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Fabric.js | Rect shadow Property

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In this article, we are going to see how to set the shadow of a canvas rectangle using FabricJS. The canvas means rectangle is movable and can be stretched according to requirement. Further, the rectangle can be customized when it comes to initial stroke color, fill color, stroke width, or size. 

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

Syntax:

fabric.Rect({
    width: number,
    height: number,
    shadow: fabric.shadow
}); 

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

  • width: It specifies the horizontal length.
  • height: It specifies the vertical length.
  • shadow: It specifies the shadow object.

Example: This example uses FabricJS to set shadow of the canvas rectangle. 

HTML




<!DOCTYPE html>
<html>
<head>
    <title
        Fabric.js | Rect shadow Property
    </title>
  
    <!-- FabricJS CDN -->
    <script src=
    </script>
</head>
  
<body>
    <div style="text-align: center;width: 600px;">
        <h1 style="color: green;">
            GeeksforGeeks
        </h1>
        <b>
           Fabric.js | Rect shadow Property
        </b>
    </div>
  
    <div style="text-align: center;">
    <canvas id="canvas" width="600" height="200" 
            style="border:1px solid #000000;">
    </canvas>
    </div>
  
    <script>
        // Initiate a Canvas instance
        var canvas = new fabric.Canvas("canvas");
  
        // Create shadow object 
        var shadow = new fabric.Shadow({ 
            color: 'red', 
            blur: 50
        }); 
  
        // Initiate a Rect instance
        var rect = new fabric.Rect({
            width: 200,
            height: 100,
            shadow: shadow
        });
  
        // Render the rectangle in canvas
        canvas.add(rect);
    </script>
</body>
  
</html>                   


Output:

 



Last Updated : 13 May, 2022
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