ZoneData.hpp

/*
 * The big star catalogue extension to Stellarium:
 * Author and Copyright: Johannes Gajdosik, 2006, 2007
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
 */

#ifndef _ZONEDATA_HPP_
#define _ZONEDATA_HPP_

// just for Vect3d.
// Take any Vector class instead, if you want to use the star feature in a
// different context.
#include "VecMath.hpp"
#include "StelObjectType.hpp"

class StelObject;

struct ZoneData
{
    int getNrOfStars() const
    {
        return size;
    }
    Vec3f center;   // Normalized center of the triangle
    Vec3f axis0;    // Normalized direction vector of axis 0 (use for storing stars position in 2D relative to this axis)
    Vec3f axis1;    // Normalized direction vector of axis 0 (use for storing stars position in 2D relative to this axis)
    int size;       // Number of stars in the stars array
    void *stars;
};

template <class Star>
struct SpecialZoneData : public ZoneData
{
    StelObjectP createStelObject(const Star *s) const
    {
        return s->createStelObject(*this);
    }

    Star *getStars(void) const
    {
        return reinterpret_cast<Star*>(stars);
    }
};

#endif // _ZONEDATA_HPP_