changelogs/unreleased.md
v2026.41	2026-10-11	Sheet Set Manager (SHEETSET), COUNT command & live tables, associative SWEEP, RTL text, DimStyle per-end arrowheads (DIMBLK1/DIMBLK2), GPU options (Metal/OpenGL)	changelogs/v2026.41.md
v2026.40 / v2026.40.1	2026-10-05	FIELD command & dialog, ATTDEF parity, Blocks palette, MCP DeepZoom pyramidal tiling & SoM visual ID stamps, DWF/DGN underlays, DYNMODE, embedded TrueType PDF, instant layer toggling	changelogs/v2026.40.md
v2026.39	2026-09-27	Block creation & WBLOCK dialogs, Enter autocomplete, Python Host Model architecture, parametric constraints parity, XCLIP boundary clipping, trackpad pan/pinch, tessellation performance	changelogs/v2026.39.md
v2026.38	2026-09-20	2D geometric constraints engine (GEOMCONSTRAINT), External References (XREF) overhaul, 3D OSNAP system (22.7x speedup), DSETTINGS & ALIASEDIT, associative viewport dimensions, 3D SpaceMouse, Windows printing	changelogs/v2026.38.md

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[Unreleased] - 2026-10-13

Summary: Overhaul of the workspace docking and layout system with Photoshop-style vertical icon rails and draggable tabs; deep hardening of block definitions against circular recursion and standard-compliant block explosion (INSERT/MINSERT); major Web/WASM platform parity wave including in-place saving via File System Access API, offline PWA support, and worker-routed operations; plus custom .pat and .lin pattern loading.

🌟 Key Highlights

• Modernized Docking & Workspace System: Photoshop-style collapsible vertical icon rails, auto-hide flyouts, draggable tab reordering, and independent floating palettes. (Contributed by @posnofa and @MarcelP102)
• Block System Hardening & Safe Explosion: Prevents circular/recursive block definitions and render loops. Delegates INSERT/MINSERT explosions to opencadcodec, restoring transformed ATTDEFs, correcting rotated arrays, and consolidating definition ops. (Contributed by @KarimJerbi)
• MCP Extensibility & Schema Preflight: Added side-effect-free preflight validation, on-demand entity creation schemas, batch parameter bindings, and specialist workflow guides. (Contributed by @KarimJerbi)
• Major Web / WASM Platform Wave: In-place local saving via File System Access API, offline PWA, crash recovery (restore-all), clipboard image pasting, worker-routed WBLOCK/SAVEALL/ARCHIVE, and in-browser PDF plotting. (Contributed by @posnofa, @HakanSeven12, and Claude Opus 5.5)
• Custom Resources & Compatibility: Loading for user .pat hatch and .lin linetype files, view backgrounds, and strict DWG reader compliance. (Contributed by @HakanSeven12 and @ramox81)

👉 View Full Unreleased Release Notes

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[v2026.41] - 2026-10-11

Summary: Major feature milestone introducing the Sheet Set Manager (SHEETSET) with .dst project support; the automated entity COUNT command and palette with dynamic table generation; network-integrated associative swept surfaces (SWEEP); complete right-to-left (RTL) text layout in MTEXT; independent dimension style per-end arrowheads (DIMBLK1/DIMBLK2); table cell style overrides; GPU hardware selection options (Metal/OpenGL); MCP differential capture payload optimizations; and extensive drafting, plotting, spatial indexing, and memory fixes.

🌟 Key Highlights

• Sheet Set Manager (SHEETSET): Complete Sheet Set Manager palette, .dst project wizard, cross-drawing sheet fields, drawing lock-file coordination, and background sheet opening. (Contributed by @ramox81 and @HakanSeven12)
• Automated Entity Counting (COUNT): Interactive block counting across model space or designated boundaries, collision diagnostics, and live evaluated count table insertion. (Contributed by @ramox81 and @HakanSeven12)
• Associative Swept Surfaces & 3D Modeling: Network-tracked associative swept surfaces (SWEEP) with path-relative base points, miter corner history, B-rep MASSPROP, and curved offset/fillets. (Contributed by @ramox81 and @HakanSeven12)
• Advanced Typography & Table Overrides: Fully compliant right-to-left (RTL) text rendering in MTEXT, exact bounding boxes for shaped/rotated text fields, and in-place table cell style overrides with automated formula updates. (Contributed by @ramox81)
• Dimension Style Independent Arrowheads (DIMBLK1/DIMBLK2): Supported independent arrowhead configurations for start and end leaders with real-time preview synchronization. (Contributed by @KarimJerbi)
• GPU Platform Routing & Hardware Info: Hardware-aware backend routing (Metal on macOS, OpenGL fallback for legacy hardware), hardware info in About dialog, and dedicated Graphics options tab. (Contributed by @KarimJerbi)

👉 View Full v2026.41 Release Notes

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[v2026.40 / v2026.40.1] - 2026-10-05 (v2026.40.1 replaced pulled v2026.40)

Summary: Major release for release week 2026.40 (replacing the pulled v2026.40 release). Introduces the interactive FIELD evaluation command and dialog, full ATTDEF attribute definition workflow parity, a redesigned tabbed Blocks palette with drag-and-drop insertion, multiscale pyramidal DeepZoom tiling & Set-of-Marks visual ID stamping for MCP vision tools, DWF/DGN and point cloud underlay support, dynamic input control (DYNMODE), script engine upgrades (.scr), TrueType embedded font PDF export, and smooth exponential zoom navigation. Incorporates immediate stability hotfixes for instant layer visibility toggling without CPU re-tessellation, 3D cylinder height input validation, load-time BLOCK/ENDBLK sentinel recovery, and MCP server request lifecycle & cancellation hardening.

🌟 Key Highlights

• Instant Layer Visibility Toggling: Toggle visibility states directly on GPU batches without triggering CPU re-tessellation passes. (Contributed by @HakanSeven12)
• FIELD Evaluation System & Dialog: Real-time text/MText field evaluation, table formulas, block placeholders, and plot-time updates. (Contributed by @ramox81)
• Attribute Definition (ATTDEF) Parity: Complete ATTDEF/-ATTDEF dialogs, tag visibility management, and ribbon integration. (Contributed by @ramox81)
• Blocks Palette Overhaul: Redesigned Blocks palette with categorized tabs (Current Drawing, Recent, Favorites) and drag-and-drop insertion. (Contributed by @ramox81)
• MCP Multiscale Pyramidal Tiling (DeepZoom): On-demand cached multi-resolution pyramid tiling protocol (manifest.json and tile/{level}/{x}/{y}) allowing LLM vision agents to inspect dense drawings without exceeding token budgets. (Contributed by @KarimJerbi)
• Set-of-Marks Visual Grounding & Vision ID Stamp: High-contrast numbered visual ID badge stamps on entity centroids in viewport captures with bidirectional grounding manifests mapping tags to handles and world bounds. (Contributed by @KarimJerbi)
• Visual Differential Streaming & Spatial CRS: Standardized WCS spatial metadata under _spatial and visual diff engine (compute_visual_diff) with dirty region cropping (diff_mode: crop). (Contributed by @KarimJerbi)
• Drawing Load Sentinel Recovery: Materialized missing BLOCK/ENDBLK sentinels on load, preventing crashes and corrupt database states. (Contributed by @KarimJerbi)
• PDF TrueType Font Embedding: Subset TrueType font embedding directly in vector PDF export. (Contributed by @Chrisyeh1983)

👉 View Full v2026.40 / v2026.40.1 Release Notes

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[v2026.39] - 2026-09-27

Summary: Milestone release featuring the initial Python Host Model plugin architecture, full dimensional and geometric parametric constraint parity (Linear, Aligned, Angular, Radial, Diameter), interactive Block Definition (BLOCK/BMAKE) and Write Block (WBLOCK) dialogs, command-line autocomplete execution on Enter, the XCLIP boundary clipping tool, redesigned PDF/XREF underlay integration panels, interactive plugin command previews, trackpad gesture navigation (pan and pinch-to-zoom), major rendering & tessellation performance optimizations, and robust metric drawing template defaults.

🌟 Key Highlights

• Block Definition (BLOCK/BMAKE) & WBLOCK Dialogs: Interactive block creation dialogs with on-screen sequencing, base point coordinate pickers, unit settings, and external file block export. (Contributed by @KarimJerbi)
• Command-Line Autocomplete & Architecture Modularization: Pressing Enter executes highlighted autocomplete suggestions immediately. Modularized monolithic 11.5k-line command driver into clean domain modules. (Contributed by @KarimJerbi)
• Python Host Model & Plugin Architecture: Foundational embedded Python runtime host with CAD entity data structures and automation APIs. (Contributed by @felixriestra)
• Parametric Constraints Parity: Complete geometric and dimensional constraint toolsets (Linear, Aligned, Angular, Radial, Diameter). (Contributed by @ramox81)
• Tessellation & Pipeline Performance: Optimized polyline arc tessellation sampling, bypassed wide fills on thin polylines, memoized constraint glyphs, and capped selection grips at 4096. (Contributed by @KarimJerbi)
• Boundary Clipping (XCLIP): Polygonal and rectangular clipping boundaries for external references and block inserts. (Contributed by @ramox81)
• Trackpad Navigation Gestures: Smooth two-finger panning and pinch-to-zoom gestures. (Contributed by @swit33)

👉 View Full v2026.39 Release Notes

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[v2026.38] - 2026-09-20

Summary: Massive foundational release bringing the geometric 2D constraint engine (Horizontal, Vertical, Concentric, Smooth, Symmetric, Equal, Fixed, Autoconstrain), complete External References (XREF) Manager overhaul, independent 3D object-snap engine with 22.7x tracking speedup, modernized DSETTINGS dialog, ALIASEDIT command alias manager, associative paper space viewport dimensions, 3Dconnexion SpaceMouse navigation on Windows, comprehensive Windows printing & CTB routing, context right-click menus, and 3D format fixes (STEP/OBJ).

🌟 Key Highlights

• External References (XREF) Manager Overhaul: Docked palette with tree/list views, resizable columns, status detection (loaded, unloaded, stale, orphaned), detach/reload/bind/path ops, and split toolbar. (Contributed by @KarimJerbi)
• Independent 3D Object Snap System & Performance: 3D OSNAP engine supporting 6 distinct modes, coupled with a 22.7x broadphase and tangent gating speedup in cursor snap tracking. (Contributed by @KarimJerbi)
• Drafting Settings (DSETTINGS) & ALIASEDIT Modernization: Modern tabbed DSETTINGS dialog with editable grid/snap spacing, and full shortcut-editor parity in ALIASEDIT. (Contributed by @KarimJerbi)
• Geometric Parametric Constraints Engine: 2D constraint engine with AUTOCONSTRAIN and the interactive CONSTRAINTBAR. (Contributed by @ramox81)
• Polyline Arc & Offset Grip Editing: Interactive radius grip editing for LWPOLYLINE arcs and parallel segment offset grips preserving connected geometry. (Contributed by @MarcelP102)
• Fusion Themes & UCS Face/Object Alignment: Fusion Black and Fusion White visual themes, interactive sketch mode, and direct UCS alignment to solid 3D faces (UCS FACE). (Contributed by @dasmatus)
• Associative Viewport Dimensions: Associative dimensioning in layout viewports dynamically tied to 3D model geometry. (Contributed by @HakanSeven12, @CiberNin, and @kevin9327)
• 3Dconnexion SpaceMouse Support: Native 6-DOF controller navigation support on Windows. (Contributed by @HakanSeven12)
• Windows Plotting & Printing Subsystem: Reliable DEVMODE queries, custom paper routing, and lenient CTB loading. (Contributed by @HakanSeven12 and @CiberNin)

👉 View Full v2026.38 Release Notes