sketch-wrapper

Helpers for creative coding sketches with HTML5 Canvas. It is heavily inspired by canvas-sketch. Many of the props and settings are compatible.

⚠️ This module is in a very early stage of development, and there may be unexpected bugs.

Install

npm i @daeinc/sketch-wrapper

Features

• TypeScript: It can work both in JavaScript or TypeScript projects.
• Multiple sketch modes: It supports vanilla Canvas 2D API, WebGL context, or use with other Canvas libraries (Three.js, OGL, Two.js, Pts.js) as long as they support an existing canvas and context. (p5.js instance mode is not supported in the current version)
• Animation loop: It has playhead prop that repeats 0..1 and makes it easy to create a seamless animation loop. Other props such as time, deltaTime are provided as well. You can also adjust frame rate for both playing and recording.
• Sketch settings: Use settings object to reduce boilerplate code in your sketch - set up animation duration, playback frame rate, filename, etc.
• Sketch props: Use props for each mode to help your coding.
• File exports: Export canvas as image, animated GIF or WebM video at various frame rates using keyboard shortcuts.

Motivation

In 2022, I started using canvas-sketch for all my creative coding sketches, and it was wonderful and met most of my needs. However, there were a few features that I wish it had. First was external ESM support. Due to the bundler it was using, I could not import the latest packages that I liked such as pts or thi.ng/umbrella. Another was TypeScript. I've only used TS for a few months, but it quickly became a very essential tool in my workflow. So, I thought maybe I'd make my own tool. Sketch-wraper is incomplete and a work-in-progress but it's been a great learning experience personally. If it can find some use in your sketches, that would be great, too.

How to use

Documentation is updated for v0.13.0

• Basic
• Sketch Settings
• Sketch Props
• Sketch (Rendering) Modes
• and more in the the documentation

Example Usage

The module supports both JavaScript and TypeScript.

• 👉 If you are not familiar with NPM, ESM or bundler setup, Check out a quick starter repository, sketch-wrapper-starter-js.
• 👉 There is also a starter for TypeScript projects.
• 👉 If you want to see more examples on how to use each mode and feature, check out sketch-wrapper-examples.

import sketchWrapper from "@daeinc/sketch-wrapper";

const sketch = ({ canvas, width, height }) => {
  // any setup code
  const bgFill = `#999`;
  const circleFill = `#333`;

  // render loop
  return ({ context: ctx, width, height, playhead }) => {
    ctx.fillStyle = bgFill;
    ctx.fillRect(0, 0, width, height);

    const d = Math.sin(playhead * Math.PI * 2) * 50;

    ctx.beginPath();
    ctx.arc(width / 2, height / 2, width / 4 + d, 0, Math.PI * 2);
    ctx.fillStyle = circleFill;
    ctx.fill();
  };
};

const settings = {
  title: "Sketch Wrapper Demo",
  background: "#333",
  dimensions: [600, 600],
  pixelRatio: window.devicePixelRatio,
  animate: true,
  duration: 4000,
  suffix: "-demo",
};

sketchWrapper(sketch, settings);

References

• canvas-sketch
• fragment

License

MIT