Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
How to set the height of a Triangle using FabricJS?
<p>In this tutorial, we are going to learn how to set the height 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>We can manipulate a triangle object by changing its position, opacity, stroke and also its dimension. FabricJS allows us to control an object's dimensions by using the <em>width</em> and <em>height</em> properties.</p><h2>Syntax</h2><pre class="just-code notranslate language-javascript" data-lang="javascript">new fabric.Triangle({ height: 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>height</em> is a property.</p></li></ul><h2>Options Keys</h2><ul class="list"><li><p><strong>height</strong> − This property accepts a <strong>Number</strong> value which allows us to specify the object's height. Its default value is 100.</p></li></ul><h2>Example 1</h2><p><strong>Default behaviour of <em>height</em> property</strong></p><p>Let's see a code example to understand the default behaviour of the height property.</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 behaviour of height property</h2> <p>Notice that the default triangle's height is 100.</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, fill: "#746cc0", stroke: "#967bb6", strokeWidth: 5, }); // Add it to the canvas canvas.add(triangle); </script> </body> </html></pre><h2>Example 2</h2><p><strong>Passing <em>height</em> property as key</strong></p><p>Now that we have assigned the <em>height</em> property a value of 140px, we can see the changes in its height.</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 height property as key</h2> <p>You can see that the triangle's height now has a fixed value of 140.</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: 140, fill: "#746cc0", stroke: "#967bb6", strokeWidth: 5, }); // Add it to the canvas canvas.add(triangle); </script> </body> </html></pre>
77 Views
