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Marker clustering improvements #312

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This commit is contained in:
Emux
2017-03-04 17:17:24 +02:00
parent 4b30ca3242
commit 28961caa79
4 changed files with 141 additions and 49 deletions
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80
vtm-android-example/src/org/oscim/android/test/ClusterMarkerOverlayActivity.java
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@@ -15,70 +15,76 @@
*/
package org.oscim.android.test;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import org.oscim.android.canvas.AndroidBitmap;
import org.oscim.backend.canvas.Bitmap;
import org.oscim.backend.canvas.Color;
import org.oscim.core.GeoPoint;
import org.oscim.core.MapPosition;
import org.oscim.layers.TileGridLayer;
import org.oscim.layers.marker.ClusterMarkerRenderer;
import org.oscim.layers.marker.ItemizedLayer;
import org.oscim.layers.marker.MarkerItem;
import org.oscim.layers.marker.MarkerSymbol;
import org.oscim.layers.tile.buildings.BuildingLayer;
import org.oscim.layers.tile.vector.VectorTileLayer;
import org.oscim.layers.tile.vector.labeling.LabelLayer;
import org.oscim.theme.VtmThemes;
import org.oscim.tiling.source.oscimap4.OSciMap4TileSource;
import java.util.ArrayList;
import java.util.List;
public class ClusterMarkerOverlayActivity extends BaseMapActivity {
import static org.oscim.android.canvas.AndroidGraphics.drawableToBitmap;
public class ClusterMarkerOverlayActivity extends MarkerOverlayActivity {
private static final int COUNT = 5;
private static final float STEP = 100f / 110000f; // roughly 100 meters
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
void createLayers() {
// Map events receiver
mMap.layers().add(new MapEventsReceiver(mMap));
VectorTileLayer l = mMap.setBaseMap(new OSciMap4TileSource());
mMap.layers().add(new BuildingLayer(mMap, l));
mMap.layers().add(new LabelLayer(mMap, l));
mMap.setTheme(VtmThemes.DEFAULT);
MapPosition pos = new MapPosition();
mMap.getMapPosition(pos);
pos.setZoomLevel(2);
mMap.setMapPosition(pos);
Bitmap bitmapPoi = drawableToBitmap(getResources(), R.drawable.marker_poi);
MarkerSymbol symbol;
if (BILLBOARDS)
symbol = new MarkerSymbol(bitmapPoi, MarkerSymbol.HotspotPlace.BOTTOM_CENTER);
else
symbol = new MarkerSymbol(bitmapPoi, MarkerSymbol.HotspotPlace.CENTER, false);
ItemizedLayer<MarkerItem> layer = new ItemizedLayer<>(
mMarkerLayer = new ItemizedLayer<>(
mMap,
ClusterMarkerRenderer.factory(null, new ClusterMarkerRenderer.ClusterStyle(0xffffffff, 0xff123456))
);
// add it top the map
mMap.layers().add(layer);
// create a symbol, for simplicity we will use this symbol for all created markers
MarkerSymbol symbol = new MarkerSymbol(
new AndroidBitmap(((BitmapDrawable) (getResources().getDrawable(R.drawable.marker_poi))).getBitmap()),
MarkerSymbol.HotspotPlace.CENTER
);
// create some markers spaced STEP degrees
GeoPoint center = pos.getGeoPoint();
ArrayList<MarkerItem> list = new ArrayList<>();
new ArrayList<MarkerItem>(),
ClusterMarkerRenderer.factory(symbol, new ClusterMarkerRenderer.ClusterStyle(Color.WHITE, Color.BLUE)),
this);
mMap.layers().add(mMarkerLayer);
// Create some markers spaced STEP degrees
List<MarkerItem> pts = new ArrayList<>();
GeoPoint center = mMap.getMapPosition().getGeoPoint();
for (int x = -COUNT; x < COUNT; x++) {
for (int y = -COUNT; y < COUNT; y++) {
double random = STEP * Math.random() * 2;
MarkerItem item = new MarkerItem(
"Demo Marker " + ((x * COUNT) + y),
"Your typical marker in your typical map",
MarkerItem item = new MarkerItem(y + ", " + x, "",
new GeoPoint(center.getLatitude() + y * STEP + random, center.getLongitude() + x * STEP + random)
);
item.setMarker(symbol);
list.add(item);
pts.add(item);
}
}
mMarkerLayer.addItems(pts);
// add'em all at once
layer.addItems(list);
mMap.layers().add(new TileGridLayer(mMap, getResources().getDisplayMetrics().density));
}
@Override
protected void onResume() {
super.onResume();
/* ignore saved position */
mMap.setMapPosition(53.08, 8.83, 1 << 15);
}
}