import { FovPolicy } from "./FovPolicy";
/** Keeps the horizontal FOV constant; derives the vertical FOV from the aspect ratio. */
export declare class FovPolicyFixedHorizontal extends FovPolicy {
    private fovHorizontalInternal;
    /** @param fovHorizontal - Clamped to 1-179 degrees. */
    constructor(fovHorizontal: number);
    /** Target horizontal FOV. */
    get fovHorizontal(): number;
    /** Clamped to 1-179 degrees. */
    set fovHorizontal(value: number);
    calculateFov(aspect: number): number;
    clone(): FovPolicyFixedHorizontal;
}