/**
 * GrassRenderer.ts
 *
 * Grass blade generation: procedural blade mesh,
 * LOD with billboarding, color variation, and density control.
 *
 * @module environment
 */
export interface GrassBlade {
    position: [number, number, number];
    height: number;
    width: number;
    bendFactor: number;
    color: {
        r: number;
        g: number;
        b: number;
    };
    lodLevel: number;
    isBillboard: boolean;
}
export interface GrassConfig {
    baseHeight: number;
    heightVariation: number;
    baseWidth: number;
    widthVariation: number;
    baseColor: {
        r: number;
        g: number;
        b: number;
    };
    tipColor: {
        r: number;
        g: number;
        b: number;
    };
    colorVariation: number;
    billboardDistance: number;
    cullDistance: number;
    bendRange: number;
    bladesPerUnit: number;
}
export declare class GrassRenderer {
    private config;
    private blades;
    constructor(config?: Partial<GrassConfig>);
    generate(bounds: {
        x: number;
        z: number;
        w: number;
        h: number;
    }, seed?: number): void;
    updateLOD(cameraPos: [number, number, number] | {
        x: number;
        z: number;
        y?: number;
    }): void;
    getBladeCount(): number;
    getVisibleBlades(): GrassBlade[];
    getBillboardCount(): number;
    getConfig(): GrassConfig;
    setConfig(config: Partial<GrassConfig>): void;
}
//# sourceMappingURL=GrassRenderer.d.ts.map