Fabric.js Ellipse angle Property

Last Updated : 25 Jan, 2021

In this article, we are going to see how to draw a fixed angled canvas Ellipse using FabricJS. The canvas Ellipse means the Ellipse is movable and can be stretched according to requirement. Further, the Ellipse can be customized when it comes to initial stroke color, height, width, fill color, or stroke width.

Approach:

To make this possible we are going to use a JavaScript HTML5 canvas library called FabricJS.
After importing the library, we will create a canvas block in the body tag which will contain the Ellipse.
After this, we will initialize instances of Canvas and Ellipse provided by FabricJS and enable the angle of the canvas Ellipse using angle property and render the Ellipse on the Canvas as given below.

Syntax:

fabric.Ellipse({
   rx: number,
   ry: number,
   fill: string,
   angle: number
});

Parameters: This function accept four parameters as mentioned above and described below:

rx: It specifies the horizontal radius.
ry: It specifies the vertical radius.
fill: It specifies the color to fill the ellipse.
angle: This parameter defines the angle of the Ellipse.

Example: This example uses FabricJS to enable the angle of the canvas-like Ellipse as given below.

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        Fabric.js Ellipse angle Property 
    </title> 
  
    <!-- FabricJS CDN -->
    <script src= 
"https://cdnjs.cloudflare.com/ajax/libs/fabric.js/3.6.2/fabric.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="color: green;"> 
        GeeksforGeeks 
    </h1> 
  
    <h3> 
        Fabric.js Ellipse angle Property 
    </h3> 
  
    <canvas id="canvas" width="600" height="300" 
        style="border:1px solid #000000"> 
    </canvas> 
  
    <script> 
  
        // Initiate a Canvas instance  
        var canvas = new fabric.Canvas("canvas"); 
  
        // Initiate a Ellipse instance  
        var ellipse = new fabric.Ellipse({ 
            rx: 150, 
            ry: 75, 
            fill: '', 
            stroke: 'green', 
            angle: 45 
        }); 
  
        // Render the ellipse in canvas  
        canvas.add(ellipse); 
        canvas.centerObject(ellipse); 
    </script> 
</body> 
  
</html>