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HTML5 canvas rotate Method
HTML5 canvas referenceExample
Rotate a rectangle 20 degrees:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.rotate(20*Math.PI/180);
ctx.fillRect(50,50,100,50);
var ctx=c.getContext("2d");
ctx.rotate(20*Math.PI/180);
ctx.fillRect(50,50,100,50);
Try it yourself »
Definition and Usage
The rotate method rotates the canvas.
The rotation is done in an angle from the canvas' position 0,0:
The rotate method takes one parameter, radians.
The parameter decides the degree of the rotation by using radians.
To calculate from degrees to radians, use this formula: degrees*PI/180
20 degrees: 20*PI/180=0.35
The rotation will only affect drawings made AFTER the rotation is done.
| JavaScript syntax: | context.rotate(angle); |
|---|
Browser Support
The rotate method is supported in all major browsers.
Parameter Values
| Parameter | Values | Description | Play it |
|---|---|---|---|
| angle | angle | Rotates the canvas to the given angle | Play it » |
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Copyright 1999-2012 by Refsnes Data. All Rights Reserved.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
While using this site, you agree to have read and accepted our terms of use and privacy policy.
Copyright 1999-2012 by Refsnes Data. All Rights Reserved.