CanvasPattern: setTransform() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers.

The CanvasPattern.setTransform() method uses a DOMMatrix object as the pattern's transformation matrix and invokes it on the pattern.

Syntax

js
setTransform(matrix)

Parameters

matrix

A DOMMatrix to use as the pattern's transformation matrix.

Return value

None (undefined).

Examples

Using the setTransform method

This is just a simple code snippet which uses the setTransform method to create a CanvasPattern with the specified pattern transformation from a DOMMatrix. The pattern gets applied if you set it as the current fillStyle and gets drawn onto the canvas when using the fillRect() method, for example.

HTML

html
<canvas id="canvas"></canvas>

JavaScript

js
const canvas = document.getElementById("canvas");
const ctx = canvas.getContext("2d");

const matrix = new DOMMatrix([1, 0.2, 0.8, 1, 0, 0]);

const img = new Image();
img.src = "canvas_create_pattern.png";

img.onload = () => {
  const pattern = ctx.createPattern(img, "repeat");
  pattern.setTransform(matrix.rotate(-45).scale(1.5));
  ctx.fillStyle = pattern;
  ctx.fillRect(0, 0, 400, 400);
};

Editable demo

Here's an editable demo of the code snippet above. Try changing the argument to SetTransform() to see the effect it had.

Specifications

Specification
HTML
# dom-canvaspattern-settransform-dev

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
setTransform
Accepts a DOMMatrix2DInit-like object parameter

Legend

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Full support
Full support

See also