swipe_clutch.js

    var gesture = {
        delta: { 
            X: 0, 
            Y: 0, 
            T: 0
        },
        start: { 
            X: 0,
            Y: 0,
            T: 0,
            Z: 0
        },
        touch: null,
        move: null,
        swipe: { direction: null },
        drag: false,
        update: function(event) {
            this.touch = event.changedTouches[0] || null;
            this.delta.X = this.touch.pageX - this.start.X;
            this.delta.Y = this.touch.pageY - this.start.Y;
            this.delta.T = (new Date).getTime() - this.start.T;            
        }
    };