import * as THREE from 'three';
import { BaseScatterSystem, BaseScatterConfig, ChunkData } from '../core';
/**
 * Configuration for curve-based scatter
 */
export interface CurveScatterConfig extends BaseScatterConfig {
    /** Curve to scatter along */
    curve: THREE.Curve<THREE.Vector3>;
    /** Optional handles for rotation interpolation */
    handles?: THREE.Object3D[];
    /** Number of segments along the curve */
    segmentCount?: number;
    /** Alternative: spacing between instances */
    spacing?: number;
    /** Perpendicular offset range */
    offsetRange?: [number, number];
    /** Distribution width perpendicular to curve */
    width?: number;
}
/**
 * Scatter system distributing instances along a curve
 */
export declare class CurveScatterSystem extends BaseScatterSystem {
    private curve;
    private handles?;
    private curvePoints;
    private curveTangents;
    private segmentCount;
    private spacing?;
    private offsetRange?;
    private width?;
    constructor(config: CurveScatterConfig);
    protected initializeDistribution(): Promise<void>;
    private generateCurvePoints;
    protected updateChunks(): void;
    protected populateChunk(chunk: ChunkData, centerX: number, centerZ: number): void;
    /**
     * Update the curve and regenerate
     */
    updateCurve(curve: THREE.Curve<THREE.Vector3>, segmentCount?: number): void;
}
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