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warpspeed

v2.0.6

Published

An animated HTML5 canvas with a warpspeed/star field effect. Good for backgrounds I guess.

Downloads

12

Readme

warp-speed

A small NPM package that can be used to grab a HTML5 canvas running a star wars style warp speed animation.

Example - setting this as the background of some element

import { getWarpSpeedController } from 'warpspeed';

function chewiePunchIt() {
  const warpSpeedController = getWarpSpeedController();
  const someContainer = document.querySelector('#someContainerId');
  warpSpeed.mountCanvasTo(someContainer); // Renders in as a plain black canvas with no animation
  warpSpeed.render(); // Kicks off the animation

  // You can then...

  // Change the number of stars being rendered:
  warpSpeedController.setNumberOfStars(2000); // Default is 7500

  // Change the color of the stars:
  warpSpeedController.setStarColor('rgb(255, 0, 0)'); // Default and my favourite is 'rainbow'
  // Note: Colour must be a valid CSS colour string, 'rainbow' is the only exception here

  // Change the size of the stars:
  warpSpeedController.setStarRadii(5); // Default is 3

  // Change the speed of the stars:
  warpSpeedController.setStarVelocities(50); // Default is 3 (50 makes me feel a bit motion sick)

  /* All of the above parameters can be passed as parameters when calling getWarpSpeedController but are optional */

  // And finally, you can remove the canvas from the DOM:
  warpSpeedController.dismountCanvas();
}

Side notes on usage:

I've given the canvas some inline style so that it has a black background and fills the element it is mounted to, but feel free to add your own styles, it has an ID of 'warpSpeedCanvas'. On mounting of the canvas and on page resize, the canvas will automatically set its width and height properties to match it's clientWidth / clientHeight, meaning the resolution should always look just fine. It will also restart the drawing process on resize so that the animation always fills the current resolution.