import { BoundingBox, IPoint, Transform } from './geometry';

export declare class Viewport {
    private width;
    private height;
    private cameraPos;
    private cameraScale;
    constructor(width: number, height: number, cameraPos?: IPoint, cameraScale?: number);
    viewToWorld(): Transform;
    worldToView(): Transform;
    screenToView(): Transform;
    viewToScreen(): Transform;
    worldToScreen(): Transform;
    screenToWorld(): Transform;
    screenWidth(): number;
    screenHeight(): number;
    /** Translates the viewport in world coordinates */
    moveBy(dx: number, dy: number): void;
    moveTo(x: number, y: number): void;
    resize(width: number, height: number): void;
    /** The center of the `Viewport` in world coordinates. */
    center(): Readonly<IPoint>;
    scale(): number;
    scaleBy(k: number): void;
    scaleTo(k: number): void;
    /** Moves and scales the camera so that the `boundingBox` (in world coordinates) is visible. */
    fit(boundingBox: BoundingBox): void;
    world(): BoundingBox;
    viewBox(): string;
}