package seng302;

/**
 * Created by cbt24 on 15/03/17.
 */
public class RaceMap {
    private final double x1;
    private final double x2;
    private final double y1;
    private final double y2;
    private int width, height;

    /**
     * Constructor Method.
     *
     * @param x1     Longitude of the top left point.
     * @param y1     Latitude of the top left point.
     * @param x2     Longitude of the top right point.
     * @param y2     Latitude of the top right point.
     * @param width  width that the Canvas the race is to be drawn on is.
     * @param height height that the Canvas the race is to be drawn on is.
     */
    public RaceMap(double y1, double x1, double y2, double x2, int height, int width) {
        this.x1 = x1;
        this.x2 = x2;
        this.y1 = y1;
        this.y2 = y2;
        this.width = width;
        this.height = height;
    }

    /**
     * Converts GPS coordinates to coordinates for container
     *
     * @param lat GPS latitude
     * @param lon GPS longitude
     * @return GraphCoordinate (pair of doubles)
     * @see GraphCoordinate
     */
    private GraphCoordinate convertGPS(double lat, double lon) {
        int difference = Math.abs(width - height);
        int size = width;
        if (width > height) {
            size = height;
            return new GraphCoordinate((int) ((size * (lon - x1) / (x2 - x1)) + difference / 2), (int) (size - (size * (lat - y1) / (y2 - y1))));
        } else {
            return new GraphCoordinate((int) (size * (lon - x1) / (x2 - x1)), (int) ((size - (size * (lat - y1) / (y2 - y1))) + difference / 2));
        }

        //return new GraphCoordinate((int) (width * (lon - x1) / (x2 - x1)), (int) (height - (height * (lat - y1) / (y2 - y1))));
    }

    /**
     * Converts the GPS Coordinate to GraphCoordinates
     *
     * @param coordinate GPSCoordinate representation of Latitude and Longitude.
     * @return GraphCoordinate that the GPS is coordinates are to be displayed on the map.
     * @see GraphCoordinate
     * @see GPSCoordinate
     */
    public GraphCoordinate convertGPS(GPSCoordinate coordinate) {
        return convertGPS(coordinate.getLatitude(), coordinate.getLongitude());
    }

    public void setWidth(int width) {
        this.width = width;
    }

    public void setHeight(int height) {
        this.height = height;
    }
}