extensions/interactions/InteractiveMap/directives/interactive-map-rules.service.ts - develop - githubmirror/oppia

extensions/interactions/InteractiveMap/directives/interactive-map-rules.service.ts

80 строк2 KB

Hardik Goyal

Fix #7092: Remove downgradeComponent (#21903)

18 фев 2025, 21:22

18 фев 2025, 21:224dbd84c

// Copyright 2019 The Oppia Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

/**
 * @fileoverview Rules service for the interaction.
 */

import {Injectable} from '@angular/core';

import {InteractiveMapAnswer} from 'interactions/answer-defs';
import {InteractiveMapRuleInputs} from 'interactions/rule-input-defs';

@Injectable({
  providedIn: 'root',
})
export class InteractiveMapRulesService {
  static RADIUS_OF_EARTH_KM: number = 6371.0;
  static degreesToRadians(angle: number): number {
    return (angle / 180) * Math.PI;
  }

  static getDistanceInKm(point1: number[], point2: number[]): number {
    var latitude1: number = InteractiveMapRulesService.degreesToRadians(
      point1[0]
    );
    var latitude2: number = InteractiveMapRulesService.degreesToRadians(
      point2[0]
    );
    var latitudeDifference: number =
      InteractiveMapRulesService.degreesToRadians(point2[0] - point1[0]);
    var longitudeDifference: number =
      InteractiveMapRulesService.degreesToRadians(point2[1] - point1[1]);

    // Use the haversine formula.
    var haversineOfCentralAngle: number =
      Math.pow(Math.sin(latitudeDifference / 2), 2) +
      Math.cos(latitude1) *
        Math.cos(latitude2) *
        Math.pow(Math.sin(longitudeDifference / 2), 2);

    return (
      InteractiveMapRulesService.RADIUS_OF_EARTH_KM *
      2 *
      Math.asin(Math.sqrt(haversineOfCentralAngle))
    );
  }

  Within(
    answer: InteractiveMapAnswer,
    inputs: InteractiveMapRuleInputs
  ): boolean {
    var actualDistance = InteractiveMapRulesService.getDistanceInKm(
      inputs.p,
      answer
    );
    return actualDistance <= inputs.d;
  }

  NotWithin(
    answer: InteractiveMapAnswer,
    inputs: InteractiveMapRuleInputs
  ): boolean {
    var actualDistance = InteractiveMapRulesService.getDistanceInKm(
      inputs.p,
      answer
    );
    return actualDistance > inputs.d;
  }
}