interface RGB {
    r: number;
    g: number;
    b: number;
}
/** Per-vertex Gouraud shader with interpolated vertex normals. */
export declare class GouraudShader {
    /** Computes Gouraud-shaded RGB light contribution for a vertex. */
    shade(nx: number, ny: number, nz: number, lights: Record<string, unknown>[], ambientIntensity?: number, wx?: number, wy?: number, wz?: number): RGB;
}
export {};
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