Files
Aislo/B07_DesignDetail/openwebcad
eomsangdonandClaude Opus 5.5 edd51b66e9 fix(B07): 이동 · 크기 · 회전 · 복사 · 배열 때 색 · 층 유지 · 호 대칭 축 · 시계방향 호 내보내기(84-3)
- 복제 함수 cloneKeepingLook 한 곳(move-tool.helpers) — 옮기기 · 크기 · 회전은 id · 묶음까지 그대로 · 복사 · 배열은 새 id
- LineEntity · ArcEntity clone 이 색 · 층 · 선 꼴 유지(폴리선 자식 포함)
- 복사가 누를 때마다 원본을 한 벌씩 더 쌓던 흠 고침
- ArcEntity mirror 가 축 각도 따름(α → 2θ − α) · 그리기 끝각 = 시작각 ± 쓸어간 각(끝각 0 → 2π 온 원 흠)
- DXF 내보내기 시계방향 호는 시작 · 끝 바꿔 같은 작은 호
- 시험: ArcEntity.test.ts 10 · resources/tester/cad/clone-keeps-look.test.ts 7

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UoSr2sqvYtBf1dtQdus88s
2026-10-08 12:08:03 +09:00
..

Aislo B08 2D Drawing

This directory is maintained as part of the Aislo project and is not connected to an upstream Git repository. It provides the independent browser-based 2D drawing workspace used only by the B08 page.

The drawing engine is based on OpenWebCAD by Bert Verhelst and retains its MIT license notice in LICENSE.md and public/THIRD_PARTY_LICENSES.txt.

Aislo integration boundary

  • Business drawings enter the iframe only as same-origin JSON messages with type aislo:b08:load-drawing.
  • Browser-side DXF/DWG parsing is intentionally excluded.
  • DXF, DWG and PDF input/output are separate future modules and require a new dependency-license review before implementation.

Original project description

This is a React-based canvas drawing application that allows users to draw various shapes, such as lines, rectangles, and circles, on a fullscreen canvas. The application also includes features for selecting and erasing shapes, as well as exporting the drawing as an SVG file.

demo.gif

DEMO: https://bertyhell.github.io/openwebcad

Features

  • Fullscreen canvas with a black background
  • Drawing tools: Line, Rectangle, Circle, measurements
  • Zoom and pan
  • Eraser tool to delete segments
  • Undo and redo
  • Choose angle guides
  • Draw with snap points for
    • endpoints
    • midpoints
    • intersections
    • circle centers
    • circle quadrants
  • Selection tool to highlight and modify shapes
    • Use CTRL to toggle selection
    • Use shift to add to the current selection
    • drag left, to select by intersecting
    • drag right, to select by containing
  • Move
  • Rotate
  • Scale
  • Align shapes to each other
  • Array copy linear
  • Array copy radial
  • Import images into the drawing
  • Import SVG files
  • Export to PDF
  • Export drawing as an SVG file
  • Export drawing as an PNG file
  • Save and load drawings from/to json files
  • Select line color and thickness
  • Eraser tool to delete segments

Possible future feature ideas (TODO) in order of likelihood

  • Eraser tool to delete segments
    • Max distance to delete
  • Layers for drawing shapes in different layers that can be toggled on or off
  • Mirror
  • Offset
  • Add text
  • Ellipses
  • Regular polygons (pentagon, hexagon, etc)
  • Combine lines into a polygon
  • Explode polygons into lines
  • Polygon circumference
  • Polygon area
  • Chamfer, Round corners
  • Draw with snap points for
    • circle tangents
    • nearest point on line
    • prioritize certain snap points over others (eg: midpoint over nearest)
  • Edit existing lines and circles by dragging endpoints/middle points
  • Hatching and fill areas
  • gradient fills
  • Import DXF files
  • Import DWG files
  • Export to DWG
  • Export to DXF
  • Export drawing to ASCII code

Maintenance

  • replace react with webcomponents (Lit)

Technologies Used

  • TypeScript
  • JavaScript
  • React
  • NPM
  • HTML canvas
  • SVG
  • SCSS
  • Tailwind CSS

Demo

Visit https://bertyhell.github.io/openwebcad

Installation

  1. Clone the repository:

    git clone <repository-url>
    cd <repository-directory>
    
  2. Install dependencies:

    npm install
    

Usage

Start the development server: sh npm dev

Open your browser and navigate to http://localhost:5173

Development

Available Scripts

  • npm dev: Runs the app in development mode.
  • npm run build: Builds the app for production.
  • npm preview: Runs the production build in a local server.

Project Structure

  • src/: Contains the source code of the application.
  • docs/: Contains the github pages site.
  • public/: Contains assets that need to be accessible from the url. Like favicon.

Contributing

Contributions are welcome! Please open an issue or submit a pull request for any changes.

License

This project is licensed under the MIT License.