import { TEasingFn } from "../../../Core/Animations/EasingFunctions";
import { Point } from "../../../Core/Point";
import { EChart2DModifierType } from "../../../types/ChartModifierType";
import { EModifierType } from "../../../types/ModifierType";
import { IThemeProvider } from "../../Themes/IThemeProvider";
import { PolarArcAnnotation } from "../../Visuals/Annotations/PolarArcAnnotation";
import { ChartModifierBase2D, IChartModifierBaseOptions } from "../ChartModifierBase2D";
import { ModifierMouseArgs } from "../ModifierMouseArgs";
declare type TArcZoomParams = {
    angleStart: number;
    angleEnd: number;
    radiusInner: number;
    radiusOuter: number;
};
/**
 * Optional parameters used to configure a {@link PolarArcZoomModifier} at construct time
 */
export interface IPolarArcZoomModifierOptions extends IChartModifierBaseOptions {
    /**
     * Sets the fill of {@link PolarArcAnnotation} used for segment selection
     */
    fill?: string;
    /**
     * Sets the stroke of {@link PolarArcAnnotation} used for segment selection
     */
    stroke?: string;
    /**
     * Sets the strokeThickness of {@link PolarArcAnnotation} used for segment selection
     */
    strokeThickness?: number;
    /**
     * When true, the Zoom operations are animated. See also {@link animationDuration} and {@link easingFunction}
     */
    isAnimated?: boolean;
    /**
     * Defines the duration of animations when zooming in milliseconds
     */
    animationDuration?: number;
    /**
     * Defines the easing function for animation. See {@link TEasingFn} for a range of functions
     */
    easingFunction?: TEasingFn | string;
}
/**
 * The PolarArcZoomModifier provides drag-arc segment to zoom behavior on a 2D {@link SciChartPolarSurface}
 * within SciChart - High Performance {@link https://www.scichart.com/javascript-chart-features | JavaScript Charts}
 * Supports flipped and not flipped X Axis
 * @remarks
 *
 * To apply the PolarArcZoomModifier to a {@link SciChartPolarSurface} and add drag to zoom behavior,
 * use the following code:
 *
 * ```ts
 * const sciChartSurface: SciChartPolarSurface;
 * sciChartSurface.chartModifiers.add(new PolarArcZoomModifier());
 * ```
 *
 * Animation of the zoom may be controlled via the {@link PolarArcZoomModifier.isAnimated},
 * {@link PolarArcZoomModifier.animationDuration} and {@link PolarArcZoomModifier.easingFunction} properties.
 *
 * ---
 * 📚 Docs: {@link https://www.scichart.com/documentation/js/v4/2d-charts/chart-modifier-api/polar-modifiers/polar-arc-zoom-modifier/}
 */
export declare class PolarArcZoomModifier extends ChartModifierBase2D {
    static readonly MIN_DRAG_SENSITIVITY = 5;
    readonly type = EChart2DModifierType.PolarArcZoom;
    /**
     * When true, the Zoom operations are animated. See also {@link animationDuration} and {@link easingFunction}
     */
    isAnimated: boolean;
    /**
     * Defines the duration of animations when zooming in milliseconds
     */
    animationDuration: number;
    /**
     * Defines the easing function for animation. See {@link TEasingFn} for a range of functions
     */
    easingFunction: TEasingFn;
    protected pointFrom: Point | undefined;
    protected polarPointFrom: Point | undefined;
    protected pointTo: Point | undefined;
    protected polarPointTo: Point | undefined;
    protected isClicked: boolean;
    protected arcAnnotation: PolarArcAnnotation | undefined;
    private fillProperty;
    private strokeProperty;
    private strokeThicknessProperty;
    /**
     * Creates an instance of a PolarArcZoomModifier
     * @param options Optional parameters of type {@link IPolarArcZoomModifierOptions} used to configure the modifier
     *
     * ---
     * 📚 Docs: {@link https://www.scichart.com/documentation/js/v4/2d-charts/chart-modifier-api/polar-modifiers/polar-arc-zoom-modifier/}
     */
    constructor(options?: IPolarArcZoomModifierOptions);
    /** @inheritDoc */
    get modifierType(): EModifierType;
    /** @inheritDoc */
    applyTheme(themeProvider: IThemeProvider): void;
    /** @inheritDoc */
    onAttach(): void;
    /** @inheritDoc */
    onDetach(): void;
    /** @inheritDoc */
    modifierMouseDown(args: ModifierMouseArgs): void;
    /**
     * used internally, caps polar coordinates to be within visible range of angular & radial axes
     * @param polarPoint
     * @returns
     */
    private capPolarCoordinates;
    private getArcParams;
    private updateArcAnnotation;
    /** @inheritDoc */
    modifierMouseMove(args: ModifierMouseArgs): void;
    private clear;
    /** @inheritDoc */
    modifierMouseUp(args: ModifierMouseArgs): void;
    /**
     * Gets or sets the stroke thickness for the arc segment
     */
    get strokeThickness(): number;
    set strokeThickness(value: number);
    /**
     * Gets or sets the stroke for arc segment
     */
    get stroke(): string;
    set stroke(value: string);
    /**
     * Gets or sets the fill color for the arc segment
     */
    get fill(): string;
    set fill(value: string);
    /** @inheritDoc */
    toJSON(): {
        type: string;
        options: Required<Omit<IChartModifierBaseOptions, never>>;
    };
    /** @inheritDoc */
    delete(): void;
    /**
     * Performs the zoom operation on the parent Surface, using the mouse points from & to, which
     * define the corners of the arc segment
     */
    protected performZoom(arcZoomParams: TArcZoomParams): void;
    protected calculateDraggedDistance(): number;
    private calculateArcOrigin;
    private handleAddArcAnnotation;
    private handleRemoveArcAnnotation;
}
export {};