package de.fhpotsdam.unfolding.examples.marker.advanced;
import java.util.ArrayList;
import java.util.List;
import processing.core.PApplet;
import de.fhpotsdam.unfolding.UnfoldingMap;
import de.fhpotsdam.unfolding.data.Feature;
import de.fhpotsdam.unfolding.data.GeoJSONReader;
import de.fhpotsdam.unfolding.data.MarkerFactory;
import de.fhpotsdam.unfolding.geo.Location;
import de.fhpotsdam.unfolding.marker.Marker;
import de.fhpotsdam.unfolding.utils.MapUtils;
/**
* Advanced example to demonstrate custom nearest marker test.
*
* getNearestMarker(x,y) returns the closest marker to the given screen position. Using
* DistancePerLocationPolygonMarker, i.e. instead of the default implementation of using the centroid of the polygon,
* this tests all vertices of the polygon.
*/
@SuppressWarnings("serial")
public class GetNearestMultiMarkerApp extends PApplet {
UnfoldingMap map;
List<Marker> countryMarkers = new ArrayList<Marker>();
public void setup() {
size(800, 600, OPENGL);
map = new UnfoldingMap(this);
map.zoomToLevel(2);
map.panTo(new Location(58.631217f, -101.601562f));
MapUtils.createDefaultEventDispatcher(this, map);
initPolygons();
}
public void draw() {
background(240);
map.draw();
}
public void mouseMoved() {
Marker marker = map.getDefaultMarkerManager().getNearestMarker(mouseX, mouseY);
if (marker != null) {
for (Marker countryMarker : countryMarkers) {
countryMarker.setSelected(countryMarker == marker);
}
}
}
private void initPolygons() {
List<Feature> countries = GeoJSONReader.loadData(this, "data/countries.geo.json");
List<Feature> selectedCountries = new ArrayList<Feature>();
for (Feature feature : countries) {
if (feature.getId().equalsIgnoreCase("CAN") || feature.getId().equalsIgnoreCase("USA")) {
selectedCountries.add(feature);
}
}
MarkerFactory markerFactory = new MarkerFactory();
markerFactory.setPolygonClass(DistancePerLocationPolygonMarker.class);
countryMarkers = markerFactory.createMarkers(selectedCountries);
map.addMarkers(countryMarkers);
}
}