High scalability. Users can freely organize content structures in a non-linear fashion. Zooming. Emulates the "zoom in" to get an overview and "zoom out" to observe details as in the real world.

核心架构请查阅 canvas-select 组件，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、圆形标注、网格标注。 使用离屏 canvas 绘制静态背景图片，避免频繁绘制。 避免浮点数运算，使用 Math.round()或 Math.floor()进行取整。

Explore the world of textured and layered abstract art with this step-by-step tutorial showcasing three innovative projects. Learn how to use modeling paste, acrylic paints, and stencils to create ...