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How to set the position of a Triangle from top using FabricJS?
<p>In this tutorial, we are going to set the position of triangle using FabricJS. The <em>top</em> property allows us to manipulate the position of the object. By default, the top position is relative to the object's top.</p><h2>Syntax</h2><pre class="just-code notranslate language-javascript" data-lang="javascript">new fabric.Triangle({ top: 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 the <em>top</em> is a property.</p></li></ul><h2>Options Keys</h2><ul class="list"><li><p><strong>top</strong> − This property accepts a <strong>Number</strong> which allows us to set the distance from top of the canvas for triangle.</p></li></ul><h2>Example 1</h2><p><strong>Default appearance of the Triangle object</strong></p><p>Let's see a code example to understand how our triangle object would appear when the top property is not used.</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>Default appearance of the Triangle object</h2> <p>You can see the default appearance of the triangle when the <b>top</b> property is not used.</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: 105, width: 90, height: 80, fill: "#ffc1cc", stroke: "#fbaed2", strokeWidth: 5, }); // Add it to the canvas canvas.add(triangle); </script> </body> </html></pre><h2>Example 2</h2><p><strong>Passing the <em>top</em> property as key with a custom value</strong></p><p>In this example, we are passing the <em>top</em> property as key, with a value of 70. This means that our triangle object will be placed at a distance of 70px from the top.</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 the top property as key with a custom value</h2> <p>You can see the triangle object is placed at a distance of 70 px from the top</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: 105, top: 70, width: 90, height: 80, fill: "#ffc1cc", stroke: "#fbaed2", strokeWidth: 5, }); // Add it to the canvas canvas.add(triangle); </script> </body> </html></pre>
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