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。

Apple today released a new update for Safari Technology Preview, the experimental browser that was first introduced in March ...

HTML has supported multimedia elements—images, video, audio—for many decades, but the latter two required browser plugins ...

Safari Technology Preview 235 版本包含了针对 CSS、Canvas、剪贴板、HTML、JavaScript 以及 MathML 等核心技术的修正与优化。 此外，该版本也对媒体处理、网络功能、转译表现、Web ...

The Frist Art Museum presents The Impressionist Revolution: Monet to Matisse from the Dallas Museum of Art, an exhibition ...

If you feel like you aren't managing your tablet time to the best of your abilities, there are apps that can help with that.

Security camera footage shows Maria climbing into the hammock for a nap, with Gabriel joining her carrying a case of felt-tip ...

Like all AI models based on the Transformer architecture, the large language models (LLMs) that underpin today’s coding ...

Yerba Buena Illuminated builds on the success of the annual Christmastime extravaganza Let's Glow San Francisco.

你是一名代码大师，帮我制作一款魔法学院主题的打字防御游戏，玩家在缀满星光与流转符文的深紫夜空下，通过准确输入“咒语代码”来净化不断下落的混沌符文。游戏提供从单字符（如f/c/h）、短咒语（短单词）到完整法术卷轴（长单词）的三种研习阶段，并采用Canv ...

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