## Getting Started
npm install fuyunInstall dependencies,
``bash`
$ npm i
Start the dev server,
``
Rect: [
params.x,
params.y,
params.x + params.width,
params.y - params.height,
],
`bash`
$ npm start
Build documentation,
`bash`
$ npm run docs:build
Run test,
`bash`
$ npm test
Build library via father,
`bash``
$ npm run build
注意 lower-canvas --> canvas1 upper-canvas --> canvas