Example usage for com.google.gwt.maps.client.overlay Polygon Polygon

Introduction

In this page you can find the example usage for com.google.gwt.maps.client.overlay Polygon Polygon.

Prototype

public Polygon(LatLng[] points, String strokeColor, int strokeWeight, double strokeOpacity, String fillColor,
        double fillOpacity) 

Source Link

Document

Create a polygon from an array of points, specifying optional parameters.

Usage

From source file:com.google.gwt.maps.sample.hellomaps.client.DrawingOverlayDemo.java

License:Apache License

private void createPolygon() {
    PolyStyleOptions style = PolyStyleOptions.newInstance(color, weight, opacity);

    final Polygon poly = new Polygon(new LatLng[0], color, weight, opacity, color, fillFlag ? .7 : 0.0);
    lastPolygon = poly;/* ww w .ja v a 2  s.co  m*/
    map.addOverlay(poly);
    poly.setDrawingEnabled();
    poly.setStrokeStyle(style);
    message2.setText("");
    poly.addPolygonLineUpdatedHandler(new PolygonLineUpdatedHandler() {

        public void onUpdate(PolygonLineUpdatedEvent event) {
            message2.setText(message2.getText() + " : Polygon Updated");
        }
    });

    poly.addPolygonCancelLineHandler(new PolygonCancelLineHandler() {

        public void onCancel(PolygonCancelLineEvent event) {
            message2.setText(message2.getText() + " : Polygon Cancelled");
        }
    });

    poly.addPolygonEndLineHandler(new PolygonEndLineHandler() {

        public void onEnd(PolygonEndLineEvent event) {
            message2.setText(message2.getText() + " : Polygon End at " + event.getLatLng() + ".  Bounds="
                    + poly.getBounds().getNorthEast() + "," + poly.getBounds().getSouthWest() + " area="
                    + poly.getArea() + "m");
        }
    });
}

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From source file:com.google.gwt.maps.sample.hellomaps.client.StreetviewDemo.java

License:Apache License

private void updatePolyline() {
    if (viewPolygon != null) {
        map.removeOverlay(viewPolygon);/*from  ww  w  .  java 2s.  c om*/
    }

    // Some simple math to calculate viewPolygon

    double yaw = currentPov.getYaw();
    double distanceFactor = Math.cos(Math.toRadians(currentPov.getPitch())) * 0.0015 + 0.0005;
    double zoomFactor = currentPov.getZoom() * 0.7 + 1;

    LatLng[] points = new LatLng[11];
    points[0] = points[10] = currentLatLng;
    for (int i = 1; i < 10; i++) {
        double angle = Math.toRadians(yaw + (i - 5) * 7d / zoomFactor);
        points[i] = LatLng.newInstance(currentLatLng.getLatitude() + Math.cos(angle) * distanceFactor,
                currentLatLng.getLongitude() + Math.sin(angle) * distanceFactor);
    }

    viewPolygon = new Polygon(points, "blue", 1, 0.5, "blue", 0.15);
    map.addOverlay(viewPolygon);
}

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From source file:es.upm.fi.dia.oeg.map4rdf.client.widget.mapcontrol.StatisticsMapControl.java

License:Open Source License

private void drawCircleFromRadius(LatLng center, double radius, int nbOfPoints) {

    LatLngBounds bounds = LatLngBounds.newInstance();
    LatLng[] circlePoints = new LatLng[nbOfPoints];

    double EARTH_RADIUS = 6371000;
    double d = radius / EARTH_RADIUS;
    double lat1 = Math.toRadians(center.getLatitude());
    double lng1 = Math.toRadians(center.getLongitude());

    double a = 0;
    double step = 360.0 / nbOfPoints;
    for (int i = 0; i < nbOfPoints; i++) {
        double tc = Math.toRadians(a);
        double lat2 = Math.asin(Math.sin(lat1) * Math.cos(d) + Math.cos(lat1) * Math.sin(d) * Math.cos(tc));
        double lng2 = lng1 + Math.atan2(Math.sin(tc) * Math.sin(d) * Math.cos(lat1),
                Math.cos(d) - Math.sin(lat1) * Math.sin(lat2));
        LatLng point = LatLng.newInstance(Math.toDegrees(lat2), Math.toDegrees(lng2));
        circlePoints[i] = point;/*from www .  j a va  2s .  c om*/
        bounds.extend(point);
        a += step;
    }

    Polygon circle = new Polygon(circlePoints, "white", 0, 0, "green", 0.4);

    addOverlay(circle);
}

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