Fabric.js Circle flipY Property

In this article, we are going to see how to vertically flip a circle canvas using FabricJS. The canvas circle is movable and can be stretched according to requirements. Further, the circle can be customized when it comes to initial stroke color, height, width, fill color, or stroke width.

To make it possible, we are going to use a JavaScript library called FabricJS. After importing the library, we will create a canvas block in the body tag which will contain the circle. After this, we will initialize instances of the canvas circle provided by FabricJS and set the flipY property, and render the circle on the canvas as given in the below example.

Syntax:

fabric.Circle({
   radius: number,
   flipY: Boolean
});

Parameters: This function accepts two parameters as mentioned above and described below.

  • radius: It specifies the radius of the circle.
  • flipY: It specifies that the object flips vertically.

Example: This example uses FabricJS to flip the canvas circle vertically.

HTML




<!DOCTYPE html>
<html>
  
<head>
      
    <!-- 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;">
        w3wiki
    </h1>
  
    <h3>
        Fabric.js Circle flipY 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 Circle instance 
        var circle = new fabric.Circle({
            radius: 100,
            fill: '',
            stroke: 'green',
            strokeWidth: 3,
            flipX: false,
            flipY: true
        });
  
        // Render the circle in canvas 
        canvas.add(circle);
        canvas.centerObject(circle);
    </script>
</body>
  
</html>


Output: