css-box-model
Get accurate and well named css box model information about an Element 📦
spase
Micro library for performing 2D spatial calculations of DOM elements
pex-geom
Geometry intersection and bounding volume helpers for PEX.
canvas-select
一个用于图片标注的javascript库,基于canvas,简单轻量,支持矩形、多边形、点、折线、圆形、网格。