Rotate Around Distance

class Example extends Phaser.Scene
{
    constructor ()
    {
        super();
    }

    preload ()
    {
        this.load.setBaseURL('https://cdn.phaserfiles.com/v410');
        this.load.image('ball', 'assets/sprites/shinyball.png');
    }

    create ()
    {
        this.group = this.add.group();

        for (let i = 0; i < 32; i++)
        {
            this.group.create(i * 32, i * 2, 'ball');
        }
    }

    update ()
    {
        Phaser.Actions.RotateAroundDistance(this.group.getChildren(), { x: 400, y: 300 }, 0.02, 200);
    }
}

const config = {
    scale: { mode: Phaser.Scale.FIT },
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#2d2d2d',
    parent: 'game-container',
    scene: Example
};

const game = new Phaser.Game(config);