CanvasRenderingContext2D.miterLimit - Web APIs 编辑

The CanvasRenderingContext2D.miterLimit property of the Canvas 2D API sets the miter limit ratio.

For more info about miters, see Applying styles and color in the Canvas tutorial.

Syntax

ctx.miterLimit = value;

Options

value

A number specifying the miter limit ratio, in coordinate space units. Zero, negative, Infinity, and NaN values are ignored. The default value is 10.0.

Examples

Using the miterLimit property

See the chapter Applying styles and color in the Canvas tutorial for more information.

Playable code

<canvas id="canvas" width="400" height="200" class="playable-canvas"></canvas>
<div class="playable-buttons">
  <input id="edit" type="button" value="Edit" />
  <input id="reset" type="button" value="Reset" />
</div>
<textarea id="code" class="playable-code">
ctx.beginPath();
ctx.moveTo(0,0);
ctx.lineWidth = 15;
ctx.lineTo(100, 100);
ctx.stroke();</textarea>

var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var textarea = document.getElementById("code");
var reset = document.getElementById("reset");
var edit = document.getElementById("edit");
var code = textarea.value;

function drawCanvas() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  eval(textarea.value);
}

reset.addEventListener("click", function() {
  textarea.value = code;
  drawCanvas();
});

edit.addEventListener("click", function() {
  textarea.focus();
})

textarea.addEventListener("input", drawCanvas);
window.addEventListener("load", drawCanvas);

Screenshot	Live sample

Specifications

Browser compatibility

BCD tables only load in the browser

WebKit/Blink-specific notes

• In WebKit- and Blink-based Browsers, a non-standard and deprecated method ctx.setMiterLimit() is implemented in addition to this property.

Gecko-specific notes

• Starting Gecko 2.0 (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1), setting miterLimit to a negative value no longer throws an exception; instead, it properly ignores non-positive values.

See also

• The interface defining this property: CanvasRenderingContext2D
• CanvasRenderingContext2D.lineCap
• CanvasRenderingContext2D.lineJoin