ParaSphere.h

/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/
#ifndef __Sphere_H_
#define __Sphere_H_

// Precompiler options


#include "ParaVector3.h"

namespace ParaEngine {


    class Sphere
    {
    protected:
        float mRadius;
        Vector3 mCenter;
    public:
        Sphere() : mRadius(1.0), mCenter(Vector3::ZERO) {}
        Sphere(const Vector3& center, float radius)
            : mRadius(radius), mCenter(center) {}

        float getRadius(void) const { return mRadius; }

        void setRadius(float radius) { mRadius = radius; }

        const Vector3& getCenter(void) const { return mCenter; }

        void setCenter(const Vector3& center) { mCenter = center; }

        bool intersects(const Sphere& s) const
        {
            return (s.mCenter - mCenter).squaredLength() <=
                Math::Sqr(s.mRadius + mRadius);
        }
        bool intersects(const AxisAlignedBox& box) const
        {
            return Math::intersects(*this, box);
        }
        bool intersects(const Plane& plane) const
        {
            return Math::intersects(*this, plane);
        }
        bool intersects(const Vector3& v) const
        {
            return ((v - mCenter).squaredLength() <= Math::Sqr(mRadius));
        }
        

    };

}

#endif