src/render/rGradient.h

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/*

*************************************************************************

ArmageTron -- Just another Tron Lightcycle Game in 3D.
Copyright (C) 2000  Manuel Moos (manuel@moosnet.de)

**************************************************************************

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, Fifth Floor, Boston, MA  02110-1301, USA.
  
***************************************************************************

*/

#ifndef ArmageTron_rGRADIENT_H
#define ArmageTron_rGRADIENT_H

#include "defs.h"
#include "rColor.h"
#include "tCoord.h"
#include "rTexture.h"
#include <map>
#include <deque>
#include <utility>

class rGradient: public std::map<float, rColor> {
    int m_dir; 
    float m_at; 
    tCoord m_origin; 
    tCoord m_dimensions; 
    tCoord m_texScale; 

    float GetGradientPt(tCoord const &where);
    rColor GetColor(float where);

    rResourceTexture m_tex;
public:
    rGradient(); 
    ~rGradient(); 

    enum direction {
        horizontal, 
        vertical, 
        value 
    };
    void SetDir(direction dir) { m_dir = dir; }
    void SetValue(float at) { m_at = at; }
    void SetGradientEdges(tCoord const &edge1, tCoord const edge2);

    void DrawAt(tCoord const &where);

    void SetValues(tCoord const &where, float *position, float *color, float *texcoords);

    void DrawAtomicRect(tCoord const &edge1, tCoord const &edge2);
    void DrawRect(tCoord const &edge1, tCoord const &edge2);
    void DrawPoint(tCoord const &where);

    void BeginDraw();

    void SetTexture(rResourceTexture const &tex) {m_tex = tex;}
    void SetTextureScale(tCoord const &scale) {m_texScale = scale;}
};

#endif

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