import type { FluidDimension } from './kernels.js';
export type FluidCalibrationMode = 'manual' | 'particle-volume' | 'self-kernel' | 'discrete-lattice';
export interface FluidCalibrationOptions {
    mode?: FluidCalibrationMode | undefined;
    dimension?: FluidDimension | undefined;
    restDensity?: number | undefined;
    spacing?: number | undefined;
    smoothingRadius?: number | undefined;
    particleRadius?: number | undefined;
    particleMass?: number | undefined;
    mass?: number | undefined;
}
export interface FluidReferenceLatticeOptions {
    spacing: number;
    smoothingRadius: number;
    dimension?: FluidDimension | undefined;
}
export interface FluidReferenceLattice {
    kernelWeightSum: number;
    neighborCount: number;
}
export interface FluidCalibrationResult {
    readonly mode: FluidCalibrationMode;
    readonly dimension: 2 | 3;
    readonly spacing: number;
    readonly smoothingRadius: number;
    readonly smoothingRadiusRatio: number;
    readonly particleRadius: number;
    readonly particleMass: number;
    readonly restDensity: number;
    readonly expectedNeighborCount: number;
    readonly referenceDensity: number;
    readonly referenceDensityError: number;
    readonly neighborQuality: 'low' | 'useful';
}
/**
 * Deterministically calibrates equal-mass particle-fluid layouts.
 */
export declare class FluidCalibration {
    static calibrate(options?: FluidCalibrationOptions): Readonly<FluidCalibrationResult>;
    static referenceLattice({ spacing, smoothingRadius, dimension, }: FluidReferenceLatticeOptions): FluidReferenceLattice;
}
export declare function calibrateFluid(options?: FluidCalibrationOptions): Readonly<FluidCalibrationResult>;