HTML canvas miterLimitProperty

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Examples

Draw a line with a maximum miter length of 5:

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JavaScript:

var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.lineWidth=10;
ctx.lineJoin="miter";
ctx.miterLimit=5;
ctx.moveTo(20,20);
ctx.lineTo(50,27);
ctx.lineTo(20,34);
ctx.stroke();

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Browser Support

Internet ExplorerFirefoxOperaGoogle ChromeSafari

Internet Explorer 9, Firefox, Opera, Chrome, and Safari support the miterLimit property.

Note:Internet Explorer 8 and earlier versions do not support the <canvas> element.


Definition and Usage

The miterLimit property sets or returns the maximum miter length.

The miter length refers to the distance between the inner corner and the outer corner where two lines meet.

Miter Limit figure 1

Tip:The miterLimit property is only effective when the lineJoin property is "miter".

The smaller the corner angle, the greater the miter length.

To avoid the miter lengthbeing too long, we can use the miterLimit property.

If the miter length exceeds the value of miterLimit, the corner will be displayed in the "bevel" type of lineJoin (Fig 3):

Miter Limit figure 2
Default value: 10
JavaScript Syntax: context.miterLimit=number;

Property Values

Value Description
number A positive number. Specifies the maximum miter length. If the miter length exceeds the value of miterLimit, the corner will be displayed in the "bevel" type of lineJoin.


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