Function width

docs/app/js/sanddance-app.js:121976–121978

()

        return !(x13 < this.x1 || x13 > this.x2 || y12 < this.y1 || y12 > this.y2);
    },
    width () {
        return this.x2 - this.x1;
    },
    height () {
        return this.y2 - this.y1;
    }