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How to set the angle of skew on the Y-axis of a Triangle using FabricJS?
<p>In this tutorial, we are going to learn how to set the angle of skew on the y-axis of a Triangle using FabricJS. Triangle is one of the various shapes provided by FabricJS. In order to create a triangle, we will have to create an instance of <em>fabric.Triangle</em> class and add it to the canvas.</p><p>Our triangle object can be customized in various ways like changing its dimensions, adding a background color or by changing the angle of skew on the Y-axis. We can do this by using the <em>skewY</em> property.</p><h2>Syntax</h2><pre class="just-code notranslate language-javascript" data-lang="javascript">new fabric.Triangle({ skewY : Number }: Object)</pre><h2>Parameters</h2><ul class="list"><li><p><strong>Options</strong><strong> (optional)</strong> − This parameter is an <em>Object</em> which provides additional customizations to our triangle. Using this parameter, properties such as colour, cursor, stroke width, and a lot of other properties can be changed related to the object of which <em>skewY</em> is a property.</p></li></ul><h2>Options Keys</h2><ul class="list"><li><p><strong>skewY</strong> − This property accepts a <strong>Number</strong> value which determines the angle of skew on y-axis of an object.</p></li></ul><h2>Example 1</h2><p><strong>When the skewY property is not applied</strong></p><p>Let's see a code example to understand how our triangle object appears when the <em>skewY</em> property is not applied. In this case, there will be no skew by any angle in our triangle object.</p><pre class="demo-code notranslate language-javascript" data-lang="javascript"><!DOCTYPE html> <html> <head> <!-- Adding the Fabric JS Library--> <script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script> </head> <body> <h2>When the skewY property is not applied</h2> <p>Notice that there is no skew by any angle on the triangle by default.</p> <canvas id="canvas"></canvas> <script> // Initiate a canvas instance var canvas = new fabric.Canvas("canvas"); canvas.setWidth(document.body.scrollWidth); canvas.setHeight(250); // Initiate a triangle object var triangle = new fabric.Triangle({ left: 120, top: 70, width: 90, height: 80, fill: "#b7410e", stroke: "#f5deb3", strokeWidth: 7, }); // Add it to the canvas canvas.add(triangle); <script> </body> </html></pre><h2>Example 2</h2><p><strong>Passing <em>skewY</em> as key and assigning a custom value to it.</strong></p><p>In this example, we will see how we can assign a numerical value to the <em>skewY</em> property. The value that is being passed will determine the skew along the Y-axis.</p><pre class="demo-code notranslate language-javascript" data-lang="javascript"><!DOCTYPE html> <html> <head> <!-- Adding the Fabric JS Library--> <script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script> </head> <body> <h2>Passing skewY as key and assigning it a custom value</h2> <p>Notice that the triangle is skewed along the Y-axis</p> <canvas id="canvas"></canvas> <script> // Initiate a canvas instance var canvas = new fabric.Canvas("canvas"); canvas.setWidth(document.body.scrollWidth); canvas.setHeight(250); // Initiate a triangle object var triangle = new fabric.Triangle({ left: 120, top: 30, width: 90, height: 80, fill: "#b7410e", stroke: "#f5deb3", strokeWidth: 7, skewY: 50, }); // Add it to the canvas canvas.add(triangle); </script> </body> </html></pre>
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