GLViewPort.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D 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 Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <GLEXT/GLViewPort.h>
#include <GLEXT/GLState.h>

int GLViewPort::width_ = 0;
int GLViewPort::height_ = 0;
int GLViewPort::actualWidth_ = 0;
int GLViewPort::actualHeight_ = 0;
float GLViewPort::widthMult_ = 0.0f;
float GLViewPort::heightMult_ = 0.0f;

GLViewPort::GLViewPort()
{
}

GLViewPort::~GLViewPort()
{
}

void GLViewPort::draw()
{
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();       
        glViewport(0, 0, actualWidth_, actualHeight_);
        glOrtho(0.0, float(width_), 
                        0.0, float(height_), 
                        -4000.0, 4000.0);
        glMatrixMode(GL_MODELVIEW);
        glLoadIdentity();
}

void GLViewPort::setWindowSize(int width, int height,
                                                           int awidth, int aheight)
{
        width_ = width;
        height_ = height;
        if (awidth != 0 && aheight != 0)
        {
                actualWidth_ = awidth;
                actualHeight_ = aheight;
        }

        widthMult_ = (float) width_ / (float) actualWidth_;
        heightMult_ = (float) height_ / (float) actualHeight_;
}

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