/** @packageDocumentation
 * @module Timeline
 */
import { Cartographic, ColorDef } from "@itwin/core-common";
import type { IModelConnection, ScreenViewport } from "@itwin/core-frontend";
import type { SolarDataProvider } from "./interfaces.js";
/** Base class that provides solar data for animation control
 * @alpha
 */
export declare class BaseSolarDataProvider implements SolarDataProvider {
    protected _projectTimeZoneOffset: number;
    protected _viewport: ScreenViewport | undefined;
    protected _cartographicCenter: Cartographic;
    protected _shadowColor: ColorDef;
    longitude: number;
    latitude: number;
    viewId: string;
    supportsTimelineAnimation: boolean;
    animationFraction: number;
    private _projectDayStartMS;
    private _projectSunriseMs;
    private _projectSunsetMs;
    private _zoneOffsetMs;
    private _projectSunrise;
    private _projectSunset;
    private _projectDateTime;
    private _projectDay;
    protected initializeData(projectTimeZoneOffset: number, initialTime?: Date): void;
    constructor(viewport?: ScreenViewport, longitude?: number, latitude?: number);
    get timeZoneOffset(): number;
    get shadowColor(): ColorDef;
    set shadowColor(color: ColorDef);
    get shouldShowTimeline(): boolean;
    /** Get time at project location */
    get timeOfDay(): Date;
    /** The date can be in project time or if isProjectDate is false, it is assumed to be users current local time
     *  which will be adjusted to the same time at project location. */
    setDateAndTime(date: Date, isProjectDate?: boolean): void;
    /** Project Day Start */
    get day(): Date;
    /** Project Day Start in milliseconds */
    get dayStartMs(): number;
    getCartographicCenter(iModel: IModelConnection): Cartographic;
    set viewport(viewport: ScreenViewport | undefined);
    get viewport(): ScreenViewport | undefined;
    protected getZone(location: Cartographic): number;
    get sunrise(): Date;
    get sunriseMs(): number;
    get sunset(): Date;
    get sunsetMs(): number;
    onTimeChanged: (_time: Date) => void;
}
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