import { IParticleSystem2dComponent, ParticleRenderBuffers, ParticleSystem2dRenderOptions } from '@gg-web-engine/core';
import { ParticleContainer, Texture } from 'pixi.js';
import { PixiDisplayObjectComponent } from './pixi-display-object.component';
import { PixiVisualTypeDocRepo2D } from '../types';
/**
 * pixi.js-only particle system options, merged into `ParticleSystem2dRenderOptions` when creating a
 * system (`factory.createParticleSystem` / `world.addParticleSystem`).
 */
export type PixiParticleSystemExtraOpts = {
    /**
     * Whether sprite positions are rounded to whole pixels (crisp pixel art). Default `false`.
     *
     * @example
     * ```ts
     * world.addParticleSystem({ capacity: 64, texture: pixelDust, roundPixels: true }, { lifetime: 0.4 });
     * ```
     */
    roundPixels?: boolean;
};
/**
 * The pixi.js `IParticleSystem2dComponent`: a `ParticleContainer` whose `particleChildren` are
 * `capacity` pooled plain `IParticle` records, refilled from core's `ParticleRenderBuffers` on every
 * `setParticles` - position, scale (the particle's size in world units over the frame's size in
 * pixels), rotation, anchor (pixi's own `anchorX`/`anchorY`, the point at the position that the
 * sprite turns around), packed tint and opacity, and the atlas region as a sub-texture of the system's
 * texture (one `Texture` per distinct region, created on demand and shared by every particle
 * showing it). Every property is dynamic, so the container re-uploads them each frame. The
 * container's own `tint`/`opacity` multiply the particles' (inherited, like any pixi container).
 *
 * pixi's `ParticleContainer` never computes bounds itself, so `getBoundings`/`getLocalBoundings`
 * report whatever `nativeSprite.boundsArea` was set to (an empty box by default).
 */
export declare class PixiParticleSystemComponent extends PixiDisplayObjectComponent implements IParticleSystem2dComponent<PixiVisualTypeDocRepo2D> {
    readonly nativeSprite: ParticleContainer;
    readonly capacity: number;
    private readonly _renderOptions;
    get renderOptions(): Readonly<ParticleSystem2dRenderOptions<Texture>>;
    private readonly pool;
    /** sub-textures of the current texture by atlas region, see `frameTexture` */
    private readonly frameTextures;
    constructor(options: ParticleSystem2dRenderOptions<Texture> & PixiParticleSystemExtraOpts);
    get texture(): Texture | null;
    set texture(value: Texture | null);
    setParticles(buffers: ParticleRenderBuffers): void;
    /**
     * The sub-texture of the system's texture showing the atlas region (normalized, top-left origin),
     * the texture itself for the whole image.
     */
    private frameTexture;
    private disposeFrameTextures;
    clone(): PixiParticleSystemComponent;
    popChild(): null;
    dispose(): void;
}