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/*
 * Copyright (c) 2014, Georgia Tech Research Corporation
 * All rights reserved.
 *
 * Author: Pete Vieira <pete.vieira@gatech.edu>
 * Date: Feb 2014
 *
 * Humanoid Robotics Lab      Georgia Institute of Technology
 * Director: Mike Stilman     http://www.golems.org
 *
 *
 * This file is provided under the following "BSD-style" License:
 *   Redistribution and use in source and binary forms, with or
 *   without modification, are permitted provided that the following
 *   conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *
 *   * Neither the name of the Humanoid Robotics Lab nor the names of
 *     its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written
 *     permission
 *
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 *   CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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 */

#ifndef GRID_H
#define GRID_H

// OpenSceneGraph includes
#include <osg/Geometry>

namespace osgGolems {

class Grid : public osg::Geometry
{
public:

    Grid(uint width, uint depth, uint gridSize, const osg::Vec4& color);

    ~Grid();

    void setGridColor(const osg::Vec4& color);

protected:

    void _createVertices(uint width, uint depth, uint gridSize);

    void _drawGrid(const osg::Vec4& color);

    uint _makeEven(uint num);

    osg::ref_ptr<osg::Vec3Array> _verts;

    osg::ref_ptr<osg::Vec4Array> _colors;

    static const uint maxLength = 500;

}; // end class Grid

} // end namespace osgGolems

#endif // GRID_H