- LINE: 「첫 번째 점 지정」 빈 Enter = 마지막 끝점에서 이음 · U = 마지막 토막(되돌림 한 칸) · 둘째 토막부터 C · Enter · Esc = 끝(토막 남음) - PLINE(새 pline-tool): 호(A) 접선 호 · 길이(L) · 닫기(C · 호 모드 CL) · 명령 취소(U) · 선(L) · Esc · Enter = 그린 데까지 남김 - RECTANG: 치수(D) 길이 · 폭 기억(RECT.L · RECT.W) → 누른 쪽 사분면 · 없는 옵션 안내 - CIRCLE: 3P · 2P · 지름(D) <2r> · 반지름 기억(CIRCLERAD · 처음 <> 없음) · 한 번 뒤 끝 - POLYGON(새 polygon-tool): 변 수 기억 <4> · 3~1024 정수 · 모서리(E) · 내접/외접 기억 · 숫자 = 아래 변 수평 - ARC(새 arc-tool): 세 점 · 중심(C) · 각도(A) · 끝(E) · 반지름(R) - ELLIPSE(새 ellipse-tool): 축 두 끝 · 중심(C) · 회전(R) · 다른 축 숫자 = 중심에서 반 길이(N10) - SPLINE: 다음 점 입력 · U · 넷째 점부터 C · Esc 버림 · DONUT 중심 되풀이(loopFrom) - 시험 draw-acad 22 · keyboard-chain 옛 선 · 폴리선 줄 두 곳 새 동작으로 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01VmC34fsxxbweEG3RUjs3Mn
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: 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
-
Clone the repository:
git clone <repository-url> cd <repository-directory> -
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.
