How to flip a rectangle vertically using FabricJS?
In this tutorial, we will learn how to flip a Rectangle object vertically using FabricJS. Rectangle is one of the various shapes provided by FabricJS. In order to create a rectangle, we must create an instance of the Fabric.Rect class and add it to the canvas. We can flip the rectangular object vertically using the FlipY property.
Syntax
new fabric.Rect({ flipY: Boolean }: Object)Parameters
Options (optional) - This parameter is a ## that provides additional customization #Object to our rectangle. Using this parameter, you can change the color, cursor, stroke width, and other properties related to the object with FlipY as the attribute.
flipY - This property accepts a Boolean value that allows We flip the object vertically. < /p>
Passing flipY as a key with a False value
Let’s Take a look at a code example that shows us the default orientation of a rectangle object in FabricJS. Since we passed a False value to the < p>flipY property, the rectangular object will not flip vertically.<!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 flipY as key with a False value</h2>
<p>You can see that the object has not flipped vertically.</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 rectangle object
var rect = new fabric.Rect({
left: 125,
top: 90,
width: 170,
height: 70,
borderColor: "purple",
borderScaleFactor: 3,
flipY: false,
});
// Create gradient fill
rect.set(
"fill",
new fabric.Gradient({
type: "linear",
coords: { x1: 0, y1: 0, x2: 0, y2: 50 },
colorStops: [
{ offset: 0, color: "pink" },
{ offset: 1, color: "blue" },
],
})
);
// Add it to the canvas
canvas.add(rect);
</script>
</body>
</html>Passing the flipY attribute as a key with a value of "true"
In this example, We have a rectangular object with a width of 170 px and a height of 70 px, with a vertical linear gradient fill. When we apply the FlipY property to the rectangular object, it flips vertically, so we see the gradient flipped as well.<!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 the flipY property as key with a True value</h2>
<p>You can see now that the object has flipped vertically.</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 rectangle object
var rect = new fabric.Rect({
left: 125,
top: 90,
width: 170,
height: 70,
borderColor: "purple",
borderScaleFactor: 3,
flipY: true,
});
// Create gradient fill
rect.set(
"fill",
new fabric.Gradient({
type: "linear",
coords: { x1: 0, y1: 0, x2: 0, y2: 50 },
colorStops: [
{ offset: 0, color: "pink" },
{ offset: 1, color: "blue" },
],
})
);
// Add it to the canvas
canvas.add(rect);
</script>
</body>
</html>The above is the detailed content of How to flip a rectangle vertically using FabricJS?. For more information, please follow other related articles on the PHP Chinese website!
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