Animation in EJ2 TypeScript Circular Gauge control

26 Dec 202310 minutes to read

All of the elements in the Circular Gauge, such as the axis lines, ticks, labels, ranges, pointers, and annotations, can be animated sequentially by using the animationDuration property. The animation for the Circular Gauge is enabled when the animationDuration property is set to an appropriate value in milliseconds, providing a smooth rendering effect for the control. If the animationDuration property is set to 0, which is the default value, the animation effect is disabled. If the animation is enabled, the control will behave in the following order.

  1. The axis line will be animated in the rendering direction (clockwise or anticlockwise).
  2. Each tick line and label will then be animated.
  3. If available, ranges will be animated.
  4. If available, pointers will be animated in the same way as pointer animation.
  5. If available, annotations will be animated.

The animation of the Circular Gauge is demonstrated in the following example.

import { CircularGauge, Annotations, Gradient } from '@syncfusion/ej2-circulargauge';
CircularGauge.Inject(Annotations, Gradient);
let circulargauge: CircularGauge = new CircularGauge({
    animationDuration: 2000,
    axes: [
        {
            annotations: [{
                angle: 165,
                radius: '35%',
                zIndex: 1,
                content: '<div style="font-size:18px;margin-left: -20px;margin-top: -12px; color:#9DD55A">60</div>'
            }
            ],
            radius: '80%',
            startAngle: 230,
            endAngle: 130,
            majorTicks: {
                offset: 5,
            },
            lineStyle: { width: 8, color: '#E0E0E0' },
            minorTicks: {
                offset: 5,
            },
            labelStyle: {
                font: {
                    fontFamily: 'inherit',
                },
                offset: -1,
            },
            pointers: [
                {
                    value: 60,
                    radius: '60%',
                    pointerWidth: 7,
                    cap: {
                        radius: 8,
                        color: '#c06c84',
                        border: { width: 0 },
                    },
                    needleTail: {
                        length: '0%',
                    },
                    color: '#c06c84',
                    animation: {
                        enable: true,
                        duration: 500,
                    },
                },
            ],
            ranges: [
                {
                    start: 0,
                    end: 30,
                    color: '#E63B86',
                    startWidth: 22,
                    endWidth: 22,
                    radius: '60%',
                    linearGradient: {
                        startValue: '0%',
                        endValue: '100%',
                        colorStop: [
                            { color: '#9e40dc', offset: '0%', opacity: 1 },
                            { color: '#d93c95', offset: '70%', opacity: 1 }
                        ]
                    }
                },
                {
                    start: 30,
                    end: 60,
                    color: '#E0E0E0',
                    startWidth: 22,
                    endWidth: 22,
                    radius: '60%'
                }
            ]
        },
    ],
});
circulargauge.appendTo('#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="https://cdn.syncfusion.com/ej2/29.1.33/ej2-popups/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Only the pointer of the Circular Gauge can be animated individually, not the axis lines, ticks, labels, ranges, and annotations. You can refer this link to enable only pointer animation.