import type { Particle } from "./particle.js";
import type { ThinParticleSystem } from "./thinParticleSystem.js";
/**
 * Class used to represent a particle flow map.
 * #5DM02T#7
 * GPUParts: #5DM02T#12 (webgl2)
 * GPUParts: #5DM02T#13 (webgpu)
 */
export declare class FlowMap {
    readonly width: number;
    readonly height: number;
    readonly data: Uint8ClampedArray;
    /**
     * Create a new flow map.
     * @param width defines the width of the flow map
     * @param height defines the height of the flow map
     * @param data defines the data of the flow map
     */
    constructor(width: number, height: number, data: Uint8ClampedArray);
    /** @internal */
    _processParticle(particle: Particle, system: ThinParticleSystem, strength?: number): void;
    /**
     * Creates a FlowMap from a url.
     * @param url The url of the image to load
     * @returns a promise that resolves to a FlowMap object
     */
    static FromUrlAsync(url: string): Promise<FlowMap>;
}