import { ModifierMouseArgs } from "../../Charting/ChartModifiers/ModifierMouseArgs";
import { EventHandler } from "../../Core/EventHandler";
import { EChart3DModifierType } from "../../types/ChartModifierType";
import { ChartModifierBase3D, IChartModifierBase3DOptions } from "./ChartModifierBase3D";
import { IRenderableSeries3D } from "../Visuals/RenderableSeries/BaseRenderableSeries3D";
import { HoveredChangedArgs3D } from "../Visuals/RenderableSeries/HoveredChangedArgs3D";
import { SelectionChangedArgs3D } from "../Visuals/RenderableSeries/SelectionChangedArgs3D";
/**
 * The type of the {@link ISeriesSelectionModifier3DOptions.onSelectionChanged } callback function
 */
export declare type TSelectionChangedCallback3D = (args: SelectionChangedArgs3D) => void;
/**
 * The type of the {@link ISeriesSelectionModifier3DOptions.onHoverChanged } callback function
 */
export declare type THoveredChangedCallback3D = (args: HoveredChangedArgs3D) => void;
export interface ISeriesSelectionModifier3DOptions extends IChartModifierBase3DOptions {
    /**
     * When true, Selection is enabled. Any series under the mouse or pointer device on mouseDown can be selected.
     *
     * Default `true`
     */
    enableSelection?: boolean;
    /**
     * When true, hover is enabled. Any series under the mouse or pointer on mouseMove will be notified as mouseOver.
     * @remarks Enabling hover will decrease performance as a hit-test operation must be performed every mouse-move.
     *
     * Default `false`
     */
    enableHover?: boolean;
    /**
     * Pixel radius used for hover and selection hit-testing around the mouse point.
     * A value of 0 means exact pixel only.
     *
     * Default `2`
     */
    hitTestRadius?: number;
    /**
     * Optional callback for when any series is selected or deselected
     */
    onSelectionChanged?: TSelectionChangedCallback3D | string;
    /**
     * Optional callback for when any series is hovered or unhovered
     */
    onHoverChanged?: THoveredChangedCallback3D | string;
    /**
     * When true, if multiple series are hit at a pixel, the one with hit-point closest to camera is preferred.
     * Default `false`
     *
     * @note Use together with a larger `hitTestRadius` to improve hover behavior for thin 3D lines (a value of 10 instead of the default 2).
     */
    prioritizeClosestToCamera?: boolean;
}
/**
 * The SeriesSelectionModifier3D provides series selection and hover behavior on a 3D {@link SciChart3DSurface}
 */
export declare class SeriesSelectionModifier3D extends ChartModifierBase3D {
    readonly type: EChart3DModifierType;
    /**
     * An array of currently selected series which can be observed by subscribing to the {@link selectionChanged} {@link EventHandler | event handler}
     */
    selectedSeries: IRenderableSeries3D[];
    /**
     * An array of currently hovered series which can be observed by subscribing to the {@link hoverChanged} {@link EventHandler | event handler}
     */
    hoveredSeries: IRenderableSeries3D[];
    /**
     * A selection-changed EventHandler. This is raised whenever any included series is selected or unselected.
     */
    readonly selectionChanged: EventHandler<SelectionChangedArgs3D>;
    /**
     * A hover-changed EventHandler. This is raised whenever any included series is hovered or unhovered.
     */
    readonly hoverChanged: EventHandler<HoveredChangedArgs3D>;
    /**
     * When true, Selection is enabled. Any series under the mouse or pointer device on mouseUp can be selected.
     * Default `true`
     */
    enableSelection: boolean;
    /**
     * When true, hover is enabled. Any series under the mouse or pointer on mouseMove will be notified as mouseOver.
     * Default `false`
     */
    enableHover: boolean;
    readonly hitTestRadius: number;
    readonly prioritizeClosestToCamera: boolean;
    private preventReentrancy;
    constructor(options?: ISeriesSelectionModifier3DOptions);
    /** @inheritDoc */
    onAttach(): void;
    /** @inheritDoc */
    onDetach(): void;
    /** @inheritDoc */
    onAttachSeries(rs: any): void;
    /** @inheritDoc */
    onDetachSeries(rs: any): void;
    /** @inheritDoc */
    modifierMouseDown(args: ModifierMouseArgs): void;
    /** @inheritDoc */
    modifierMouseMove(args: ModifierMouseArgs): void;
    /** @inheritDoc */
    onParentSurfaceRendered(): void;
    /** @inheritDoc */
    modifierMouseLeave(args: ModifierMouseArgs): void;
    /** @inheritDoc */
    modifierPointerCancel(args: ModifierMouseArgs): void;
    /** @inheritDoc */
    modifierMouseUp(args: ModifierMouseArgs): void;
    toJSON(): {
        type: string;
        options: Required<Omit<IChartModifierBase3DOptions, never>>;
    };
    private onRenderableSeriesCollectionChanged;
    private updateHoverState;
    /**
     * Performs point-based hit-testing with a small pixel tolerance.
     * This improves hover detection for thin 3D lines without affecting click selection behavior.
     */
    private findFirstHit;
    /**
     * Samples multiple screen positions around the mouse point up to searchRadius and
     * returns the hit whose world coordinate is closest to camera.
     */
    private findClosestHitToCamera;
    private hitTestAtPoint;
    private hitTestAtPointAllSeries;
    private distanceSquaredToCamera;
    private getHitTestRadius;
    /**
     * This function called when the user sets series.isSelected = true elsewhere in code and we want to sync the modifier
     */
    private updateSeriesSelected;
    private updateSeriesHovered;
}