source: josm/trunk/src/org/openstreetmap/josm/data/osm/INode.java@ 14120

// License: GPL. For details, see LICENSE file.
package org.openstreetmap.josm.data.osm;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.coor.EastNorth;
import org.openstreetmap.josm.data.coor.ILatLon;
import org.openstreetmap.josm.data.coor.LatLon;
import org.openstreetmap.josm.data.projection.ProjectionRegistry;

/**
 * INode captures the common functions of {@link Node} and {@link NodeData}.
 * @since 4098
 */
public interface INode extends IPrimitive, ILatLon {

    /**
     * Returns lat/lon coordinates of this node.
     * @return lat/lon coordinates of this node
     */
    LatLon getCoor();

    /**
     * Sets lat/lon coordinates of this node.
     * @param coor lat/lon coordinates of this node
     */
    void setCoor(LatLon coor);

    /**
     * Replies the projected east/north coordinates.
     * <p>
     * Uses the {@link Main#getProjection() global projection} to project the lat/lon-coordinates.
     * <p>
     * @return the east north coordinates or {@code null} if {@link #isLatLonKnown()} is false.
     * @since 13666
     */
    default EastNorth getEastNorth() {
        return getEastNorth(ProjectionRegistry.getProjection());
    }

    /**
     * Sets east/north coordinates of this node.
     * @param eastNorth east/north coordinates of this node
     */
    void setEastNorth(EastNorth eastNorth);

    /**
     * Check whether this node connects 2 ways.
     *
     * @return true if isReferredByWays(2) returns true
     * @see #isReferredByWays(int)
     * @since 13669
     */
    default boolean isConnectionNode() {
        return isReferredByWays(2);
    }

    /**
     * Return true, if this primitive is referred by at least n ways
     * @param n Minimal number of ways to return true. Must be positive
     * @return {@code true} if this primitive is referred by at least n ways
     * @since 13669
     */
    boolean isReferredByWays(int n);

    @Override
    default int compareTo(IPrimitive o) {
        return o instanceof INode ? Long.compare(getUniqueId(), o.getUniqueId()) : 1;
    }

    @Override
    default String getDisplayName(NameFormatter formatter) {
        return formatter.format(this);
    }
}