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/* Copyright 2018 Esri
*
* 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.
*
*/
package com.esri.arcgisruntime.sample.densifygeneralize;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.SeekBar;
import androidx.appcompat.app.AppCompatActivity;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.geometry.GeometryEngine;
import com.esri.arcgisruntime.geometry.Multipoint;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.Polyline;
import com.esri.arcgisruntime.geometry.SpatialReference;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.Basemap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.symbology.SimpleLineSymbol;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
public class MainActivity extends AppCompatActivity {
private MapView mMapView;
private SeekBar mMaxSegmentLengthSlider;
private SeekBar mMaxDeviationSlider;
private CheckBox mDensifyCheckBox;
private CheckBox mGeneralizeCheckBox;
private Graphic mResultPointGraphic;
private Graphic mResultPolylineGraphic;
private Polyline mOriginalPolyline;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// authentication with an API key or named user is required to access basemaps and other
// location services
ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY);
// inflate MapView from layout
mMapView = findViewById(R.id.mapView);
// create a map with a basemap
ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_STREETS_NIGHT);
// set the map to be displayed in this view
mMapView.setMap(map);
// inflate views from layout
mMaxSegmentLengthSlider = findViewById(R.id.maxSegmentLengthBar);
mMaxDeviationSlider = findViewById(R.id.maxDeviationBar);
mDensifyCheckBox = findViewById(R.id.densifyCheckBox);
mGeneralizeCheckBox = findViewById(R.id.generalizeCheckBox);
// create graphics overlay
GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
mMapView.getGraphicsOverlays().add(graphicsOverlay);
// create some points along a river for the original geometry
PointCollection points = createShipPoints();
// show the original points as red dots on the map
Multipoint originalMultipoint = new Multipoint(points);
Graphic originalPointsGraphic = new Graphic(originalMultipoint,
new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, 0xFFFF0000, 7));
graphicsOverlay.getGraphics().add(originalPointsGraphic);
// show a dotted red line connecting the original points
mOriginalPolyline = new Polyline(points);
Graphic originalPolylineGraphic = new Graphic(mOriginalPolyline, new SimpleLineSymbol(SimpleLineSymbol.Style.DOT,
0xFFFF0000, 3));
graphicsOverlay.getGraphics().add(originalPolylineGraphic);
// show the result (densified and generalized) point as magenta dots on the map
mResultPointGraphic = new Graphic();
mResultPointGraphic.setSymbol(new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, 0xFFFF00FF, 7));
graphicsOverlay.getGraphics().add(mResultPointGraphic);
// connect the results points with a magenta line
mResultPolylineGraphic = new Graphic();
mResultPolylineGraphic.setSymbol(new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFFFF00FF, 3));
graphicsOverlay.getGraphics().add(mResultPolylineGraphic);
mMapView.setViewpointGeometryAsync(mOriginalPolyline.getExtent(), 100);
// set defaults
mMaxDeviationSlider.setMax(249);
mMaxSegmentLengthSlider.setMax(400);
mGeneralizeCheckBox.setChecked(true);
mDensifyCheckBox.setChecked(true);
setListeners();
updateGeometry();
}
/**
* Adds listeners to both seek bars and both check boxes.
*/
private void setListeners() {
mMaxDeviationSlider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
updateGeometry();
}
@Override public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override public void onStopTrackingTouch(SeekBar seekBar) {
}
});
mMaxSegmentLengthSlider.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
updateGeometry();
}
@Override public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override public void onStopTrackingTouch(SeekBar seekBar) {
}
});
mGeneralizeCheckBox.setOnClickListener(v -> updateGeometry());
mDensifyCheckBox.setOnClickListener(v -> updateGeometry());
}
/**
* Called when any of the densify/generalize option values are changed. Applies the densify and generalize
* operations to the original polyline and updates the result graphics with the result geometry.
*/
private void updateGeometry() {
Polyline tempPolyline = mOriginalPolyline;
if (mGeneralizeCheckBox.isChecked()) {
tempPolyline = (Polyline) GeometryEngine.generalize(tempPolyline, mMaxDeviationSlider.getProgress() + 1,
true);
}
if (mDensifyCheckBox.isChecked()) {
tempPolyline = (Polyline) GeometryEngine.densify(tempPolyline, mMaxSegmentLengthSlider.getProgress() + 100);
}
mResultPolylineGraphic.setGeometry(tempPolyline);
Multipoint multipoint = new Multipoint(tempPolyline.getParts().getPartsAsPoints());
mResultPointGraphic.setGeometry(multipoint);
}
/**
* Creates a collection of points along the Willamette River in Portland, OR.
*
* @return points
*/
private static PointCollection createShipPoints() {
PointCollection points = new PointCollection(SpatialReference.create(32126));
points.add(new Point(2330611.130549, 202360.002957, 0.000000));
points.add(new Point(2330583.834672, 202525.984012, 0.000000));
points.add(new Point(2330574.164902, 202691.488009, 0.000000));
points.add(new Point(2330689.292623, 203170.045888, 0.000000));
points.add(new Point(2330696.773344, 203317.495798, 0.000000));
points.add(new Point(2330691.419723, 203380.917080, 0.000000));
points.add(new Point(2330435.065296, 203816.662457, 0.000000));
points.add(new Point(2330369.500800, 204329.861789, 0.000000));
points.add(new Point(2330400.929891, 204712.129673, 0.000000));
points.add(new Point(2330484.300447, 204927.797132, 0.000000));
points.add(new Point(2330514.469919, 205000.792463, 0.000000));
points.add(new Point(2330638.099138, 205271.601116, 0.000000));
points.add(new Point(2330725.315888, 205631.231308, 0.000000));
points.add(new Point(2330755.640702, 206433.354860, 0.000000));
points.add(new Point(2330680.644719, 206660.240923, 0.000000));
points.add(new Point(2330386.957926, 207340.947204, 0.000000));
points.add(new Point(2330485.861737, 207742.298501, 0.000000));
return points;
}
@Override
protected void onPause() {
super.onPause();
mMapView.pause();
}
@Override
protected void onResume() {
super.onResume();
mMapView.resume();
}
@Override
protected void onDestroy() {
super.onDestroy();
mMapView.dispose();
}
}