In this tutorial, we will set the position of a triangle using FabricJS. The top property allows us to manipulate the position of an object. By default, the top position is relative to the object's top.
Syntax
new Fabric.Triangle({ top: Number }: Object)< /pre><h2 id="Parameters">Parameters</h2><ul class="list"><li><p><strong> Options</strong><strong> (Optional)</strongphpcngtphp cn - This parameter is an <em>Object</em> which provides additional customization to our triangle. Using this parameter, you can change the color, cursor, stroke width and other properties related to the object with <em>top</em> as the attribute. </p></li></ul><h2 id="Options-Keys-h-phpcngt-phpcn-ul-Class-list-li-p-strong-top-strong-This-property-accepts-a-strong-Number-strong-which-allows-us-to-set-the-distance-of-the-triangle-from-the-top-of-the-canvas-p-li-ul-h-Example">Options Keys</h2phpcngt phpcn<ul Class= list"><li><p><strong>top</strong> - This property accepts a <strong>Number</strong> which allows us to set the distance of the triangle from the top of the canvas.</p></li> </ul><h2>Example 1</h2> <p><strong>Default appearance of triangle objects</strong></p><p>Let’s look at a code example to see how our triangle objects appear when the top property is not used.</ p><pre class="demo-code notranslate language-javascript" data-lang="javascript"><!DOCTYPE html>
<html>
<head>
<!--Add Fabric JS library-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script>
</head>
<body>
<h2 id="Default-appearance-of-triangle-objects"> Default appearance of triangle objects</h2>
<p> The default appearance of the triangle can be seen when the <b>top</b> attribute is not used. </p>
<canvas id="canvas"></canvas>
<script>
//Start the canvas instance
var canvas = new Fabric.Canvas("canvas");
canvas.setWidth(document.body.scrollWidth);
Canvas.setHeight(250);
//Initialize a triangle object
var triangle = new Fabric.Triangle({
Left: 105,
Width: 90,
Height: 80,
Fill in: "#ffc1cc",
Stroke: "#fbaed2",
Stroke width: 5,
});
//Add it to the canvas
canvas.add(triangle);
</script>
</body>
</html>Example 2
Passing the top attribute as a key using a custom valuephpcn
In this example, we pass the top attribute as the key with a value of 70. This means our triangle object will be placed 70px from the top.
<!DOCTYPE html>
<html>
<head>
<!--Add Fabric JS library-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script>
</head>
<body>
<h2 id="Pass-the-top-attribute-as-a-key-with-a-custom-value">Pass the top attribute as a key with a custom value</h2>
<p>You can see that the triangle object is placed 70px from the top</p>
<canvas id="canvas"></canvas>
<script>
//Start the canvas instance
var canvas = new Fabric.Canvas("canvas");
canvas.setWidth(document.body.scrollWidth);
Canvas.setHeight(250);
//Initialize a triangle object
var triangle = new Fabric.Triangle({
Left: 105,
Top: 70,
Width: 90,
Height: 80,
Fill in: "#ffc1cc",
Stroke: "#fbaed2",
Stroke width: 5,
});
//Add it to the canvas
canvas.add(triangle);
</script>
</body>
</html>The above is the detailed content of How to set the position of a triangle from top using FabricJS?. For more information, please follow other related articles on the PHP Chinese website!
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