import { Section } from '../common/geometry';
import { ViewWindow } from '../common/ViewWindow';
export declare type InterpolationMode = 'trilinear' | 'nearestNeighbor' | 'vr-mask-custom';
export interface TransferFunctionEntry {
    color: string;
    position: number;
}
export declare type TransferFunction = Array<TransferFunctionEntry>;
export interface MprViewState {
    type: 'mpr';
    section: Section;
    window: ViewWindow;
    interpolationMode?: InterpolationMode;
}
export interface VrViewState {
    type: 'vr';
    interpolationMode?: InterpolationMode;
    /**
     * Affects global alpha of each voxel.
     */
    rayIntensityCoef?: number;
    /**
     * Zoom value.
     */
    zoom: number;
    /**
     * Horizontal rotation of the camera measured in degree.
     */
    horizontal: number;
    /**
     * Vertical rotation of the camera measured in degree.
     */
    vertical: number;
    /**
     * Sub-volume
     */
    subVolume?: {
        offset: [number, number, number];
        dimension: [number, number, number];
    };
    transferFunction: TransferFunction;
    /**
     * Where for the camera to look at.
     * If omitted, the default is the center of the (sub)volume,
     * which is the required behavior in almost all cases.
     */
    target?: [number, number, number];
    /**
     * Background fill color for outside of the volume boundary.
     */
    background: [number, number, number, number];
    /**
     * Controls the rendering quality. Higher is better and slower.
     * The default value is 1.0.
     */
    quality?: number;
}
/**
 * ViewState determines how an ImageSource is displayed on each Viewer.
 */
declare type ViewState = MprViewState | VrViewState;
export default ViewState;