iceye-angular-cesium-fork
Version:
Angular library for working with Cesium.
225 lines • 35.1 kB
JavaScript
import { merge, of as observableOf, Subject } from 'rxjs';
import { filter, map, mergeMap, switchMap, takeUntil, tap } from 'rxjs/operators';
import { Injectable } from '@angular/core';
import { CesiumService } from '../cesium/cesium.service';
import { CesiumEventBuilder } from './cesium-event-builder';
import { PickOptions } from './consts/pickOptions.enum';
import { CesiumEvent } from './consts/cesium-event.enum';
import { PlonterService } from '../plonter/plonter.service';
import { UtilsService } from '../../utils/utils.service';
import { CesiumDragDropHelper } from './event-observers/cesium-drag-drop-helper';
class Registration {
constructor(observable, stopper, priority, isPaused) {
this.observable = observable;
this.stopper = stopper;
this.priority = priority;
this.isPaused = isPaused;
}
}
/**
* Manages all map events. Notice events will run outside of Angular zone.
* Provided by `<ac-map/>` component there for could be injected at any component under `<ac-map/>` hierarchy
* or from the `<ac-map/>` component reference `acMapComponent.getMapEventsManager()`
*
* __usage:__
* ```
* MapEventsManagerService.register({event, modifier, priority, entityType, pickOption}).subscribe()
* ```
* __param:__ {CesiumEvent} event
* __param:__ {CesiumEventModifier} modifier
* __param:__ priority - the bigger the number the bigger the priority. default : 0.
* __param:__ entityType - entity type class that you are interested like (Track). the class must extends AcEntity
* __param:__ pickOption - self explained
*/
export class MapEventsManagerService {
constructor(cesiumService, eventBuilder, plonterService) {
this.cesiumService = cesiumService;
this.eventBuilder = eventBuilder;
this.plonterService = plonterService;
this.eventRegistrations = new Map();
}
init() {
this.eventBuilder.init();
this.scene = this.cesiumService.getScene();
}
/**
* Register to map event
* @param input Event Registration Input
*
* @returns DisposableObservable<EventResult>
*/
register(input) {
if (this.scene === undefined) {
throw new Error('CesiumService has not been initialized yet - MapEventsManagerService must be injected under ac-map');
}
input.pick = input.pick || PickOptions.NO_PICK;
input.priority = input.priority || 0;
input.pickConfig = input.pickConfig || {};
if (input.entityType && input.pick === PickOptions.NO_PICK) {
throw new Error('MapEventsManagerService: can\'t register an event ' +
'with entityType and PickOptions.NO_PICK - It doesn\'t make sense ');
}
const eventName = CesiumEventBuilder.getEventFullName(input.event, input.modifier);
if (!this.eventRegistrations.has(eventName)) {
this.eventRegistrations.set(eventName, []);
}
const eventRegistration = this.createEventRegistration(input);
const registrationObservable = eventRegistration.observable;
registrationObservable.dispose = () => this.disposeObservable(eventRegistration, eventName);
this.eventRegistrations.get(eventName).push(eventRegistration);
this.sortRegistrationsByPriority(eventName);
return registrationObservable;
}
disposeObservable(eventRegistration, eventName) {
eventRegistration.stopper.next(1);
const registrations = this.eventRegistrations.get(eventName);
const index = registrations.indexOf(eventRegistration);
if (index !== -1) {
registrations.splice(index, 1);
}
this.sortRegistrationsByPriority(eventName);
}
sortRegistrationsByPriority(eventName) {
const registrations = this.eventRegistrations.get(eventName);
registrations.sort((a, b) => b.priority - a.priority);
if (registrations.length === 0) {
return;
}
// Active registrations by priority
const currentPriority = registrations[0].priority;
registrations.forEach((registration) => {
registration.isPaused = registration.priority < currentPriority;
});
}
createEventRegistration({ event, modifier, entityType, pick: pickOption, priority, pickFilter, pickConfig, }) {
const cesiumEventObservable = this.eventBuilder.get(event, modifier);
const stopper = new Subject();
const registration = new Registration(undefined, stopper, priority, false);
let observable;
if (!CesiumDragDropHelper.dragEvents.has(event)) {
observable = cesiumEventObservable.pipe(filter(() => !registration.isPaused), map((movement) => this.triggerPick(movement, pickOption, pickConfig)), filter((result) => result.cesiumEntities !== null || entityType === undefined), map((picksAndMovement) => this.addEntities(picksAndMovement, entityType, pickOption, pickFilter)), filter((result) => result.entities !== null || (entityType === undefined && !pickFilter)), switchMap((entitiesAndMovement) => this.plonter(entitiesAndMovement, pickOption)), takeUntil(stopper));
}
else {
observable = this.createDragEvent({
event,
modifier,
entityType,
pick: pickOption,
priority,
pickFilter,
pickConfig
}).pipe(takeUntil(stopper));
}
registration.observable = observable;
return registration;
}
createDragEvent({ event, modifier, entityType, pick: pickOption, priority, pickFilter, pickConfig, }) {
const { mouseDownEvent, mouseUpEvent } = CesiumDragDropHelper.getDragEventTypes(event);
const mouseUpObservable = this.eventBuilder.get(mouseUpEvent);
const mouseMoveObservable = this.eventBuilder.get(CesiumEvent.MOUSE_MOVE);
const mouseDownRegistration = this.createEventRegistration({
event: mouseDownEvent,
modifier,
entityType,
pick: pickOption,
priority,
pickFilter,
pickConfig,
});
const dropSubject = new Subject();
const dragObserver = mouseDownRegistration.observable.pipe(mergeMap(e => {
let lastMove = null;
const dragStartPositionX = e.movement.startPosition.x;
const dragStartPositionY = e.movement.startPosition.y;
return mouseMoveObservable.pipe(map((movement) => {
lastMove = {
movement: {
drop: false,
startPosition: {
x: dragStartPositionX,
y: dragStartPositionY,
},
endPosition: movement.endPosition,
},
entities: e.entities,
cesiumEntities: e.cesiumEntities
};
return lastMove;
}), takeUntil(mouseUpObservable), tap({
complete: () => {
// On complete
if (lastMove) {
const dropEvent = Object.assign({}, lastMove);
dropEvent.movement.drop = true;
dropSubject.next(dropEvent);
}
}
}));
}));
return merge(dragObserver, dropSubject);
}
triggerPick(movement, pickOptions, pickConfig) {
let picks = [];
switch (pickOptions) {
case PickOptions.PICK_ONE:
case PickOptions.PICK_ALL:
picks = this.scene.drillPick(movement.endPosition, pickConfig.drillPickLimit, pickConfig.pickWidth, pickConfig.pickHeight);
picks = picks.length === 0 ? null : picks;
break;
case PickOptions.PICK_FIRST:
const pick = this.scene.pick(movement.endPosition, pickConfig.pickWidth, pickConfig.pickHeight);
picks = pick === undefined ? null : [pick];
break;
case PickOptions.NO_PICK:
break;
default:
break;
}
// Picks can be cesium entity or cesium primitive
if (picks) {
picks = picks.map((pick) => pick.id && pick.id instanceof Cesium.Entity ? pick.id : pick.primitive);
}
return { movement: movement, cesiumEntities: picks };
}
addEntities(picksAndMovement, entityType, pickOption, pickFilter) {
if (picksAndMovement.cesiumEntities === null) {
picksAndMovement.entities = null;
return picksAndMovement;
}
let entities = [];
if (pickOption !== PickOptions.NO_PICK) {
if (entityType) {
entities = picksAndMovement.cesiumEntities.map((pick) => pick.acEntity).filter((acEntity) => {
return acEntity && acEntity instanceof entityType;
});
}
else {
entities = picksAndMovement.cesiumEntities.map((pick) => pick.acEntity);
}
entities = UtilsService.unique(entities);
entities = (pickFilter && entities) ? entities.filter(pickFilter) : entities;
if (entities.length === 0) {
entities = null;
}
}
picksAndMovement.entities = entities;
return picksAndMovement;
}
plonter(entitiesAndMovement, pickOption) {
if (pickOption === PickOptions.PICK_ONE && entitiesAndMovement.entities !== null && entitiesAndMovement.entities.length > 1) {
return this.plonterService.plonterIt(entitiesAndMovement);
}
else {
return observableOf(entitiesAndMovement);
}
}
}
MapEventsManagerService.decorators = [
{ type: Injectable }
];
MapEventsManagerService.ctorParameters = () => [
{ type: CesiumService },
{ type: CesiumEventBuilder },
{ type: PlonterService }
];
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{ merge, Observable, of as observableOf, Subject } from 'rxjs';\n\nimport { filter, map, mergeMap, switchMap, takeUntil, tap } from 'rxjs/operators';\nimport { Injectable } from '@angular/core';\nimport { CesiumService } from '../cesium/cesium.service';\nimport { CesiumEventBuilder } from './cesium-event-builder';\nimport { EventRegistrationInput, PickConfiguration } from './event-registration-input';\nimport { DisposableObservable } from './disposable-observable';\nimport { PickOptions } from './consts/pickOptions.enum';\nimport { CesiumEvent } from './consts/cesium-event.enum';\nimport { PlonterService } from '../plonter/plonter.service';\nimport { UtilsService } from '../../utils/utils.service';\nimport { CesiumDragDropHelper } from './event-observers/cesium-drag-drop-helper';\n\nclass Registration {\n  constructor(public observable: Observable<EventResult>,\n              public  stopper: Subject<any>,\n              public  priority: number,\n              public  isPaused: boolean) {\n  }\n}\n\n/**\n * Returns screen position, drag boolean for drag events only\n */\nexport interface Movement {\n  startPosition: { x: number, y: number };\n  endPosition: { x: number, y: number };\n  drop?: boolean;\n}\n\nexport interface EventResult {\n  movement: Movement;\n  cesiumEntities: any[];\n  entities: any[];\n}\n\n/**\n * Manages all map events. Notice events will run outside of Angular zone.\n * Provided by `<ac-map/>` component there for could be injected at any component under `<ac-map/>` hierarchy\n * or from the `<ac-map/>` component reference `acMapComponent.getMapEventsManager()`\n *\n * __usage:__\n * ```\n * MapEventsManagerService.register({event, modifier, priority, entityType, pickOption}).subscribe()\n * ```\n * __param:__ {CesiumEvent} event\n * __param:__ {CesiumEventModifier} modifier\n * __param:__ priority - the bigger the number the bigger the priority. default : 0.\n * __param:__ entityType - entity type class that you are interested like (Track). the class must extends AcEntity\n * __param:__ pickOption - self explained\n */\n@Injectable()\nexport class MapEventsManagerService {\n\n  private scene: any;\n  private eventRegistrations = new Map<string, Registration[]>();\n\n  constructor(private cesiumService: CesiumService,\n              private eventBuilder: CesiumEventBuilder,\n              private plonterService: PlonterService) {\n  }\n\n  init() {\n    this.eventBuilder.init();\n    this.scene = this.cesiumService.getScene();\n  }\n\n  /**\n   * Register to map event\n   * @param input Event Registration Input\n   *\n   * @returns DisposableObservable<EventResult>\n   */\n  register(input: EventRegistrationInput): DisposableObservable<EventResult> {\n    if (this.scene === undefined) {\n      throw new Error('CesiumService has not been initialized yet - MapEventsManagerService must be injected  under ac-map');\n    }\n\n    input.pick = input.pick || PickOptions.NO_PICK;\n    input.priority = input.priority || 0;\n    input.pickConfig = input.pickConfig || {};\n\n    if (input.entityType && input.pick === PickOptions.NO_PICK) {\n      throw new Error('MapEventsManagerService: can\\'t register an event ' +\n        'with entityType and PickOptions.NO_PICK - It doesn\\'t make sense ');\n    }\n\n    const eventName = CesiumEventBuilder.getEventFullName(input.event, input.modifier);\n\n    if (!this.eventRegistrations.has(eventName)) {\n      this.eventRegistrations.set(eventName, []);\n    }\n\n    const eventRegistration = this.createEventRegistration(input);\n    const registrationObservable: any = eventRegistration.observable;\n    registrationObservable.dispose = () => this.disposeObservable(eventRegistration, eventName);\n    this.eventRegistrations.get(eventName).push(eventRegistration);\n\n    this.sortRegistrationsByPriority(eventName);\n    return <DisposableObservable<EventResult>>registrationObservable;\n  }\n\n  private disposeObservable(eventRegistration: Registration, eventName: string) {\n    eventRegistration.stopper.next(1);\n    const registrations = this.eventRegistrations.get(eventName);\n    const index = registrations.indexOf(eventRegistration);\n    if (index !== -1) {\n      registrations.splice(index, 1);\n    }\n    this.sortRegistrationsByPriority(eventName);\n  }\n\n  private sortRegistrationsByPriority(eventName: string) {\n    const registrations = this.eventRegistrations.get(eventName);\n    registrations.sort((a, b) => b.priority - a.priority);\n    if (registrations.length === 0) {\n      return;\n    }\n\n    // Active registrations by priority\n    const currentPriority = registrations[0].priority;\n    registrations.forEach((registration) => {\n      registration.isPaused = registration.priority < currentPriority;\n    });\n\n  }\n\n  private createEventRegistration({\n                                    event,\n                                    modifier,\n                                    entityType,\n                                    pick: pickOption,\n                                    priority,\n                                    pickFilter,\n                                    pickConfig,\n                                  }: EventRegistrationInput): Registration {\n    const cesiumEventObservable = this.eventBuilder.get(event, modifier);\n    const stopper = new Subject<any>();\n\n    const registration = new Registration(undefined, stopper, priority, false);\n    let observable: Observable<EventResult>;\n\n    if (!CesiumDragDropHelper.dragEvents.has(event)) {\n      observable = cesiumEventObservable.pipe(\n        filter(() => !registration.isPaused),\n        map((movement) => this.triggerPick(movement, pickOption, pickConfig)),\n        filter((result) => result.cesiumEntities !== null || entityType === undefined),\n        map((picksAndMovement) => this.addEntities(picksAndMovement, entityType, pickOption, pickFilter)),\n        filter((result) => result.entities !== null || (entityType === undefined && !pickFilter)),\n        switchMap((entitiesAndMovement) => this.plonter(entitiesAndMovement, pickOption)),\n        takeUntil(stopper));\n    } else {\n      observable = this.createDragEvent({\n        event,\n        modifier,\n        entityType,\n        pick: pickOption,\n        priority,\n        pickFilter,\n        pickConfig\n      }).pipe(takeUntil(stopper));\n    }\n\n    registration.observable = observable;\n    return registration;\n  }\n\n  private createDragEvent({\n                            event,\n                            modifier,\n                            entityType,\n                            pick: pickOption,\n                            priority,\n                            pickFilter,\n                            pickConfig,\n                          }: EventRegistrationInput): Observable<EventResult> {\n    const { mouseDownEvent, mouseUpEvent } = CesiumDragDropHelper.getDragEventTypes(event);\n\n    const mouseUpObservable = this.eventBuilder.get(mouseUpEvent);\n    const mouseMoveObservable = this.eventBuilder.get(CesiumEvent.MOUSE_MOVE);\n\n    const mouseDownRegistration = this.createEventRegistration({\n      event: mouseDownEvent,\n      modifier,\n      entityType,\n      pick: pickOption,\n      priority,\n      pickFilter,\n      pickConfig,\n    });\n\n    const dropSubject = new Subject<EventResult>();\n    const dragObserver = mouseDownRegistration.observable.pipe(mergeMap(e => {\n      let lastMove: any = null;\n      const dragStartPositionX = e.movement.startPosition.x;\n      const dragStartPositionY = e.movement.startPosition.y;\n      return mouseMoveObservable.pipe(map((movement) => {\n        lastMove = {\n          movement: {\n            drop: false,\n            startPosition: {\n              x: dragStartPositionX,\n              y: dragStartPositionY,\n            },\n            endPosition: movement.endPosition,\n          },\n          entities: e.entities,\n          cesiumEntities: e.cesiumEntities\n        };\n        return lastMove;\n      }), takeUntil(mouseUpObservable), tap({\n        complete: () => {\n          // On complete\n          if (lastMove) {\n            const dropEvent = Object.assign({}, lastMove);\n            dropEvent.movement.drop = true;\n            dropSubject.next(dropEvent);\n          }\n        }\n      }));\n    }));\n\n    return merge(dragObserver, dropSubject);\n\n  }\n\n  private triggerPick(movement: any, pickOptions: PickOptions, pickConfig: PickConfiguration) {\n    let picks: any = [];\n    switch (pickOptions) {\n      case PickOptions.PICK_ONE:\n      case PickOptions.PICK_ALL:\n        picks = this.scene.drillPick(movement.endPosition, pickConfig.drillPickLimit, pickConfig.pickWidth, pickConfig.pickHeight);\n        picks = picks.length === 0 ? null : picks;\n        break;\n      case PickOptions.PICK_FIRST:\n        const pick = this.scene.pick(movement.endPosition, pickConfig.pickWidth, pickConfig.pickHeight);\n        picks = pick === undefined ? null : [pick];\n        break;\n      case PickOptions.NO_PICK:\n        break;\n      default:\n        break;\n    }\n\n    // Picks can be cesium entity or cesium primitive\n    if (picks) {\n      picks = picks.map((pick: any) => pick.id && pick.id instanceof Cesium.Entity ? pick.id : pick.primitive);\n    }\n\n    return { movement: movement, cesiumEntities: picks };\n  }\n\n  private addEntities(picksAndMovement: any, entityType: any, pickOption: PickOptions, pickFilter?: (any) => boolean): EventResult {\n\n    if (picksAndMovement.cesiumEntities === null) {\n      picksAndMovement.entities = null;\n      return picksAndMovement;\n    }\n    let entities = [];\n    if (pickOption !== PickOptions.NO_PICK) {\n      if (entityType) {\n        entities = picksAndMovement.cesiumEntities.map((pick: any) => pick.acEntity).filter((acEntity: any) => {\n          return acEntity && acEntity instanceof entityType;\n        });\n      } else {\n        entities = picksAndMovement.cesiumEntities.map((pick: any) => pick.acEntity);\n      }\n\n      entities = UtilsService.unique(entities);\n      entities = (pickFilter && entities) ? entities.filter(pickFilter) : entities;\n      if (entities.length === 0) {\n        entities = null;\n      }\n    }\n\n    picksAndMovement.entities = entities;\n\n    return picksAndMovement;\n  }\n\n  private plonter(entitiesAndMovement: EventResult, pickOption: PickOptions): Observable<EventResult> {\n    if (pickOption === PickOptions.PICK_ONE && entitiesAndMovement.entities !== null && entitiesAndMovement.entities.length > 1) {\n      return this.plonterService.plonterIt(entitiesAndMovement);\n    } else {\n      return observableOf(entitiesAndMovement);\n    }\n  }\n}\n"]}