src.gov.nasa.worldwind.view.firstperson.FlyViewLimits Maven / Gradle / Ivy

/*
 * Copyright (C) 2012 United States Government as represented by the Administrator of the
 * National Aeronautics and Space Administration.
 * All Rights Reserved.
 */
package gov.nasa.worldwind.view.firstperson;

import gov.nasa.worldwind.geom.Position;
import gov.nasa.worldwind.globes.Globe;
import gov.nasa.worldwind.view.BasicViewPropertyLimits;

/**
 * @author jym
 * @version $Id: FlyViewLimits.java 1171 2013-02-11 21:45:02Z dcollins $
 */
public class FlyViewLimits extends BasicViewPropertyLimits
{


    public double limitEyeElevation(Position position, Globe globe)
    {

        double newElevation = position.getElevation();
        double terrainElevation = globe.getElevation(position.getLatitude(), position.getLongitude());
        double[] elevLimits = this.getEyeElevationLimits();

        if (position.getElevation() < (elevLimits[0] + terrainElevation))
        {
             newElevation = elevLimits[0]+terrainElevation;
        }
        else if (position.getElevation() > elevLimits[1] + terrainElevation)
        {
            newElevation = elevLimits[1]+terrainElevation;
        }
        return(newElevation);
    }


    public double limitEyeElevation(double elevation)
    {
        double[] elevLimits = this.getEyeElevationLimits();
        if (elevation < elevLimits[0])
        {
            return elevLimits[0];
        }
        else if (elevation > elevLimits[1])
        {
            return elevLimits[1];
        }
        return(elevation);
    }
}