import type { Vector3 } from '@holoscript/core';
/**
 * ClothSim.ts
 *
 * Mass-spring cloth simulation: particle grid, distance constraints,
 * pin points, wind, gravity, and self-collision.
 *
 * @module physics
 */
export interface ClothParticle {
    position: Vector3;
    prevPosition: Vector3;
    mass: number;
    pinned: boolean;
    [index: number]: number | boolean | Vector3;
}
export interface ClothConstraint {
    particleA: number;
    particleB: number;
    restLength: number;
    stiffness: number;
}
export interface ClothConfig {
    gravity: number;
    damping: number;
    iterations: number;
    wind: Vector3;
}
export declare class ClothSim {
    private syncParticleCompat;
    private particles;
    private constraints;
    private config;
    private width;
    private height;
    constructor(config?: Partial<ClothConfig>);
    createGrid(width: number, height: number, spacing: number): void;
    private addConstraint;
    pin(index: number): void;
    unpin(index: number): void;
    pinTopRow(): void;
    update(dt: number): void;
    setWind(x: number, y: number, z: number): void;
    getParticle(index: number): ClothParticle | undefined;
    getParticleCount(): number;
    getConstraintCount(): number;
    getGridSize(): {
        width: number;
        height: number;
    };
    getAABB(): {
        min: Vector3;
        max: Vector3;
    };
}
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