SiriWave

The "Apple Siri" wave replicated in pure Javascript using the Canvas API. To learn more about the project, read the blog post here, check the demo or codepen.

iOS (classic) style

The classic, pre-iOS9 style.

iOS9 style

The new fluorescent wave introduced in iOS9.

iOS13 style

work in progress

The wave reinvented as a bubble.

Usage

Browser (via CDN) usage

Import the UMD package via the unpkg CDN and it's ready to use.

<script src="https://unpkg.com/siriwave/dist/siriwave.umd.min.js"></script>

ES module

Install it through npm install siriwave or npm add siriwave first:

import SiriWave from "siriwave";

Initialize

Create a div container and instantiate a new SiriWave object:

<div id="siri-container"></div>
<script>
  var siriWave = new SiriWave({
    container: document.getElementById("siri-container"),
    width: 640,
    height: 200,
  });
</script>

Constructor options

Key	Type	Description	Default	Required
container	DOMElement	The DOM container where the DOM canvas element will be added.	null	yes
style	"ios", "ios9"	The style of the wave.	"ios"	no
ratio	Number	Ratio of the display to use. Calculated by default.	calculated	no
speed	Number	The speed of the animation.	0.2	no
amplitude	Number	The amplitude of the complete wave-form.	1	no
frequency	Number	The frequency of the complete wave-form. Only available in style "ios"	6	no
color	String	Color of the wave. Only available in style "ios"	"#fff"	no
cover	Bool	The canvas covers the entire width or height of the container	false	no
autostart	Bool	Decide wether start the animation on boot.	false	no
pixelDepth	Number	Number of step (in pixels) used when drawed on canvas.	0.02	no
lerpSpeed	Number	Lerp speed to interpolate properties.	0.01	no
curveDefinition	ICurveDefinition[]	Override definition of the curves, check above for more details.	null	no
ranges	IiOS9Ranges	Override the default random ranges of the curves.	null	no
globalCompositeOperation	GlobalCompositeOperation	globalCompositeOperation of the canvas, controls wave overlap design.	"lighter"	no

Ranges

Each wave chooses a random parameter for each of these ranges that factors into their creation. You can override these ranges by passing a ranges object to the constructor.

Here is the type of the ranges object:

export type IiOS9Ranges = {
  noOfCurves?: [number, number];
  amplitude?: [number, number];
  offset?: [number, number];
  width?: [number, number];
  speed?: [number, number];
  despawnTimeout?: [number, number];
};

API

new SiriWave

curveDefinition

By passing this argument, you're overriding the default curve definition resulting in a completely different style.

The default definition for the ios classic style is:

[
  { attenuation: -2, lineWidth: 1, opacity: 0.1 },
  { attenuation: -6, lineWidth: 1, opacity: 0.2 },
  { attenuation: 4, lineWidth: 1, opacity: 0.4 },
  { attenuation: 2, lineWidth: 1, opacity: 0.6 },
  { attenuation: 1, lineWidth: 1.5, opacity: 1 },
];

and it results in 5 different sin-waves with different parameters and amplitude.

You can set 4 attributes for each curve:

• attenuation: the power factor determining the attenuation
• lineWidth: the line width
• opacity: the opacity
• color: the color, default to SiriWave.color; optional

The ios9 style definition is instead:

[
  { color: "255,255,255", supportLine: true },
  { color: "15, 82, 169" }, // blue
  { color: "173, 57, 76" }, // red
  { color: "48, 220, 155" }, // green
];

and it results in 3 different colored waves + 1 support wave that needs to be there.

Here you set:

• supportLine: only one of these curves must have this to true, it will be used to draw the support line
• color: the color of the wave

start()

Start the animation

stop()

Stop the animation.

setSpeed(newValue)

Set the new value of speed (animated)

setAmplitude(value)

Set the new value of amplitude (animated)

dispose()

Stop the animation and destroy the canvas, by removing it from the DOM. Subsequent start() calls on this SiriWave instance will fail with an exception.

Grapher plots

• GCX default
• GCX iOS 9

Build and development

If you wanna make some modifications in your local environment, use:

npm dev

this will create a watchable build with RollupJS and automatically create a server to see your changes in the browser.

To finally build all targets:

npm build

QA

How do I integrate this library with a microphone user input?

You can find an excellent demo here by @semmel