The WEAS package is a JavaScript library designed to visualize and edit atomic structures (molecule, crystal, nanoparticle) in the web environments.

Features:

• Model: space-filling, ball-stick, polyhedral.
• Supported File types: CIF, XYZ, cube.
• Edit structure: move, rotate, delete, and replace atoms.
• Support periodic boundary conditions.
• Animation (view and edit).
• Volumetric data (isosurface).
• Vector fields, e.g., magnetic moment.

Here are some demo pages:

• Codepen Demo
• ...

Please visit: WEAS Documentation

Clone the repository,

npm install
npm start

Then go to the demo site.

npm install
npm test

Use playwright for the e2e test.

For the first time, one needs to install the dependence.

npx playwright install

Then run

npm run build
npx playwright test

Run the test with the title

npx playwright test -g "Animation"

If the snapshots need to be updated:

npx playwright test --update-snapshots

• Xing Wang [email protected]