Method validate

docs/app/js/sanddance-app.js:75635–75637

()

        return this.check();
    }
    validate() {
        return validateOrder(this[3]) && Number.isFinite(this[0]) && Number.isFinite(this[1]) && Number.isFinite(this[2]);
    }
    toArray(array = [], offset = 0) {
        array[offset] = this[0];
        array[offset + 1] = this[1];