In this article, we are going to see how to add a stroke dash pattern to the Polygon canvas using FabricJS. The canvas means Polygon written is movable, rotatable, resizable, and can be stretched. But in this article, we will add a stroke dash pattern. Further, the Polygon itself cannot be edited like a textbox.
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 Polygon. After this, we will initialize instances of Canvas and Polygon provided by FabricJS and create a stroke using stroke property and further use the strokeDashArray property to add stroke dash pattern and render the Canvas on the Polygon as given in the below example.
Syntax:
fabric.Polygon([
{ x: pixel, y: pixel },
{ x: pixel, y: pixel },
{ x: pixel, y: pixel},
{ x: pixel, y: pixel},
{ x: pixel, y: pixel }],
{
strokeDashArray : Array
}
);
Parameters: This property accepts a single value as an array mentioned above and described below:
- Array: It specifies the stroke dash pattern.
Below example illustrate the Fabric.js strokeDashArray:
Example:
HTML
<!DOCTYPE html> <html> <head> <!-- Loading the FabricJS library --> <script src= </script> </head> <body> <div style="text-align: center;width: 600px;"> <h1 style="color: green;"> neveropen </h1> <b> Fabric.js | Polygon strokeDashArray Property </b> </div> <canvas id="canvas" width="600" height="200" style="border:1px solid #000000;"> </canvas> <script> // Initiate a Canvas instance var canvas = new fabric.Canvas("canvas"); // Initiate a polygon instance var polygon = new fabric.Polygon([{ x: 295, y: 10 }, { x: 235, y: 198 }, { x: 385, y: 78 }, { x: 205, y: 78 }, { x: 355, y: 198 }], { stroke: 'green', strokeDashArray: [10] }); // Render the polygon in canvas canvas.add(polygon); </script> </body> </html> |
Output:
