import { Rectangle } from '../rectangle';
import { Packing } from './Packing';
import { Algorithm } from '../../../utils/algorithm';
export declare abstract class OptimalPacking extends Algorithm {
    desiredAspectRatio: number;
    bestPackingCost: number;
    bestPacking: Packing;
    protected rectangles: Array<Rectangle>;
    cachedCosts: Map<number, number>;
    createPacking: (rects: Rectangle[], limit: number) => Packing;
    constructor(rectangles: Rectangle[], aspectRatio: number);
    get PackedWidth(): number;
    get PackedHeight(): number;
    static MaxSteps: number;
    Pack(lowerBound: number, upperBound: number, minGranularity: number): void;
    PackLimit(limit: number): number;
    static GoldenSectionSearch(f: (x: number) => number, x1: number, x2: number, x3: number, precision: number): number;
    static GetGoldenSectionStep(x1: number, x2: number): number;
}