Circle Body

var config = {
    type: Phaser.AUTO,
    width: 800,
    height: 600,
    backgroundColor: '#1b1464',
    parent: 'phaser-example',
    physics: {
        default: 'matter',
        matter: {
            debug: true
        }
    },
    scene: {
        preload: preload,
        create: create
    }
};

var game = new Phaser.Game(config);

function preload ()
{
        this.load.setBaseURL('https://cdn.phaserfiles.com/v355');
    this.load.image('red', 'assets/sprites/columns-red.png');
}

function create ()
{
    this.matter.world.setBounds().disableGravity();

    var circ = this.matter.add.image(200, 50, 'red');

    //  Change the body to a Circle with a radius of 48px
    circ.setBody({
        type: 'circle',
        radius: 48
    });

    //  Just make the body move around and bounce
    circ.setVelocity(6, 3);
    circ.setAngularVelocity(0.01);
    circ.setBounce(1);
    circ.setFriction(0, 0, 0);
}