src.gov.nasa.worldwind.symbology.milstd2525.graphics.areas.Dummy Maven / Gradle / Ivy

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World Wind is a collection of components that interactively display 3D geographic information within Java applications or applets.

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/*
 * 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.symbology.milstd2525.graphics.areas;

import gov.nasa.worldwind.WorldWind;
import gov.nasa.worldwind.avlist.AVKey;
import gov.nasa.worldwind.geom.Position;
import gov.nasa.worldwind.render.*;
import gov.nasa.worldwind.symbology.milstd2525.AbstractMilStd2525TacticalGraphic;
import gov.nasa.worldwind.symbology.milstd2525.graphics.TacGrpSidc;
import gov.nasa.worldwind.util.Logging;

import java.util.*;

/**
 * Implementation of the Dummy graphic (hierarchy 2.X.2.3.1, SIDC: G*GPPD----****X).
 *
 * @author pabercrombie
 * @version $Id: Dummy.java 1171 2013-02-11 21:45:02Z dcollins $
 */
public class Dummy extends AbstractMilStd2525TacticalGraphic
{
    protected Path path;

    /**
     * Indicates the graphics supported by this class.
     *
     * @return List of masked SIDC strings that identify graphics that this class supports.
     */
    public static List getSupportedGraphics()
    {
        return Arrays.asList(TacGrpSidc.C2GM_DCPN_DMY);
    }

    public Dummy(String sidc)
    {
        super(sidc);
        this.path = this.createPath();
        this.path.setAttributes(this.getActiveShapeAttributes());
    }

    /** {@inheritDoc} */
    protected void doRenderGraphic(DrawContext dc)
    {
        this.path.render(dc);
    }

    /** {@inheritDoc} */
    protected void applyDelegateOwner(Object owner)
    {
        this.path.setDelegateOwner(owner);
    }

    /**
     * {@inheritDoc}
     * 
     * The dummy graphic requires exactly three control points. Any positions beyond the first three will be ignored.
     *
     * @throws IllegalArgumentException if less than three control points are provided.
     */
    public void setPositions(Iterable positions)
    {
        if (positions == null)
        {
            String message = Logging.getMessage("nullValue.PositionsListIsNull");
            Logging.logger().severe(message);
            throw new IllegalArgumentException(message);
        }

        try
        {
            Iterator iterator = positions.iterator();
            Position pt1 = iterator.next();
            Position pt2 = iterator.next();
            Position pt3 = iterator.next();

            this.path.setPositions(Arrays.asList(pt2, pt1, pt3));
        }
        catch (NoSuchElementException e)
        {
            String message = Logging.getMessage("generic.InsufficientPositions");
            Logging.logger().severe(message);
            throw new IllegalArgumentException(message);
        }
    }

    /** {@inheritDoc} */
    public Iterable getPositions()
    {
        return this.path.getPositions();
    }

    /** {@inheritDoc} */
    public Position getReferencePosition()
    {
        return this.path.getReferencePosition();
    }

    @Override
    protected void applyDefaultAttributes(ShapeAttributes attributes)
    {
        super.applyDefaultAttributes(attributes);

        attributes.setOutlineWidth(2.0);
        attributes.setOutlineStippleFactor(15);
        attributes.setOutlineStipplePattern((short) 0xAAAA);
    }

    protected Path createPath()
    {
        Path path = new Path();
        path.setFollowTerrain(true);
        path.setPathType(AVKey.GREAT_CIRCLE);
        path.setAltitudeMode(WorldWind.CLAMP_TO_GROUND);
        path.setDelegateOwner(this.getActiveDelegateOwner());
        return path;
    }
}