import { Matrix4, Mesh, PerspectiveCamera, OrthographicCamera, WebGLRenderer } from "three";
import Volume from "./Volume.js";
import { type FuseChannel } from "./types.js";
import { Light } from "./Light.js";
import type { VolumeRenderImpl } from "./VolumeRenderImpl.js";
import { VolumeRenderSettings, SettingsFlags } from "./VolumeRenderSettings.js";
import Channel from "./Channel.js";
export default class PathTracedVolume implements VolumeRenderImpl {
    private settings;
    private volume;
    private viewChannels;
    private volumeTexture;
    private cameraIsMoving;
    private sampleCounter;
    private frameCounter;
    private pathTracingUniforms;
    private pathTracingRenderToBuffer;
    private pathTracingRenderTarget;
    private screenTextureRenderToBuffer;
    private screenTextureRenderTarget;
    private denoiseShaderUniforms;
    private screenOutputShaderUniforms;
    private screenOutputDenoiseMaterial;
    private screenOutputMaterial;
    private screenOutputGeometry;
    private screenOutputMesh;
    private gradientDelta;
    private renderUpdateListener?;
    /**
     * Creates a new PathTracedVolume.
     * @param volume The volume that this renderer should render data from.
     * @param settings Optional settings object. If set, updates the renderer with
     * the given settings. Otherwise, uses the default VolumeRenderSettings.
     */
    constructor(volume: Volume, settings?: VolumeRenderSettings);
    cleanup(): void;
    setRenderUpdateListener(callback?: (iteration: number) => void): void;
    resetProgress(): void;
    private getNormVolumeSize;
    /**
     * If the new settings have changed, applies all changes to this volume renderer.
     * @param newSettings
     * @returns
     */
    updateSettings(newSettings: VolumeRenderSettings, dirtyFlags?: number | SettingsFlags): void;
    updateVolumeDimensions(): void;
    doRender(renderer: WebGLRenderer, camera: PerspectiveCamera | OrthographicCamera): void;
    get3dObject(): Mesh;
    onStartControls(): void;
    onChangeControls(): void;
    onEndControls(): void;
    viewpointMoved(): void;
    updateActiveChannels(channelColors: FuseChannel[], channelData: Channel[]): void;
    updateVolumeData4(): void;
    updateLuts(channelColors: FuseChannel[], channelData: Channel[]): void;
    updateMaterial(): void;
    updateShadingMethod(brdf: number): void;
    updateShowLights(showlights: number): void;
    updateExposure(e: number): void;
    updateCamera(fov: number, focalDistance: number, apertureSize: number): void;
    updateLights(state: Light[]): void;
    updateLightsSecondary(cameraMatrix?: Matrix4): void;
    updateClipRegion(xmin: number, xmax: number, ymin: number, ymax: number, zmin: number, zmax: number): void;
    setZSlice(_slice: number): boolean;
}