/**
 * TreePlacer.ts
 *
 * Procedural tree placement: biome rules, collision avoidance,
 * density control, and distribution patterns.
 *
 * @module environment
 */
export interface TreeTemplate {
    id: string;
    meshId: string;
    minScale: number;
    maxScale: number;
    trunkRadius: number;
    biomes: string[];
    probability: number;
}
export interface PlacedTree {
    id: string;
    templateId: string;
    position: [number, number, number];
    scale: number;
    rotation: number;
}
export interface BiomeRule {
    id: string;
    name: string;
    density: number;
    minSpacing: number;
    heightRange: {
        min: number;
        max: number;
    };
    slopeMax: number;
}
export declare class TreePlacer {
    private templates;
    private biomes;
    private trees;
    addTemplate(template: TreeTemplate): void;
    getTemplate(id: string): TreeTemplate | undefined;
    getTemplateCount(): number;
    addBiome(biome: BiomeRule): void;
    getBiome(id: string): BiomeRule | undefined;
    placeInRegion(biomeId: string, bounds: {
        x: number;
        z: number;
        w: number;
        h: number;
    }, heightSampler?: (x: number, z: number) => number, slopeSampler?: (x: number, z: number) => number, seed?: number): PlacedTree[];
    private checkSpacing;
    private pickTemplate;
    getPlacedCount(): number;
    getAllTrees(): PlacedTree[];
    getTreesInRadius(x: number, z: number, radius: number): PlacedTree[];
    removeTree(id: string): boolean;
    clear(): void;
}
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