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import cache from '../cache';
import ViewportType from '../enums/ViewportType';
import Viewport from './Viewport';
import { createVolumeActor } from './helpers';
import volumeNewImageEventDispatcher, {
resetVolumeNewImageState,
} from './helpers/volumeNewImageEventDispatcher';
import { loadVolume } from '../loaders/volumeLoader';
import vtkSlabCamera from './vtkClasses/vtkSlabCamera';
import { getShouldUseCPURendering } from '../init';
import type {
Point2,
Point3,
IImageData,
IVolumeInput,
ActorEntry,
FlipDirection,
VolumeViewportProperties,
} from '../types';
import type { ViewportInput } from '../types/IViewport';
import type IVolumeViewport from '../types/IVolumeViewport';
import { Events, BlendModes, OrientationAxis } from '../enums';
import eventTarget from '../eventTarget';
import { actorIsA, imageIdToURI, triggerEvent } from '../utilities';
import type { vtkSlabCamera as vtkSlabCameraType } from './vtkClasses/vtkSlabCamera';
import { VoiModifiedEventDetail } from '../types/EventTypes';
import { RENDERING_DEFAULTS } from '../constants';
/**
* Abstract base class for volume viewports. VolumeViewports are used to render
* 3D volumes from which various orientations can be viewed. Since VolumeViewports
* use SharedVolumeMappers behind the scene, memory footprint of visualizations
* of the same volume in different orientations is very small.
*
* For setting volumes on viewports you need to use {@link addVolumesToViewports}
* which will add volumes to the specified viewports.
*/
abstract class BaseVolumeViewport extends Viewport implements IVolumeViewport {
useCPURendering = false;
private _FrameOfReferenceUID: string;
constructor(props: ViewportInput) {
super(props);
this.useCPURendering = getShouldUseCPURendering();
Iif (this.useCPURendering) {
throw new Error(
'VolumeViewports cannot be used whilst CPU Fallback Rendering is enabled.'
);
}
const renderer = this.getRenderer();
const camera = vtkSlabCamera.newInstance();
renderer.setActiveCamera(camera);
switch (this.type) {
case ViewportType.ORTHOGRAPHIC:
camera.setParallelProjection(true);
break;
case ViewportType.VOLUME_3D:
camera.setParallelProjection(true);
break;
case ViewportType.PERSPECTIVE:
camera.setParallelProjection(false);
break;
default:
throw new Error(`Unrecognized viewport type: ${this.type}`);
}
this.initializeVolumeNewImageEventDispatcher();
}
static get useCustomRenderingPipeline(): boolean {
return false;
}
private initializeVolumeNewImageEventDispatcher(): void {
const volumeNewImageHandlerBound = volumeNewImageHandler.bind(this);
const volumeNewImageCleanUpBound = volumeNewImageCleanUp.bind(this);
function volumeNewImageHandler(cameraEvent) {
const { viewportId } = cameraEvent.detail;
Iif (viewportId !== this.id || this.isDisabled) {
return;
}
const viewportImageData = this.getImageData();
if (!viewportImageData) {
return;
}
volumeNewImageEventDispatcher(cameraEvent);
}
function volumeNewImageCleanUp(evt) {
const { viewportId } = evt.detail;
if (viewportId !== this.id) {
return;
}
this.element.removeEventListener(
Events.CAMERA_MODIFIED,
volumeNewImageHandlerBound
);
eventTarget.removeEventListener(
Events.ELEMENT_DISABLED,
volumeNewImageCleanUpBound
);
resetVolumeNewImageState(viewportId);
}
this.element.removeEventListener(
Events.CAMERA_MODIFIED,
volumeNewImageHandlerBound
);
this.element.addEventListener(
Events.CAMERA_MODIFIED,
volumeNewImageHandlerBound
);
eventTarget.addEventListener(
Events.ELEMENT_DISABLED,
volumeNewImageCleanUpBound
);
}
protected resetVolumeViewportClippingRange() {
const activeCamera = this.getVtkActiveCamera();
Eif (activeCamera.getParallelProjection()) {
activeCamera.setClippingRange(
-RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE,
RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE
);
} else {
activeCamera.setClippingRange(
RENDERING_DEFAULTS.MINIMUM_SLAB_THICKNESS,
RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE
);
}
}
/**
* Sets the properties for the volume viewport on the volume
* (if fusion, it sets it for the first volume in the fusion)
*
* @param voiRange - Sets the lower and upper voi
* @param volumeId - The volume id to set the properties for (if undefined, the first volume)
* @param suppressEvents - If true, the viewport will not emit events
*/
public setProperties(
{ voiRange }: VolumeViewportProperties = {},
volumeId?: string,
suppressEvents = false
): void {
if (volumeId !== undefined && !this.getActor(volumeId)) {
return;
}
const actorEntries = this.getActors();
Iif (!actorEntries.length) {
return;
}
let volumeActor;
Eif (volumeId) {
const actorEntry = actorEntries.find((entry: ActorEntry) => {
return entry.uid === volumeId;
});
volumeActor = actorEntry?.actor as vtkVolume;
}
// // set it for the first volume (if there are more than one - fusion)
Iif (!volumeActor) {
volumeActor = actorEntries[0].actor as vtkVolume;
volumeId = actorEntries[0].uid;
}
Iif (!voiRange) {
return;
}
// Todo: later when we have more properties, refactor the setVoiRange code below
const { lower, upper } = voiRange;
volumeActor.getProperty().getRGBTransferFunction(0).setRange(lower, upper);
Eif (!suppressEvents) {
const eventDetail: VoiModifiedEventDetail = {
viewportId: this.id,
range: voiRange,
volumeId: volumeId,
};
triggerEvent(this.element, Events.VOI_MODIFIED, eventDetail);
}
}
/**
* Creates volume actors for all volumes defined in the `volumeInputArray`.
* For each entry, if a `callback` is supplied, it will be called with the new volume actor as input.
* For each entry, if a `blendMode` and/or `slabThickness` is defined, this will be set on the actor's
* `VolumeMapper`.
*
* @param volumeInputArray - The array of `VolumeInput`s which define the volumes to add.
* @param immediate - Whether the `Viewport` should be rendered as soon as volumes are added.
*/
public async setVolumes(
volumeInputArray: Array<IVolumeInput>,
immediate = false,
suppressEvents = false
): Promise<void> {
const firstImageVolume = cache.getVolume(volumeInputArray[0].volumeId);
if (!firstImageVolume) {
throw new Error(
`imageVolume with id: ${firstImageVolume.volumeId} does not exist`
);
}
const FrameOfReferenceUID = firstImageVolume.metadata.FrameOfReferenceUID;
await this._isValidVolumeInputArray(volumeInputArray, FrameOfReferenceUID);
this._FrameOfReferenceUID = FrameOfReferenceUID;
const volumeActors = [];
// One actor per volume
for (let i = 0; i < volumeInputArray.length; i++) {
const { volumeId, actorUID, slabThickness } = volumeInputArray[i];
const actor = await createVolumeActor(
volumeInputArray[i],
this.element,
this.id,
suppressEvents
);
// We cannot use only volumeId since then we cannot have for instance more
// than one representation of the same volume (since actors would have the
// same name, and we don't allow that) AND We cannot use only any uid, since
// we rely on the volume in the cache for mapper. So we prefer actorUID if
// it is defined, otherwise we use volumeId for the actor name.
const uid = actorUID || volumeId;
volumeActors.push({
uid,
actor,
slabThickness,
referenceId: volumeId,
});
}
this._setVolumeActors(volumeActors);
triggerEvent(this.element, Events.VOLUME_VIEWPORT_NEW_VOLUME, {
viewportId: this.id,
volumeActors,
});
Iif (immediate) {
this.render();
}
}
/**
* Creates and adds volume actors for all volumes defined in the `volumeInputArray`.
* For each entry, if a `callback` is supplied, it will be called with the new volume actor as input.
*
* @param volumeInputArray - The array of `VolumeInput`s which define the volumes to add.
* @param immediate - Whether the `Viewport` should be rendered as soon as volumes are added.
*/
public async addVolumes(
volumeInputArray: Array<IVolumeInput>,
immediate = false,
suppressEvents = false
): Promise<void> {
const firstImageVolume = cache.getVolume(volumeInputArray[0].volumeId);
if (!firstImageVolume) {
throw new Error(
`imageVolume with id: ${firstImageVolume.volumeId} does not exist`
);
}
const volumeActors = [];
await this._isValidVolumeInputArray(
volumeInputArray,
this._FrameOfReferenceUID
);
// One actor per volume
for (let i = 0; i < volumeInputArray.length; i++) {
const { volumeId, visibility, actorUID, slabThickness } =
volumeInputArray[i];
const actor = await createVolumeActor(
volumeInputArray[i],
this.element,
this.id,
suppressEvents
);
Iif (visibility === false) {
actor.setVisibility(false);
}
// We cannot use only volumeId since then we cannot have for instance more
// than one representation of the same volume (since actors would have the
// same name, and we don't allow that) AND We cannot use only any uid, since
// we rely on the volume in the cache for mapper. So we prefer actorUID if
// it is defined, otherwise we use volumeId for the actor name.
const uid = actorUID || volumeId;
volumeActors.push({
uid,
actor,
slabThickness,
// although the actor UID is defined, we need to use the volumeId for the
// referenceId, since the actor UID is used to reference the actor in the
// viewport, however, the actor is created from its volumeId
// and if later we need to grab the referenced volume from cache,
// we can use the referenceId to get the volume from the cache
referenceId: volumeId,
});
}
this.addActors(volumeActors);
Iif (immediate) {
// render
this.render();
}
}
/**
* It removes the volume actor from the Viewport. If the volume actor is not in
* the viewport, it does nothing.
* @param actorUIDs - Array of actor UIDs to remove. In case of simple volume it will
* be the volume Id, but in case of Segmentation it will be `{volumeId}-{representationType}`
* since the same volume can be rendered in multiple representations.
* @param immediate - If true, the Viewport will be rendered immediately
*/
public removeVolumeActors(actorUIDs: Array<string>, immediate = false): void {
// Todo: This is actually removeActors
this.removeActors(actorUIDs);
Iif (immediate) {
this.render();
}
}
/**
* It sets the orientation for the camera, the orientation can be one of the
* following: axial, sagittal, coronal, default. Use the Enums.OrientationAxis
* to set the orientation. The "default" orientation is the orientation that
* the volume was acquired in (scan axis)
*
* @param orientation - The orientation to set the camera to.
* @param immediate - Whether the `Viewport` should be rendered as soon as the camera is set.
*/
public setOrientation(orientation: OrientationAxis, immediate = true): void {
console.warn('Method "setOrientation" needs implementation');
}
Eprivate async _isValidVolumeInputArray(
volumeInputArray: Array<IVolumeInput>,
FrameOfReferenceUID: string
): Promise<boolean> {
const numVolumes = volumeInputArray.length;
// Check all other volumes exist and have the same FrameOfReference
for (let i = 1; i < numVolumes; i++) {
const volumeInput = volumeInputArray[i];
const imageVolume = await loadVolume(volumeInput.volumeId);
if (!imageVolume) {
throw new Error(
`imageVolume with id: ${imageVolume.volumeId} does not exist`
);
}
if (FrameOfReferenceUID !== imageVolume.metadata.FrameOfReferenceUID) {
throw new Error(
`Volumes being added to viewport ${this.id} do not share the same FrameOfReferenceUID. This is not yet supported`
);
}
}
return true;
}
/**
* gets the visible bounds of the viewport in the world coordinate system
*/
public getBounds(): number[] {
const renderer = this.getRenderer();
const bounds = renderer.computeVisiblePropBounds();
return bounds;
}
/**
* Flip the viewport along the desired axis
* @param flipDirection - FlipDirection
*/
public flip(flipDirection: FlipDirection): void {
super.flip(flipDirection);
}
public getFrameOfReferenceUID = (): string => {
return this._FrameOfReferenceUID;
};
/**
* Checks if the viewport has a volume actor with the given volumeId
* @param volumeId - the volumeId to look for
* @returns Boolean indicating if the volume is present in the viewport
*/
public hasVolumeId(volumeId: string): boolean {
// Note: this assumes that the uid of the volume is the same as the volumeId
// which is not guaranteed to be the case for SEG.
const actorEntries = this.getActors();
return actorEntries.some((actorEntry) => {
return actorEntry.uid === volumeId;
});
}
/**
* Returns the image and its properties that is being shown inside the
* stack viewport. It returns, the image dimensions, image direction,
* image scalar data, vtkImageData object, metadata, and scaling (e.g., PET suvbw)
* Note: since the volume viewport supports fusion, to get the
* image data for a specific volume, use the optional volumeId
* argument.
*
* @param volumeId - The volumeId of the volume to get the image for.
* @returns IImageData: {dimensions, direction, scalarData, vtkImageData, metadata, scaling}
*/
public getImageData(volumeId?: string): IImageData | undefined {
const defaultActor = this.getDefaultActor();
if (!defaultActor) {
return;
}
const { uid: defaultActorUID } = defaultActor;
volumeId = volumeId ?? defaultActorUID;
const actorEntry = this.getActor(volumeId);
if (!actorIsA(actorEntry, 'vtkVolume')) {
return;
}
const actor = actorEntry.actor;
const volume = cache.getVolume(volumeId);
const vtkImageData = actor.getMapper().getInputData();
return {
dimensions: vtkImageData.getDimensions(),
spacing: vtkImageData.getSpacing(),
origin: vtkImageData.getOrigin(),
direction: vtkImageData.getDirection(),
scalarData: vtkImageData.getPointData().getScalars().getData(),
imageData: actor.getMapper().getInputData(),
metadata: {
Modality: volume?.metadata?.Modality,
},
scaling: volume?.scaling,
hasPixelSpacing: true,
};
}
/**
* Attaches the volume actors to the viewport.
*
* @param volumeActorEntries - The volume actors to add the viewport.
*
*/
private _setVolumeActors(volumeActorEntries: Array<ActorEntry>): void {
this.setActors(volumeActorEntries);
}
/**
* canvasToWorld Returns the world coordinates of the given `canvasPos`
* projected onto the plane defined by the `Viewport`'s `vtkCamera`'s focal point
* and the direction of projection.
*
* @param canvasPos - The position in canvas coordinates.
* @returns The corresponding world coordinates.
* @public
*/
public canvasToWorld = (canvasPos: Point2): Point3 => {
const vtkCamera = this.getVtkActiveCamera() as vtkSlabCameraType;
/**
* NOTE: this is necessary because we want the coordinate transformation
* respect to the view plane (plane orthogonal to the camera and passing to
* the focal point).
*
* When vtk.js computes the coordinate transformations, it simply uses the
* camera matrix (no ray casting).
*
* However for the volume viewport the clipping range is set to be
* (-RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE, RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE).
* The clipping range is used in the camera method getProjectionMatrix().
* The projection matrix is used then for viewToWorld/worldToView methods of
* the renderer. This means that vkt.js will not return the coordinates of
* the point on the view plane (i.e. the depth coordinate will correspond
* to the focal point).
*
* Therefore the clipping range has to be set to (distance, distance + 0.01),
* where now distance is the distance between the camera position and focal
* point. This is done internally, in our camera customization when the flag
* isPerformingCoordinateTransformation is set to true.
*/
vtkCamera.setIsPerformingCoordinateTransformation?.(true);
const renderer = this.getRenderer();
const offscreenMultiRenderWindow =
this.getRenderingEngine().offscreenMultiRenderWindow;
const openGLRenderWindow =
offscreenMultiRenderWindow.getOpenGLRenderWindow();
const size = openGLRenderWindow.getSize();
const devicePixelRatio = window.devicePixelRatio || 1;
const canvasPosWithDPR = [
canvasPos[0] * devicePixelRatio,
canvasPos[1] * devicePixelRatio,
];
const displayCoord = [
canvasPosWithDPR[0] + this.sx,
canvasPosWithDPR[1] + this.sy,
];
// The y axis display coordinates are inverted with respect to canvas coords
displayCoord[1] = size[1] - displayCoord[1];
const worldCoord = openGLRenderWindow.displayToWorld(
displayCoord[0],
displayCoord[1],
0,
renderer
);
vtkCamera.setIsPerformingCoordinateTransformation?.(false);
return [worldCoord[0], worldCoord[1], worldCoord[2]];
};
/**
* Returns the canvas coordinates of the given `worldPos`
* projected onto the `Viewport`'s `canvas`.
*
* @param worldPos - The position in world coordinates.
* @returns The corresponding canvas coordinates.
* @public
*/
public worldToCanvas = (worldPos: Point3): Point2 => {
const vtkCamera = this.getVtkActiveCamera() as vtkSlabCameraType;
/**
* NOTE: this is necessary because we want the coordinate trasformation
* respect to the view plane (plane orthogonal to the camera and passing to
* the focal point).
*
* When vtk.js computes the coordinate transformations, it simply uses the
* camera matrix (no ray casting).
*
* However for the volume viewport the clipping range is set to be
* (-RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE, RENDERING_DEFAULTS.MAXIMUM_RAY_DISTANCE).
* The clipping range is used in the camera method getProjectionMatrix().
* The projection matrix is used then for viewToWorld/worldToView methods of
* the renderer. This means that vkt.js will not return the coordinates of
* the point on the view plane (i.e. the depth coordinate will corresponded
* to the focal point).
*
* Therefore the clipping range has to be set to (distance, distance + 0.01),
* where now distance is the distance between the camera position and focal
* point. This is done internally, in our camera customization when the flag
* isPerformingCoordinateTransformation is set to true.
*/
vtkCamera.setIsPerformingCoordinateTransformation?.(true);
const renderer = this.getRenderer();
const offscreenMultiRenderWindow =
this.getRenderingEngine().offscreenMultiRenderWindow;
const openGLRenderWindow =
offscreenMultiRenderWindow.getOpenGLRenderWindow();
const size = openGLRenderWindow.getSize();
const displayCoord = openGLRenderWindow.worldToDisplay(
...worldPos,
renderer
);
// The y axis display coordinates are inverted with respect to canvas coords
displayCoord[1] = size[1] - displayCoord[1];
const canvasCoord = <Point2>[
displayCoord[0] - this.sx,
displayCoord[1] - this.sy,
];
const devicePixelRatio = window.devicePixelRatio || 1;
const canvasCoordWithDPR = <Point2>[
canvasCoord[0] / devicePixelRatio,
canvasCoord[1] / devicePixelRatio,
];
vtkCamera.setIsPerformingCoordinateTransformation?.(false);
return canvasCoordWithDPR;
};
/*
* Checking if the imageURI is in the volumes that are being
* rendered by the viewport. imageURI is the imageId without the schema
* for instance for the imageId of wadors:http://..., the http://... is the imageURI.
* Why we don't check the imageId is because the same image can be shown in
* another viewport (StackViewport) with a different schema
*
* @param imageURI - The imageURI to check
* @returns True if the imageURI is in the volumes that are being rendered by the viewport
*/
public hasImageURI = (imageURI: string): boolean => {
const volumeActors = this.getActors().filter((actorEntry) =>
actorIsA(actorEntry, 'vtkVolume')
);
return volumeActors.some(({ uid }) => {
const volume = cache.getVolume(uid);
if (!volume || !volume.imageIds) {
return false;
}
const volumeImageURIs = volume.imageIds.map(imageIdToURI);
return volumeImageURIs.includes(imageURI);
});
};
/**
* Reset the camera for the volume viewport
*/
resetCamera(
resetPan?: boolean,
resetZoom?: boolean,
resetToCenter?: boolean
): boolean {
return super.resetCamera(resetPan, resetZoom, resetToCenter);
}
getCurrentImageIdIndex = (): number => {
throw new Error('Method not implemented.');
};
getCurrentImageId = (): string => {
throw new Error('Method not implemented.');
};
getIntensityFromWorld(point: Point3): number {
throw new Error('Method not implemented.');
}
setBlendMode(
blendMode: BlendModes,
filterActorUIDs?: string[],
immediate?: boolean
): void {
throw new Error('Method not implemented.');
}
setSlabThickness(slabThickness: number, filterActorUIDs?: string[]): void {
throw new Error('Method not implemented.');
}
getSlabThickness(): number {
throw new Error('Method not implemented.');
}
}
export default BaseVolumeViewport;
|