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Fork of HakanSeven12/OpenCADStudio (GPL-3.0), patched for embedded job-scoped load/save integration with the CMMS.
1,189 commits 1 branch 0 tags 46 MiB
  • Rust 71.9%
  • Fluent 26.7%
  • WGSL 0.7%
  • Max 0.3%
  • HTML 0.1%
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Hakan Seven a994a148fe perf(render): batch solid meshes, fix per-pick freezes on heavy 3D models 
Opening / navigating a heavy 3D DWG (e.g. a BIM model with ~10k ACIS solids)
was effectively frozen. Several independent costs, all addressed here:

- Face3D edge/fill buffers were re-uploaded on every camera move (keyed on
  camera_generation). They are world-space and selection-independent, so gate
  them on (geometry_epoch, fill_mode) instead — a pan no longer re-walks every
  wire.
- Solid meshes were drawn one buffer + one draw call per solid (~10k draws/
  frame), which strangled the GPU front end. Concatenate every solid's LOD0
  into a few large buffers (split only to stay under the 256 MB buffer cap) and
  draw the whole set in a handful of calls. Built once per geometry epoch, so
  selection / hover never re-pack it.
- Selection / hover highlight is now a small tinted overlay of just the picked
  solids, drawn last with an Always-depth pipeline so it shows on top even when
  the solid is occluded — instead of re-tinting and re-uploading all meshes.
- Hover / pick hit-testing scanned every triangle of every solid each move
  (seconds on a heavy model). Add a 3D-AABB screen-rect broad phase
  (MeshLodSet now carries z_aabb) and reuse the renderer's cached expanded mesh
  set, so picking is O(solids) cheap projections plus the few solids actually
  under the cursor.
- Block-internal hatch hit-testing exploded every INSERT on every hover.
  Cache the result per geometry epoch and skip blocks that contain no hatch.
- Curved-surface (cone/sphere/torus) tessellation tolerance is now radius-
  relative (CURVE_REL_TOL) so a cylinder's facet count is size-independent and
  matches the circle/arc wire tessellation, instead of exploding on large radii.

Also adds docs/tessellation.md mapping every EntityType to its tessellation
path (truck B-rep vs truck curve topology vs direct).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-30 22:46:29 +03:00
.cargo fix(text): address PR #180 review 2026-06-26 00:27:40 +03:00
.claude feat: add local settings for Bash permissions 2026-04-30 10:01:17 +03:00
.github ci: distinguish the web Pages run name (… Web) 2026-06-17 01:52:19 +03:00
assets feat(view): zoom-window ribbon button and bare ZOOM command 2026-06-28 16:57:00 +03:00
crates fix(plugin): bound the runner handshake read with a deadline 2026-06-28 10:41:01 +03:00
docs perf(render): batch solid meshes, fix per-pick freezes on heavy 3D models 2026-06-30 22:46:29 +03:00
packaging feat(packaging): desktop shortcut, icon-cache refresh, checksums, AppStream 2026-06-16 04:27:46 +03:00
plugins Update registry.json 2026-06-23 00:22:08 +03:00
src perf(render): batch solid meshes, fix per-pick freezes on heavy 3D models 2026-06-30 22:46:29 +03:00
tests fix(block-cache): address PR211 review follow-ups 2026-06-28 21:57:51 +03:00
web/fonts feat(web): lazy per-script font loading for international CAD text 2026-06-20 16:13:26 +03:00
.gitignore chore: ignore .claude/launch.json (local preview config) 2026-06-18 13:36:35 +03:00
build.rs refactor: replace build.rs module codegen with a static registry 2026-06-26 23:19:20 +03:00
Cargo.lock chore(deps): bump acadrust for AcDs SAB scan perf fix (#203) 2026-06-30 18:51:50 +03:00
Cargo.toml chore(release): bump to 0.7.0 2026-06-29 16:48:15 +03:00
COMMANDS.md feat(commands): add FLATSHOT and CONVTOSURFACE 2026-06-29 09:16:44 +03:00
HEADER_AUDIT.md feat: add HeaderVariables audit documentation 2026-05-20 05:57:16 +03:00
index.html feat(web): lazy per-script font loading for international CAD text 2026-06-20 16:13:26 +03:00
LICENSE Initial commit 2026-03-22 14:53:51 +03:00
README.md Update README.md 2026-06-17 02:14:56 +03:00
STATUSBAR.md docs: add status bar items roadmap 2026-06-05 00:14:41 +03:00
Trunk.toml fix(wasm): make the web build actually run in the browser 2026-06-16 17:53:56 +03:00

README.md

Open CAD Studio

OCS is a CAD application for 2D drafting and 3D modeling, built with Rust. Reads and writes DWG and DXF files natively. Also has a web version now!

OCS Web try it in the browser: https://hakanseven12.github.io/OpenCADStudio/

resim resim2

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 DIMSTYLE support (DIMASZ, DIMSCALE, DIMEXO, DIMEXE, and more)
  • Text: MTEXT, TEXT, DTEXT with font browser (STYLE DIALOG)
  • Leaders: MLEADER with straight and spline path types; MLEADERSTYLE manager
  • Tolerances: GD&T feature control frames
  • Tables: TABLE entity render; TABLESTYLE manager
  • MLine: MLINE entity with MLSTYLE manager and EXPLODE support

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 manager
  • PLOTSTYLEPANEL / STYLESMANAGER — plot style table editor (CTB/STB)
  • PRINT — send layout to system printer

Blocks & References

  • INSERT with attribute prompting (ATTREQ)
  • ATTEDIT — edit block attribute values interactively
  • REFEDIT / REFCLOSE — in-place block reference editing
  • XREF — attach, reload, and resolve external DWG/DXF references
  • DATAEXTRACTION — 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 (IMAGE command)
  • 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 switching
  • SHORTCUTS — keyboard shortcuts panel
  • SPLINEDIT — 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)

Apple Silicon (M-series) only; Intel macOS isn't built. The app is ad-hoc signed but not Apple-notarised (notarisation requires a paid Apple Developer ID), so macOS Gatekeeper guards the first launch. Pick whichever path is easiest:

Option A — Homebrew (recommended):

brew install --cask --no-quarantine \
  https://raw.githubusercontent.com/HakanSeven12/OpenCADStudio/main/packaging/homebrew/open-cad-studio.rb

--no-quarantine lets Gatekeeper skip the unsigned-app prompt. See packaging/homebrew/ for publishing this as a brew tap.

Option B — manual .dmg:

Download OpenCADStudio-*-macos-arm64.dmg from the latest release, open it, and drag OpenCADStudio.app to /Applications. If the first launch is blocked, clear the quarantine flag once:

xattr -dr com.apple.quarantine /Applications/OpenCADStudio.app

On older macOS you can instead right-click OpenCADStudio.app → Open and confirm; on macOS Ventura and later, approve it via System Settings → Privacy & Security → Open Anyway.

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