Method set

docs/app/js/sanddance-app.js:74690–74696

(x, y, z, w)

        return this.check();
    }
    set(x, y, z, w) {
        this[0] = x;
        this[1] = y;
        this[2] = z;
        this[3] = w;
        return this.check();
    }
    fromObject(object) {
        this[0] = object.x;
        this[1] = object.y;