The CanvasRenderingContext2D
.setTransform()
method of the Canvas 2D API resets (overrides) the current transformation to the identity matrix and then invokes a transformation described by the arguments of this method.
See also the transform()
method, which does not override the current transform matrix and multiplies it with a given one.
Syntax
void ctx.setTransform(a, b, c, d, e, f);
The transformation matrix is described by:
Parameters
a (m11)
- Horizontal scaling.
b (m12)
- Horizontal skewing.
c (m21)
- Vertical skewing.
d (m22)
- Vertical scaling.
e (dx)
- Horizontal moving.
f (dy)
- Vertical moving.
Examples
Using the setTransform
method
This is just a simple code snippet which uses the setTransform
method.
HTML
<canvas id="canvas"></canvas>
JavaScript
var canvas = document.getElementById('canvas'); var ctx = canvas.getContext('2d'); ctx.setTransform(1, 1, 0, 1, 0, 0); ctx.fillRect(0, 0, 100, 100);
Edit the code below and see your changes update live in the canvas:
Specifications
Specification | Status | Comment |
---|---|---|
WHATWG HTML Living Standard The definition of 'CanvasRenderingContext2D.setTransform' in that specification. |
Living Standard |
Browser compatibility
Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
See also
- The interface defining it,
CanvasRenderingContext2D
CanvasRenderingContext2D.transform()