Example usage for com.google.common.geometry S2LatLngRect contains

Introduction

In this page you can find the example usage for com.google.common.geometry S2LatLngRect contains.

Prototype

public boolean contains(S2Point p) 

Source Link

Document

The point 'p' does not need to be normalized.

Usage

From source file:com.grublr.geo.GeoDataManager.java

/**
 * Filter out any points outside of the queried area from the input list.
 * //from   www. j  av a  2s  .com
 * @param list
 *            List of items return by Amazon DynamoDB. It may contains points outside of the actual area queried.
 * 
 * @param latLngRect
 *            Queried area. Any points outside of this area need to be discarded.
 * 
 * @return List of items within the queried area.
 */
private List<Map<String, AttributeValue>> filter(List<Map<String, AttributeValue>> list,
        GeoQueryRequest geoQueryRequest) {

    List<Map<String, AttributeValue>> result = new ArrayList<Map<String, AttributeValue>>();

    S2LatLngRect latLngRect = null;
    S2LatLng centerLatLng = null;
    double radiusInMeter = 0;
    if (geoQueryRequest instanceof QueryRectangleRequest) {
        latLngRect = S2Util.getBoundingLatLngRect(geoQueryRequest);
    } else if (geoQueryRequest instanceof QueryRadiusRequest) {
        GeoPoint centerPoint = ((QueryRadiusRequest) geoQueryRequest).getCenterPoint();
        centerLatLng = S2LatLng.fromDegrees(centerPoint.getLatitude(), centerPoint.getLongitude());

        radiusInMeter = ((QueryRadiusRequest) geoQueryRequest).getRadiusInMeter();
    }

    for (Map<String, AttributeValue> item : list) {
        String geoJson = item.get(config.getGeoJsonAttributeName()).getS();
        GeoPoint geoPoint = GeoJsonMapper.geoPointFromString(geoJson);

        S2LatLng latLng = S2LatLng.fromDegrees(geoPoint.getLatitude(), geoPoint.getLongitude());
        if (latLngRect != null && latLngRect.contains(latLng)) {
            result.add(item);
        } else if (centerLatLng != null && radiusInMeter > 0
                && centerLatLng.getEarthDistance(latLng) <= radiusInMeter) {
            result.add(item);
        }
    }

    return result;
}

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