frame.hpp

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/*
    RenderStack  Support library for OpenGL 3+
    Copyright (C) 2010  Timo Suoranta

    This library 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 2.1 of the License, or (at your option) any later version.

    This library 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 library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#ifndef FRAME_HPP
#define FRAME_HPP

#include "renderstack/rs.h"
#include "renderstack/matrix.hpp"
#include "renderstack/uniform_bindings.hpp"

namespace renderstack {

class frame
:   public uniform_source
{
public:
    frame();

    void translate_in_world(vec3 const &v);
    void rotate_in_world   (vec3 const &axis, float angle_radians);
    void set_hpb_xyz       (vec3 const &hpb, vec3 const &xyz);

    matrix  &local_to_world(){ return m_local_to_world; }
    matrix  &world_to_local(){ return m_world_to_local; } 
    matrix  const &local_to_world() const { return m_local_to_world; }
    matrix  const &world_to_local() const { return m_world_to_local; } 

    vec3    position_in_world(){ return m_local_to_world.column3(3); }

public:
    bool connect(uniform_bindings &bindings, enum logical_uniform uniform, int slot);

public:
    static class frame identity;

private:
    matrix  m_local_to_world;
    matrix  m_world_to_local;
};

}

#endif