Example usage for java.awt Polygon getBoundingBox

Introduction

In this page you can find the example usage for java.awt Polygon getBoundingBox.

Prototype

@Deprecated
public Rectangle getBoundingBox() 

Source Link

Document

Returns the bounds of this Polygon .

Usage

From source file:de.fhg.igd.mapviewer.waypoints.CustomWaypointPainter.java

/**
 * Find the way-points in a given polygon
 * //from   w  ww.  j  a  va 2 s.co m
 * @param poly the polygon
 * @return the way-points in the polygon area
 */
public Set<W> findWaypoints(final Polygon poly) {
    Rectangle viewPort = getMapKit().getMainMap().getViewportBounds();

    final int zoom = getMapKit().getMainMap().getZoom();
    final PixelConverter converter = getMapKit().getMainMap().getTileFactory().getTileProvider().getConverter();

    de.fhg.igd.geom.Point2D[] points = new de.fhg.igd.geom.Point2D[poly.npoints];

    // create a metamodel polygon
    for (int i = 0; i < poly.npoints; i++) {
        int worldX = viewPort.x + poly.xpoints[i];
        int worldY = viewPort.y + poly.ypoints[i];

        // convert to geo position
        GeoPosition pos = converter.pixelToGeo(new Point(worldX, worldY), zoom);

        // convert to common CRS
        try {
            pos = GeotoolsConverter.getInstance().convert(pos, SelectableWaypoint.COMMON_EPSG);
        } catch (IllegalGeoPositionException e) {
            log.warn("Error converting polygon point for query"); //$NON-NLS-1$
            return new HashSet<W>();
        }

        points[i] = new de.fhg.igd.geom.Point2D(pos.getX(), pos.getY());
    }

    final de.fhg.igd.geom.shape.Polygon verifyPolygon = new de.fhg.igd.geom.shape.Polygon(points);

    // we need a 3D search bounding box for the R-Tree
    BoundingBox searchBox = verifyPolygon.getBoundingBox();
    searchBox.setMinZ(-2.0);
    searchBox.setMaxZ(2.0);

    poly.translate(viewPort.x, viewPort.y);
    try {
        Set<W> wps = waypoints.query(searchBox, new Verifier<W, BoundingBox>() {

            @Override
            public boolean verify(W wp, BoundingBox second) {
                try {
                    Point2D wpPixel = converter.geoToPixel(wp.getPosition(), zoom);
                    int dx = (int) wpPixel.getX();
                    int dy = (int) wpPixel.getY();

                    poly.translate(-dx, -dy);
                    try {
                        Area area = wp.getMarker().getArea(zoom);
                        if (area != null) {
                            return area.containedIn(poly);
                        } else {
                            // something that has not been painted yet may
                            // not be selected
                            return false;
                        }
                    } finally {
                        poly.translate(dx, dy);
                    }
                } catch (IllegalGeoPositionException e) {
                    log.warn("Could not convert waypoint position to pixel", e);
                    // fall back to simple method
                    return verifyPolygon.contains(wp.getBoundingBox().toExtent());
                }
            }

        });

        if (wps == null) {
            return new HashSet<W>();
        } else {
            return wps;
        }
    } finally {
        poly.translate(-viewPort.x, -viewPort.y);
    }
}

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