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import { getRenderingEngines, utilities } from '@cornerstonejs/core';
import { pubSubServiceInterface, Types } from '@ohif/core';
import createHydrateSegmentationSynchronizer from './createHydrateSegmentationSynchronizer';
const EVENTS = {
TOOL_GROUP_CREATED: 'event::cornerstone::syncgroupservice:toolgroupcreated',
};
/**
* @params options - are an optional set of options associated with the first
* sync group declared.
*/
export type SyncCreator = (id: string, options?: Record<string, unknown>) => Synchronizer;
export type SyncGroup = {
type: string;
id?: string;
// Source and target default to true if not specified
source?: boolean;
target?: boolean;
options?: Record<string, unknown>;
};
const POSITION = 'cameraposition';
const VOI = 'voi';
const ZOOMPAN = 'zoompan';
const STACKIMAGE = 'stackimage';
const IMAGE_SLICE = 'imageslice';
const HYDRATE_SEG = 'hydrateseg';
const asSyncGroup = (syncGroup: string | SyncGroup): SyncGroup =>
typeof syncGroup === 'string' ? { type: syncGroup } : syncGroup;
export default class SyncGroupService {
static REGISTRATION = {
name: 'syncGroupService',
altName: 'SyncGroupService',
create: ({ servicesManager }: Types.Extensions.ExtensionParams): SyncGroupService => {
return new SyncGroupService(servicesManager);
},
};
servicesManager: AppTypes.ServicesManager;
listeners: { [key: string]: (...args: any[]) => void } = {};
EVENTS: { [key: string]: string };
synchronizerCreators: Record<string, SyncCreator> = {
[POSITION]: synchronizers.createCameraPositionSynchronizer,
[VOI]: synchronizers.createVOISynchronizer,
[ZOOMPAN]: synchronizers.createZoomPanSynchronizer,
// todo: remove stack image since it is legacy now and the image_slice
// handles both stack and volume viewports
[STACKIMAGE]: synchronizers.createImageSliceSynchronizer,
[IMAGE_SLICE]: synchronizers.createImageSliceSynchronizer,
[HYDRATE_SEG]: createHydrateSegmentationSynchronizer,
};
synchronizersByType: { [key: string]: Synchronizer[] } = {};
constructor(servicesManager: AppTypes.ServicesManager) {
this.servicesManager = servicesManager;
this.listeners = {};
this.EVENTS = EVENTS;
//
Object.assign(this, pubSubServiceInterface);
}
private _createSynchronizer(type: string, id: string, options): Synchronizer | undefined {
// Initialize if not already done
this.synchronizersByType[type] = this.synchronizersByType[type] || [];
const syncCreator = this.synchronizerCreators[type.toLowerCase()];
if (syncCreator) {
// Pass the servicesManager along with other parameters
const synchronizer = syncCreator(id, { ...options, servicesManager: this.servicesManager });
if (synchronizer) {
this.synchronizersByType[type].push(synchronizer);
return synchronizer;
}
} else E{
console.debug(`Unknown synchronizer type: ${type}, id: ${id}`);
}
}
public getSyncCreatorForType(type: string): SyncCreator {
return this.synchronizerCreators[type.toLowerCase()];
}
/**
* Creates a synchronizer type.
* @param type is the type of the synchronizer to create
* @param creator
*/
public addSynchronizerType(type: string, creator: SyncCreator): void {
this.synchronizerCreators[type.toLowerCase()] = creator;
}
public getSynchronizer(id: string): Synchronizer | void {
return SynchronizerManager.getSynchronizer(id);
}
/**
* Registers a custom synchronizer.
* @param id - The id of the synchronizer.
* @param createFunction - The function that creates the synchronizer.
*/
public registerCustomSynchronizer(id: string, createFunction: SyncCreator): void {
this.synchronizerCreators[id] = createFunction;
}
/**
* Retrieves an array of synchronizers of a specific type.
* @param type - The type of synchronizers to retrieve.
* @returns An array of synchronizers of the specified type.
*/
public getSynchronizersOfType(type: string): Synchronizer[] {
return this.synchronizersByType[type];
}
protected _getOrCreateSynchronizer(
type: string,
id: string,
options: Record<string, unknown>
): Synchronizer | undefined {
let synchronizer = SynchronizerManager.getSynchronizer(id);
if (!synchronizer) {
synchronizer = this._createSynchronizer(type, id, options);
}
return synchronizer;
}
public addViewportToSyncGroup(
viewportId: string,
renderingEngineId: string,
syncGroups?: SyncGroup | string | SyncGroup[] | string[]
): void {
Iif (!syncGroups) {
return;
}
const syncGroupsArray = Array.isArray(syncGroups) ? syncGroups : [syncGroups];
syncGroupsArray.forEach(syncGroup => {
const syncGroupObj = asSyncGroup(syncGroup);
const { type, target = true, source = true, options = {}, id = type } = syncGroupObj;
const synchronizer = this._getOrCreateSynchronizer(type, id, options);
Iif (!synchronizer) {
return;
}
synchronizer.setOptions(viewportId, options);
const viewportInfo = { viewportId, renderingEngineId };
if (target && source) {
synchronizer.add(viewportInfo);
return;
} else Eif (source) {
synchronizer.addSource(viewportInfo);
} else Iif (target) {
synchronizer.addTarget(viewportInfo);
}
});
}
public destroy(): void {
SynchronizerManager.destroy();
}
public getSynchronizersForViewport(viewportId: string): Synchronizer[] {
const renderingEngine =
getRenderingEngines().find(re => {
return re.getViewports().find(vp => vp.id === viewportId);
}) || getRenderingEngines()[0];
const synchronizers = SynchronizerManager.getAllSynchronizers();
return synchronizers.filter(
s =>
s.hasSourceViewport(renderingEngine.id, viewportId) ||
s.hasTargetViewport(renderingEngine.id, viewportId)
);
}
public removeViewportFromSyncGroup(
viewportId: string,
renderingEngineId: string,
syncGroupId?: string
): void {
const synchronizers = SynchronizerManager.getAllSynchronizers();
const filteredSynchronizers = syncGroupId
? synchronizers.filter(s => s.id === syncGroupId)
: synchronizers;
filteredSynchronizers.forEach(synchronizer => {
Iif (!synchronizer) {
return;
}
// Only image slice synchronizer register spatial registration
Iif (this.isImageSliceSyncronizer(synchronizer)) {
this.unRegisterSpatialRegistration(synchronizer);
}
synchronizer.remove({
viewportId,
renderingEngineId,
});
// check if any viewport is left in any of the sync groups, if not, delete that sync group
const sourceViewports = synchronizer.getSourceViewports();
const targetViewports = synchronizer.getTargetViewports();
Iif (!sourceViewports.length && !targetViewports.length) {
SynchronizerManager.destroySynchronizer(synchronizer.id);
}
});
}
/**
* Clean up the spatial registration metadata created by synchronizer
* This is needed to be able to re-sync images slices if needed
* @param synchronizer
*/
unRegisterSpatialRegistration(synchronizer: Synchronizer) {
const sourceViewports = synchronizer.getSourceViewports().map(vp => vp.viewportId);
const targetViewports = synchronizer.getTargetViewports().map(vp => vp.viewportId);
// Create an array of pair of viewports to remove from spatialRegistrationMetadataProvider
// All sourceViewports combined with all targetViewports
const toUnregister = sourceViewports
.map((sourceViewportId: string) => {
return targetViewports.map(targetViewportId => [targetViewportId, sourceViewportId]);
})
.reduce((acc, c) => acc.concat(c), []);
toUnregister.forEach(viewportIdPair => {
utilities.spatialRegistrationMetadataProvider.add(viewportIdPair, undefined);
});
}
/**
* Check if the synchronizer type is IMAGE_SLICE
* Need to convert to lowercase here because the types are lowercase
* e.g: synchronizerCreators
* @param synchronizer
*/
isImageSliceSyncronizer(synchronizer: Synchronizer) {
return this.getSynchronizerType(synchronizer).toLowerCase() === IMAGE_SLICE;
}
/**
* Returns the syncronizer type
* @param synchronizer
*/
getSynchronizerType(synchronizer: Synchronizer): string {
const synchronizerTypes = Object.keys(this.synchronizersByType);
const syncType = synchronizerTypes.find(syncType =>
this.getSynchronizersOfType(syncType).includes(synchronizer)
);
return syncType;
}
}
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