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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.ogc.collada;

import java.util.*;

/**
 * Represents the COLLADA mesh element and provides access to its contents.
 *
 * @author pabercrombie
 * @version $Id: ColladaMesh.java 654 2012-06-25 04:15:52Z pabercrombie $
 */
public class ColladaMesh extends ColladaAbstractObject
{
    protected List sources = new ArrayList();
    protected List vertices = new ArrayList();

    // Most meshes contain either triangles or lines. Lazily allocate these lists.
    protected List triangles;
    protected List lines;

    public ColladaMesh(String ns)
    {
        super(ns);
    }

    public List getSources()
    {
        return this.sources;
    }

    public List getTriangles()
    {
        return this.triangles != null ? this.triangles : Collections.emptyList();
    }

    public List getLines()
    {
        return this.lines != null ? this.lines : Collections.emptyList();
    }

    public List getVertices()
    {
        return this.vertices;
    }

    @Override
    public void setField(String keyName, Object value)
    {
        if (keyName.equals("vertices"))
        {
            this.vertices.add((ColladaVertices) value);
        }
        else if (keyName.equals("source"))
        {
            this.sources.add((ColladaSource) value);
        }
        else if (keyName.equals("triangles"))
        {
            if (this.triangles == null)
                this.triangles = new ArrayList();

            this.triangles.add((ColladaTriangles) value);
        }
        else if (keyName.equals("lines"))
        {
            if (this.lines == null)
                this.lines = new ArrayList();

            this.lines.add((ColladaLines) value);
        }
        else
        {
            super.setField(keyName, value);
        }
    }
}