/**
 * Deterministic fixed-step cloth dynamics for sovereign character garments.
 *
 * The solver is intentionally small and pure-data: point masses are integrated in authored
 * local space, triangle edges become distance constraints, and per-vertex cloth weights pin
 * seams while allowing hems/cuffs/mantles to move. Sampling always restarts from the same rest
 * state and advances an integer number of fixed steps, making replay byte-identical.
 */
export interface ClothSimulationConfig {
    solver: 'xpbd';
    fixedStepHz: number;
    iterations: number;
    damping: number;
    gravity: [number, number, number];
    wind: [number, number, number];
    windFrequency: number;
    tetherStiffness: number;
    constraintStiffness: number;
    maxDisplacement: number;
}
export interface ClothSimulationReceipt {
    solver: 'xpbd';
    timeSeconds: number;
    fixedStepHz: number;
    fixedSteps: number;
    iterations: number;
    dynamicVertexCount: number;
    maxDisplacement: number;
    rmsDisplacement: number;
    positionDigest: string;
}
export declare const DEFAULT_CLOTH_SIMULATION: Readonly<ClothSimulationConfig>;
export declare class DeterministicClothSimulation {
    private readonly rest;
    private readonly weights;
    private readonly edges;
    private readonly config;
    private readonly dynamicVertexCount;
    constructor(restPositions: Float32Array, indices: Uint32Array, clothWeights: Float32Array, config?: Partial<ClothSimulationConfig>);
    getConfig(): ClothSimulationConfig;
    sample(timeSeconds: number): {
        positions: Float32Array<ArrayBuffer>;
        receipt: ClothSimulationReceipt;
    };
}
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