src/client/GLEXT/GLViewPort.cpp

   1 ////////////////////////////////////////////////////////////////////////////////
   2 //    Scorched3D (c) 2000-2009
   3 //
   4 //    This file is part of Scorched3D.
   5 //
   6 //    Scorched3D is free software; you can redistribute it and/or modify
   7 //    it under the terms of the GNU General Public License as published by
   8 //    the Free Software Foundation; either version 2 of the License, or
   9 //    (at your option) any later version.
  10 //
  11 //    Scorched3D is distributed in the hope that it will be useful,
  12 //    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //    GNU General Public License for more details.
  15 //
  16 //    You should have received a copy of the GNU General Public License
  17 //    along with Scorched3D; if not, write to the Free Software
  18 //    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 ////////////////////////////////////////////////////////////////////////////////
  20
  21 #include <GLEXT/GLViewPort.h>
  22 #include <GLEXT/GLState.h>
  23
  24 int GLViewPort::width_ = 0;
  25 int GLViewPort::height_ = 0;
  26 int GLViewPort::actualWidth_ = 0;
  27 int GLViewPort::actualHeight_ = 0;
  28 float GLViewPort::widthMult_ = 0.0f;
  29 float GLViewPort::heightMult_ = 0.0f;
  30
  31 GLViewPort::GLViewPort()
  32 {
  33 }
  34
  35 GLViewPort::~GLViewPort()
  36 {
  37 }
  38
  39 void GLViewPort::draw()
  40 {
  41         glMatrixMode(GL_PROJECTION);
  42         glLoadIdentity();
  43         glViewport(0, 0, actualWidth_, actualHeight_);
  44         glOrtho(0.0, float(width_),
  45                         0.0, float(height_),
  46                         -4000.0, 4000.0);
  47         glMatrixMode(GL_MODELVIEW);
  48         glLoadIdentity();
  49 }
  50
  51 void GLViewPort::setWindowSize(int width, int height,
  52                                                            int awidth, int aheight)
  53 {
  54         width_ = width;
  55         height_ = height;
  56         if (awidth != 0 && aheight != 0)
  57         {
  58                 actualWidth_ = awidth;
  59                 actualHeight_ = aheight;
  60         }
  61
  62         widthMult_ = (float) width_ / (float) actualWidth_;
  63         heightMult_ = (float) height_ / (float) actualHeight_;
  64 }