Java Point类代码示例

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Shows the callout for a given graphic
 * @param graphic the graphic selected by the user
 * @param tapLocation the location selected at a Point
 */
private void showCalloutForGraphic(Graphic graphic, Point tapLocation) {
    TextView calloutTextView = (TextView) getLayoutInflater().inflate(callout, null);
    calloutTextView.setText(graphic.getAttributes().get("Match_addr").toString());
    mCallout = mMapView.getCallout();
    mCallout.setLocation(tapLocation);
    mCallout.setContent(calloutTextView);
    mCallout.show();
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 *  Calls reverseGeocode on a Locator Task and, if there is a result, passes the result to a
 *  Callout method
 * @param point user generated map point
 * @param graphic used for marking the point on which the user touched
 */
private void reverseGeocode(final Point point, final Graphic graphic) {
    if (mLocatorTask != null) {
        final ListenableFuture<List<GeocodeResult>> results =
                mLocatorTask.reverseGeocodeAsync(point, mReverseGeocodeParameters);
        results.addDoneListener(new Runnable() {
            public void run() {
                try {
                    List<GeocodeResult> geocodeResult = results.get();
                    if (geocodeResult.size() > 0) {
                        graphic.getAttributes().put(
                                "Match_addr", geocodeResult.get(0).getLabel());
                        showCalloutForGraphic(graphic, point);
                    } else {
                        //no result was found
                        mMapView.getCallout().dismiss();
                    }
                } catch (InterruptedException | ExecutionException e) {
                    e.printStackTrace();
                }
            }
        });
    }
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Converts a given list of graphics into a list of stops
 * @param graphics
 * @return a list of stops
 */
private List stopsForGraphics(List<Graphic> graphics) {
    List<Stop> stops = new ArrayList<>();
    for (Graphic graphic : graphics) {
        Stop stop = new Stop((Point)graphic.getGeometry());
        stops.add(stop);
    }
    return stops;
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Create and add a marker to the map representing
 * the clicked location.
 * @param point - A com.esri.arcgisruntime.geometry.Point item
 */
@Override public void showClickedLocation(final Point point) {
  final Bitmap icon = BitmapFactory.decodeResource(getActivity().getResources(), R.mipmap.blue_pin);
  final BitmapDrawable drawable = new BitmapDrawable(getResources(), icon);
  final PictureMarkerSymbol markerSymbol = new PictureMarkerSymbol(drawable);
  markerSymbol.setHeight(40);
  markerSymbol.setWidth(40);
  markerSymbol.setOffsetY(markerSymbol.getHeight()/2);
  markerSymbol.loadAsync();
  markerSymbol.addDoneLoadingListener(new Runnable() {
    @Override public void run() {
      final Graphic marker = new Graphic(point, markerSymbol);
      mGraphicOverlay.getGraphics().clear();
      mGraphicOverlay.getGraphics().add(marker);
    }
  });

}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * When a user clicks a location in the map, show the progress bar and
 * create a buffered polygon around the point and query for EMU data.
 * @param point - A geolocation representing the
 *              place a user clicked on the map
 */
@Override public void setSelectedPoint(final Point point) {

  mMapView.showProgressBar("Fetching details about the location...", "Preparing Location Summary");
  mMapView.showClickedLocation(point);
  double BUFFER_SIZE = 32000;
  final Polygon polygon = getBufferPolygonForPoint(point, BUFFER_SIZE);
  final PolygonBuilder builder = new PolygonBuilder(polygon);
  final Envelope envelope = builder.getExtent();

  mDataManager.queryForEmuAtLocation(envelope, new ServiceApi.SummaryCallback() {
    @Override public void onWaterColumnsLoaded(final WaterColumn column) {

      mMapView.hideProgressBar();
      if (column == null){
        mMapView.showMessage(NO_EMU_FOUND);
        mMapView.onNoEmusFound();
      }else{
        mMapView.setSelectedPoint(point);
        mMapView.setViewpoint();
        mMapView.showClickedLocation(point);
        mMapView.showSummary(column);
      }
    }
  });
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
@Override public void getWaterProfiles(Point point) {
  mView.showProgressBar("Building scatter plots", "Preparing Water Profile");
  mDataManager.queryForEmuColumnProfile(mColumnLocation, new ServiceApi.ColumnProfileCallback() {
    @Override public void onProfileLoaded(WaterProfile waterProfile) {
      if (waterProfile.measurementCount() > 0){

        List<CombinedData> combinedDataList = new ArrayList<CombinedData>();

        combinedDataList.add(buildCombinedData(waterProfile,"TEMPERATURE"));
        combinedDataList.add(buildCombinedData(waterProfile,"SALINITY"));
        combinedDataList.add(buildCombinedData(waterProfile,"DISSOLVED_OXYGEN"));
        combinedDataList.add(buildCombinedData(waterProfile,"PHOSPHATE"));
        combinedDataList.add(buildCombinedData(waterProfile,"SILICATE"));
        combinedDataList.add(buildCombinedData(waterProfile,"NITRATE"));

        mView.showWaterProfiles(combinedDataList);
      }else{
        // Notify user
        mView.showMessage("No profile data found");
      }
      mView.hideProgressBar();
    }
  });
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Helper method that clicks on
 * an ocean location
 */
private void clickOnOceanPoint(){
  assertTrue(solo.waitForDialogToClose());
  // Near the Galapagos Islands
  Point start = new Point(-95.0974397, -0.05932, SpatialReferences.getWgs84());
  android.graphics.Point screenPoint = deriveScreenPointForLocation(start);

  solo.clickOnScreen(screenPoint.x, screenPoint.y );
  assertTrue(solo.waitForText("Location Summary"));

  android.graphics.Point p = new android.graphics.Point();
  getActivity().getWindowManager().getDefaultDisplay().getSize(p);
  int fromX, toX, fromY, toY = 0;
  fromX = p.x/2;
  toX = p.x/2;
  fromY = (p.y/2) + (p.y/3);
  toY = (p.y/2) - (p.y/3);
  solo.sleep(3000);
  // Drag UP
 solo.drag(fromX, toX, fromY, toY, 40);
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Use the location service to geocode places of interest
 * based on the map's visible area extent.
 */
@Override public final void findPlacesNearby() {
  mMapView.showProgressIndicator("Finding nearby places...");
  final Point g =  mMapView.getMapView().getVisibleArea().getExtent().getCenter();

  if ( g !=null ){
    final GeocodeParameters parameters = new GeocodeParameters();
    parameters.setMaxResults(MAX_RESULT_COUNT);
    parameters.setPreferredSearchLocation(g);
    mLocationService.getPlacesFromService(parameters, new PlacesServiceApi.PlacesServiceCallback() {
      @Override public void onLoaded(final Object places) {
        final List<Place> data = (List) places;

        // Create graphics for displaying locations in map
        mMapView.showNearbyPlaces(data);
      }
    });
  }
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Return the current extent.  If the current extent is null,
 * calculate extent based on current search results.
 * @return Envelope
 */
public final Envelope getResultEnvelope(){
  if (mCurrentEnvelope == null){
    Envelope envelope = null;
    final List<Place> places = getPlacesFromRepo();
    if (!places.isEmpty()){
      final List<Point> points = new ArrayList<>();
      for (final Place place : places){
        points.add(place.getLocation());
      }
      final Multipoint mp = new Multipoint(points);
      envelope = GeometryEngine.buffer(mp, 0.0007).getExtent();
    }
    return envelope;
  }else{
    return mCurrentEnvelope;
  }

}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Change the mission data and reset the animation.
 */
@FXML
private void changeMission() {

  // clear previous mission data
  missionData = new ArrayList<>();

  // get mission data
  String mission = missionSelector.getSelectionModel().getSelectedItem();
  missionData = getMissionData(mission);
  animationModel.setFrames(missionData.size());
  animationModel.setKeyframe(0);

  // draw mission route on mini map
  PointCollection points = new PointCollection(WGS84);
  points.addAll(missionData.stream().map(m -> (Point) m.get("POSITION")).collect(Collectors.toList()));
  Polyline route = new Polyline(points);
  routeGraphic.setGeometry(route);

  // refresh mini map zoom and show initial keyframe
  mapView.setViewpointScaleAsync(100000).addDoneListener(() -> Platform.runLater(() -> animate(0)));
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Loads the mission data from a .csv file into memory.
 *
 * @param mission .csv file name containing the mission data
 * @return ordered list of mapped key value pairs representing coordinates and rotation parameters for each step of
 * the mission
 */
private List<Map<String, Object>> getMissionData(String mission) {

  // open a file reader to the mission file that automatically closes after read
  try (BufferedReader missionFile = new BufferedReader(
      new InputStreamReader(getClass().getResourceAsStream("/csv/" + mission)))) {
    return missionFile.lines()
        //ex: -156.3666517,20.6255059,999.999908,83.77659,1.05E-09,-47.766567
        .map(l -> l.split(","))
        .map(l -> {
          // create a map of parameters (ordinates) to values
          Map<String, Object> ordinates = new HashMap<>();
          ordinates.put("POSITION", new Point(Float.valueOf(l[0]), Float.valueOf(l[1]), Float.valueOf(l[2]),
              WGS84));
          ordinates.put("HEADING", Float.valueOf(l[3]));
          ordinates.put("PITCH", Float.valueOf(l[4]));
          ordinates.put("ROLL", Float.valueOf(l[5]));
          return ordinates;
        })
        .collect(Collectors.toList());
  } catch (IOException e) {
    e.printStackTrace();
  }
  throw new RuntimeException("Error reading mission file: " + mission);
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Create red and green triangle graphics and displays them to the view.
 */
private void createGraphics() {

  // applies graphics to the view who's altitude is increased by surface's elevation
  GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
  graphicsOverlay.getSceneProperties().setSurfacePlacement(SurfacePlacement.ABSOLUTE);
  sceneView.getGraphicsOverlays().add(graphicsOverlay);

  // creating graphics for view
  redPoint = new Point(-77.69531409620706, 40.25390707699415, 900, sr);
  redSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.TRIANGLE, 0xFFFF0000, 20);
  redGraphic = new Graphic(redPoint, redSymbol);
  graphicsOverlay.getGraphics().add(redGraphic);

  greenPoint = new Point(-120.05859621653715, 38.847657048103514, 1000, sr);
  greenSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.TRIANGLE, 0xFF00FF00, 20);
  greenSymbol.setAngle(30);
  greenGraphic = new Graphic(greenPoint, greenSymbol);
  graphicsOverlay.getGraphics().add(greenGraphic);
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Converts a Point to the Cartesian coordinate system.
 * 
 * @param point point to convert
 * @return a 3D point in Cartesian coordinates
 */
private Point3D convertToCartesianPoint(Point point) {

  double x = convertToRadians(point.getY());
  double y = convertToRadians(point.getX());
  double z = point.getZ();

  // in meters
  int earthRadius = 6371000;
  double radius = z + earthRadius;
  double radCosLat = radius * Math.cos(y);

  double p1 = radCosLat * Math.sin(x);
  double p2 = radCosLat * Math.cos(x);
  double p3 = radius * Math.sin(y);

  return new Point3D(p1, p2, p3);
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Creates facilities around the San Diego region.
 * <p>
 * Facilities are created using point geometry which is then used to make graphics for the graphics overlay.
 */
private void createFacilitiesAndGraphics() {
  // List of facilities to be placed around San Diego area
  facilities = Arrays.asList(
      new Facility(new Point(-1.3042129900625112E7, 3860127.9479775648, spatialReference)),
      new Facility(new Point(-1.3042193400557665E7, 3862448.873041752, spatialReference)),
      new Facility(new Point(-1.3046882875518233E7, 3862704.9896770366, spatialReference)),
      new Facility(new Point(-1.3040539754780494E7, 3862924.5938606677, spatialReference)),
      new Facility(new Point(-1.3042571225655518E7, 3858981.773018156, spatialReference)),
      new Facility(new Point(-1.3039784633928463E7, 3856692.5980474586, spatialReference)),
      new Facility(new Point(-1.3049023883956768E7, 3861993.789732541, spatialReference)));

  // image for displaying facility
  String facilityUrl = "http://static.arcgis.com/images/Symbols/SafetyHealth/Hospital.png";
  PictureMarkerSymbol facilitySymbol = new PictureMarkerSymbol(facilityUrl);
  facilitySymbol.setHeight(30);
  facilitySymbol.setWidth(30);

  // for each facility, create a graphic and add to graphics overlay
  facilities.stream().map(f -> new Graphic(f.getGeometry(), facilitySymbol))
      .collect(Collectors.toCollection(() -> facilityGraphicsOverlay.getGraphics()));
}
 

import com.esri.arcgisruntime.geometry.Point; //导入依赖的package包/类
/**
 * Moves the tank toward the current waypoint a short distance.
 */
private void animate() {
  if (waypoint != null) {
    // get current location and distance from waypoint
    Point location = (Point) tank.getGeometry();
    GeodeticDistanceResult distance = GeometryEngine.distanceGeodetic(location, waypoint, METERS, DEGREES,
        GeodeticCurveType.GEODESIC);

    // move toward waypoint a short distance
    location = GeometryEngine.moveGeodetic(location, 1.0, METERS, distance.getAzimuth1(), DEGREES,
        GeodeticCurveType.GEODESIC);
    tank.setGeometry(location);

    // rotate toward waypoint
    double heading = (double) tank.getAttributes().get("HEADING");
    tank.getAttributes().put("HEADING", heading + ((distance.getAzimuth1() - heading) / 10));

    // reached waypoint, stop moving
    if (distance.getDistance() <= 5) {
      waypoint = null;
    }
  }
}