public int hashCode() {
        int result = 193;
        result = 37 * result + this.category1.hashCode();
        long temp = Double.doubleToLongBits(this.value1);
        result = 37 * result + (int) (temp ^ (temp >>> 32));
        result = 37 * result + this.category2.hashCode();
        temp = Double.doubleToLongBits(this.value2);
        result = 37 * result + (int) (temp ^ (temp >>> 32));
        result = 37 * result + HashUtilities.hashCodeForPaint(this.paint);
        result = 37 * result + this.stroke.hashCode();
        return result;