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HTML5 canvas scale Method
HTML5 canvas referenceExample
Draw a small rectangle, scale five times, and draw the same rectangle again:
JavaScript:
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.strokeRect(5,5,25,15);
ctx.scale(5,5);
ctx.strokeRect(5,5,25,15);
var ctx=c.getContext("2d");
ctx.strokeRect(5,5,25,15);
ctx.scale(5,5);
ctx.strokeRect(5,5,25,15);
Try it yourself »
Definition and Usage
The scale method scales the drawings, bigger or smaller.
You can scale the width or the height or both, by using the two parameters
If you scale both width and height two times (2,2) all drawings, from now on, will be twice as wide and twice as high as you specify
Also, the positioning will be scaled. If you scale (2,2), drawings will be positioned twice as far from the left, and top, of the canvas.
| JavaScript syntax: | context.scale(x,y); |
|---|
Browser Support
The scale method is supported in all major browsers.
Parameter Values
| Parameter | Values | Description | Play it |
|---|---|---|---|
| x | width | The scaling of the the width. 1= no scaling, 0.5= half the size,2= twice the size etc. | Play it » |
| y | height | The scaling of the the height. 1= no scaling, 0.5= half the size,2= twice the size etc. | 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.