canvas

• Canvas API
• OffscreenCanvas
  • Chrome 69+
• window.createImageBitmap
  • ImageBitmap
• context
  • 2d - 绘制 2D 图形
  • bitmaprenderer - 绘制位图
  • webgl - 基于 OpenGL ES 2.0 的 3D 绘制
  • webgl2 - 基于 OpenGL ES 3.0 的 3D 绘制
  • webgpu - 基于 WebGPU 的 3D 绘制

type CanvasImageSource =
  | HTMLOrSVGImageElement
  | HTMLVideoElement
  | HTMLCanvasElement
  | ImageBitmap
  | OffscreenCanvas
  | VideoFrame;
type ImageBitmapSource = CanvasImageSource | Blob | ImageData;

NodeJS

• Automattic/node-canvas
  • MIT, JS, C++
  • Cairo backed Canvas implementation for NodeJS.
  • 支持平台
    • macOS x86/64
    • macOS aarch64 (aka Apple silicon)
    • Linux x86/64 (glibc only)
    • Windows x86/64
• canvas_binary_host
• https://github.com/Automattic/node-canvas/releases/download/v3.1.0/canvas-v3.1.0-napi-v7-darwin-x64.tar.gz

# AlpineLinux
apk add pkgconf cairo-dev pango-dev libpng-dev jpeg-dev giflib-dev librsvg-dev

# macOS
# https://github.com/Automattic/node-canvas/issues/2036
brew install pkg-config cairo pango libpng jpeg giflib librsvg pixman python-setuptools