OSMRoadInfo.java

package maps.convert.osm2gml;

import rescuecore2.misc.geometry.Point2D;

import maps.osm.OSMNode;

import java.awt.geom.Area;
import java.awt.geom.Path2D;

import java.util.List;
import java.util.ArrayList;

/**
   Information about an OSM road.
*/
public class OSMRoadInfo implements OSMShape {
    private OSMNode from;
    private OSMNode to;
    private Point2D fromLeft;
    private Point2D toLeft;
    private Point2D fromRight;
    private Point2D toRight;
    private Area area;

    /**
       Create an OSMRoadInfo between two nodes.
       @param from The first OSMNode.
       @param to The second OSMNode.
    */
    public OSMRoadInfo(OSMNode from, OSMNode to) {
        this.from = from;
        this.to = to;
        area = null;
    }

    /**
       Get the "from" node.
       @return The "from" node.
    */
    public OSMNode getFrom() {
        return from;
    }

    /**
       Get the "to" node.
       @return The "to" node.
    */
    public OSMNode getTo() {
        return to;
    }

    /**
       Set the point that is at the left side of this road at the "from" end.
       @param p The from-left corner point.
    */
    public void setFromLeft(Point2D p) {
        fromLeft = p;
        area = null;
    }

    /**
       Set the point that is at the right side of this road at the "from" end.
       @param p The from-right corner point.
    */
    public void setFromRight(Point2D p) {
        fromRight = p;
        area = null;
    }

    /**
       Set the point that is at the left side of this road at the "to" end.
       @param p The to-left corner point.
    */
    public void setToLeft(Point2D p) {
        toLeft = p;
        area = null;
    }

    /**
       Set the point that is at the right side of this road at the "to" end.
       @param p The to-right corner point.
    */
    public void setToRight(Point2D p) {
        toRight = p;
        area = null;
    }

    /**
       Get the point that is at the left side of this road at the "from" end.
       @return The from-left corner point.
    */
    public Point2D getFromLeft() {
        return fromLeft;
    }

    /**
       Get the point that is at the right side of this road at the "from" end.
       @return The from-right corner point.
    */
    public Point2D getFromRight() {
        return fromRight;
    }

    /**
       Get the point that is at the left side of this road at the "to" end.
       @return The to-left corner point.
    */
    public Point2D getToLeft() {
        return toLeft;
    }

    /**
       Get the point that is at the right side of this road at the "to" end.
       @return The to-right corner point.
    */
    public Point2D getToRight() {
        return toRight;
    }

    @Override
    public Area getArea() {
        if (area == null) {
            if (fromLeft == null || fromRight == null || toLeft == null || toRight == null) {
                return null;
            }
            Path2D.Double path = new Path2D.Double();
            path.moveTo(fromLeft.getX(), fromLeft.getY());
            path.lineTo(fromRight.getX(), fromRight.getY());
            path.lineTo(toRight.getX(), toRight.getY());
            path.lineTo(toLeft.getX(), toLeft.getY());
            path.closePath();
            area = new Area(path.createTransformedShape(null));
        }
        return area;
    }

    @Override
    public List<Point2D> getVertices() {
        List<Point2D> result = new ArrayList<Point2D>();
        result.add(fromLeft);
        result.add(fromRight);
        result.add(toRight);
        result.add(toLeft);
        return result;
    }

    @Override
    public String toString() {
        StringBuilder result = new StringBuilder();
        result.append("RoadInfo [");
        result.append(fromLeft);
        result.append(", ");
        result.append(fromRight);
        result.append(", ");
        result.append(toRight);
        result.append(", ");
        result.append(toLeft);
        result.append("]");
        return result.toString();
    }
}