forked from 1b-agent/opencadstudio-upstream
Hakan SevenandClaude Opus 4.7
a058ded74f
A multi-pane Model view (split / VPORTS 2H|2V|4) used to collapse back to a single tile after save→reopen — only the *Active VPort entry was written, the rest of model_tiles was discarded. Each ModelTile now round-trips through a dedicated `*OCS_Tile_<i>` entry in the VPort table: - save_model_tiles_to_vports stashes the live camera into the active tile, removes any previous tile entries, and writes one VPort per tile (rect via lower_left/upper_right, camera via view_target/direction/height); the active tile is mirrored to `*Active` so apps that only read that entry still get a sensible view. - restore_model_tiles_from_vports rebuilds the tile list on file open and selects the active tile by matching the entry whose view_target equals `*Active`'s, falling back to index 0. Single-tile configurations and files from other apps skip the tile entries entirely — restore returns false and the existing *Active / View-table path runs, so behaviour for non-tiled files is unchanged. Co-Authored-By: Claude Opus 4.7 <[email protected]>
Open CAD Studio
A CAD application for 2D drafting and 3D modeling, built with Rust. Reads and writes DWG and DXF files natively.
Features
File Formats
- DWG read/write (R13 through R2018)
- DXF read/write (R13 through R2018)
- STL export (
STLOUT/EXPORTSTL) - STEP AP203 export (
STEPOUT) - OBJ import (
IMPORTOBJ) - PDF export (plot layouts to PDF)
- WBLOCK — write selected entities or a block to an external file
- XREF — attach, reload, and auto-resolve external references
2D Drafting
| Command | Description |
|---|---|
LINE, PLINE, RECTANG, POLYGON |
Basic geometry |
CIRCLE, ARC, ELLIPSE, SPLINE |
Curves |
HATCH, HATCHEDIT |
Hatch fills with pattern, scale, angle editing |
OFFSET, TRIM, EXTEND, FILLET |
Modify geometry (supports lines, arcs, ellipses, polylines, splines) |
BREAK, STRETCH, LENGTHEN |
Shape editing |
ARRAY, MIRROR, MOVE, COPY, ROTATE, SCALE |
Transformations |
EXPLODE |
Explode blocks, dimensions, polylines, mlines |
DDEDIT |
Double-click text editing |
MASSPROP |
Area, perimeter, centroid of selected entities |
3D Modeling
| Command | Description |
|---|---|
BOX, SPHERE, CYLINDER |
Solid primitives |
EXTRUDE, REVOLVE |
Profile-based solids |
LOFT |
Ruled-surface loft through cross-sections |
SWEEP |
Sweep a profile along a path |
ARRAY3D |
3D array |
| ACIS tessellation | Renders 3DSOLID, REGION, and BODY entities |
Annotations & Dimensions
- Dimensions: Linear, Aligned, Angular, Radial, Diameter, Ordinate — with full
DIMSTYLEsupport (DIMASZ,DIMSCALE,DIMEXO,DIMEXE, and more) - Text:
MTEXT,TEXT,DTEXTwith font browser (STYLE DIALOG) - Leaders:
MLEADERwith straight and spline path types;MLEADERSTYLEmanager - Tolerances: GD&T feature control frames
- Tables:
TABLEentity render;TABLESTYLEmanager - MLine:
MLINEentity withMLSTYLEmanager andEXPLODEsupport
Paper Space & Layouts
- Multi-tab layout system with model space and unlimited paper space tabs
- Viewport projection: Model content correctly projected into paper-space viewport rectangles
- Camera persistence: View position and zoom saved per layout; restored on file open and tab switch
- Correct paper size: Physical paper dimensions read from embedded PlotSettings (not drawing limits)
- Inline MSPACE overlay — enter a viewport with double-click; edit model entities in place
VPORTS— preset viewport configurations (single, 2H, 2V, 4-way)LAYOUTMANAGER/LAYOUTPANEL— GUI layout managerPLOTSTYLEPANEL/STYLESMANAGER— plot style table editor (CTB/STB)PRINT— send layout to system printer
Blocks & References
INSERTwith attribute prompting (ATTREQ)ATTEDIT— edit block attribute values interactivelyREFEDIT/REFCLOSE— in-place block reference editingXREF— attach, reload, and resolve external DWG/DXF referencesDATAEXTRACTION— export entity property data to CSV
Snapping & Precision
- Object snaps: Endpoint, Midpoint, Center, Node, Quadrant, Intersection, Perpendicular, Tangent, Nearest, Insertion, and more
- Ellipse arc endpoints, LWPolyline arc midpoints, Hatch boundary points
- Object Snap Tracking (
OTRACK/F11) - Polar Tracking with configurable angle increment
- Dynamic Input overlay (
DYNMODE/F12) - Grid snap with adaptive spacing
- Command history navigation (↑ / ↓)
Rendering
- GPU-accelerated via WebGPU (wgpu)
- 4× MSAA anti-aliasing
- Orthographic and perspective camera
- ViewCube with face/edge/corner snapping
- Wide polylines: LWPolyline and Polyline2D filled strokes
- Raster images: GPU-textured quad pipeline (
IMAGEcommand) - Wipeout: Solid fill masking
- Complex linetypes: Text and shape elements rendered in linetype patterns
- White/black entity colors adapt to background luminance
- Per-viewport background color (
BACKGROUND) - Visual style selector (Wireframe, Shaded, etc.)
- X-ray ghost pass for selected wires occluded by geometry
UI
- Modular ribbon interface — Home, Insert, Annotate, View, Manage, Layout
- Command line with autocomplete and history
- Layer Manager with per-viewport freeze columns
- Properties panel
COLORSCHEME— runtime theme switchingSHORTCUTS— keyboard shortcuts panelSPLINEDIT— close, open, reverse spline control points- UCS icon with 3D foreshortening and axis labels
Installation
Linux (AppImage)
Download OpenCADStudio-*-linux-x86_64.AppImage from the latest release, then:
chmod +x OpenCADStudio-*-linux-x86_64.AppImage
./OpenCADStudio-*-linux-x86_64.AppImage
No installation required — runs directly on any modern Linux distribution.
Windows
Download OpenCADStudio-*-windows-x86_64.exe from the latest release and run it directly. Windows SmartScreen may show "Windows protected your PC" because the binary is not yet code-signed — click More info → Run anyway.
macOS (Apple Silicon)
Download OpenCADStudio-*-macos-arm64.dmg from the latest release — Apple Silicon (M-series) only; Intel macOS isn't built.
Open the .dmg and drag OpenCADStudio.app to /Applications. The first launch may be blocked by Gatekeeper because the app is not notarised — right-click OpenCADStudio.app → Open and confirm, or run once via xattr -dr com.apple.quarantine /Applications/OpenCADStudio.app.
Build from Source
Requirements: Rust 1.75+
git clone https://github.com/HakanSeven12/OpenCADStudio.git
cd OpenCADStudio
cargo build --release --bin OpenCADStudio
./target/release/OpenCADStudio
License
GPL-3.0-only — see LICENSE