/**
 * An object with all viewport state parameters
 *
 * @public
 */
export interface IViewPortState {
    x: number;
    y: number;
    width: number;
    height: number;
    zMin: number;
    zMax: number;
}
/**
 * Represents a sub set of {@link IViewPortState}
 *
 * @public
 */
export declare type ViewportStateParams = Partial<IViewPortState>;
/**
 * @public
 */
export declare class ViewportState implements IViewPortState {
    protected xField: number;
    protected yField: number;
    protected widthField: number;
    protected heightField: number;
    protected zMinField: number;
    protected zMaxField: number;
    protected hasChanged: boolean;
    protected changes: ViewportStateParams;
    get isDirty(): boolean;
    /**
     * Gets and sets the viewport x parameter
     */
    get x(): number;
    set x(value: number);
    /**
     * Gets and sets the viewport y parameter
     */
    get y(): number;
    set y(value: number);
    /**
     * Gets and sets the viewport width parameter
     */
    get width(): number;
    set width(value: number);
    /**
     * Gets and sets the viewport height parameter
     */
    get height(): number;
    set height(value: number);
    /**
     * Gets and sets the viewport zMin parameter
     */
    get zMin(): number;
    set zMin(value: number);
    /**
     * Gets and sets the viewport zMax parameter
     */
    get zMax(): number;
    set zMax(value: number);
    /**
     * Assigns multiple parameters to the current state
     */
    assign(state?: ViewportStateParams): this;
    /**
     * Uploads all changes to the GPU
     *
     * @param state - State changes to be assigned before committing
     */
    commit(state?: ViewportStateParams): this;
    /**
     * Creates a copy of this state state
     */
    copy(): IViewPortState;
    /**
     * Creates a copy of this state and writes it into the target object
     *
     * @param target - Where the state should be written to
     */
    copy<T>(target: T): T & IViewPortState;
    protected commitChanges(changes: Partial<IViewPortState>): void;
    protected clearChanges(): void;
}
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