contrib/camera/renderer.cpp

   1 /*
   2    Copyright (C) 1999-2007 id Software, Inc. and contributors.
   3    For a list of contributors, see the accompanying CONTRIBUTORS file.
   4
   5    This file is part of GtkRadiant.
   6
   7    GtkRadiant is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    GtkRadiant is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GtkRadiant; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20  */
  21
  22 /*
  23    Camera plugin for GtkRadiant
  24    Copyright (C) 2002 Splash Damage Ltd.
  25  */
  26
  27 #include "camera.h"
  28
  29 CRenderer::CRenderer() {
  30
  31         refCount = 1;
  32
  33         m_bHooked = FALSE;
  34
  35         Register();
  36         Initialize();
  37 }
  38
  39 CRenderer::~CRenderer() {
  40         if ( m_bHooked ) {
  41                 UnRegister();
  42         }
  43 }
  44
  45 void CRenderer::Register() {
  46         g_QglTable.m_pfnHookGL2DWindow( this );
  47         g_QglTable.m_pfnHookGL3DWindow( this );
  48         m_bHooked = TRUE;
  49 }
  50
  51 void CRenderer::UnRegister() {
  52         if ( g_QglTable.m_nSize ) {
  53                 g_QglTable.m_pfnUnHookGL2DWindow( this );
  54                 g_QglTable.m_pfnUnHookGL3DWindow( this );
  55         }
  56         m_bHooked = FALSE;
  57 }
  58
  59 void CRenderer::Initialize() {
  60
  61 }
  62
  63 void CRenderer::Draw2D( VIEWTYPE vt ) {
  64
  65         g_QglTable.m_pfn_qglPushAttrib( GL_ALL_ATTRIB_BITS );
  66         g_QglTable.m_pfn_qglPushMatrix();
  67
  68         switch ( vt )
  69         {
  70         case XY:
  71                 break;
  72         case XZ:
  73                 g_QglTable.m_pfn_qglRotatef( 270.0f, 1.0f, 0.0f, 0.0f );
  74                 break;
  75         case YZ:
  76                 g_QglTable.m_pfn_qglRotatef( 270.0f, 1.0f, 0.0f, 0.0f );
  77                 g_QglTable.m_pfn_qglRotatef( 270.0f, 0.0f, 0.0f, 1.0f );
  78                 break;
  79         }
  80
  81         CCamera *cam = firstCam;
  82         while ( cam ) {
  83                 cam->GetCam()->draw( ( ( Listener && cam == g_pCurrentEditCam ) ? true : false ) );
  84                 cam = cam->GetNext();
  85         }
  86
  87         g_QglTable.m_pfn_qglPopMatrix();
  88         g_QglTable.m_pfn_qglPopAttrib();
  89 }
  90
  91 void CRenderer::Draw3D() {
  92         // FIXME: really need a mainloop callback from the editor core
  93         static long start;
  94         static float cycle;
  95         static long msecs;
  96         static long current;
  97
  98         if ( g_iPreviewRunning ) {
  99                 if ( g_iPreviewRunning == 1 ) {
 100                         start = g_FuncTable.m_pfnQGetTickCount();
 101                         GetCurrentCam()->GetCam()->startCamera( start );
 102                         cycle = GetCurrentCam()->GetCam()->getTotalTime();
 103                         msecs = (long)( cycle * 1000 );
 104                         current = start;
 105                         g_iPreviewRunning = 2;
 106                 }
 107
 108                 if ( current < start + msecs ) {
 109                         float fov;
 110                         vec3_t origin = {0.0f, 0.0f, 0.0f}, dir = {0.0f, 0.0f, 0.0f}, angles;
 111
 112                         GetCurrentCam()->GetCam()->getCameraInfo( current, &origin[0], &dir[0], &fov );
 113                         VectorSet( angles, asin( dir[2] ) * 180 / 3.14159, atan2( dir[1], dir[0] ) * 180 / 3.14159, 0 );
 114                         g_CameraTable.m_pfnSetCamera( origin, angles );
 115                         current = g_FuncTable.m_pfnQGetTickCount();
 116                 }
 117                 else {
 118                         g_iPreviewRunning = 0;
 119                         GetCurrentCam()->GetCam()->setRunning( false );
 120                         g_FuncTable.m_pfnSysUpdateWindows( W_XY_OVERLAY | W_CAMERA );
 121                 }
 122         }
 123
 124         g_QglTable.m_pfn_qglPushAttrib( GL_ALL_ATTRIB_BITS );
 125
 126         CCamera *cam = firstCam;
 127         while ( cam ) {
 128                 cam->GetCam()->draw( ( ( Listener && cam == g_pCurrentEditCam ) ? true : false ) );
 129                 cam = cam->GetNext();
 130         }
 131
 132         if ( g_iPreviewRunning ) {
 133                 int x, y, width, height, i;
 134                 float degInRad;
 135
 136                 g_CameraTable.m_pfnGetCamWindowExtents( &x, &y, &width, &height );
 137
 138                 // setup orthographic projection mode
 139                 g_QglTable.m_pfn_qglMatrixMode( GL_PROJECTION );
 140                 g_QglTable.m_pfn_qglLoadIdentity();
 141                 g_QglTable.m_pfn_qglDisable( GL_DEPTH_TEST );
 142                 g_QglTable.m_pfn_qglOrtho( 0, (float)width, 0, (float)height, -100, 100 );
 143                 g_QglTable.m_pfn_qglMatrixMode( GL_MODELVIEW );
 144
 145                 g_QglTable.m_pfn_qglLoadIdentity();
 146                 g_QglTable.m_pfn_qglColor3f( 1.f, 1.f, 1.f );
 147                 g_QglTable.m_pfn_qglBegin( GL_LINE_LOOP );
 148                 g_QglTable.m_pfn_qglVertex2f( 10, 10 );
 149                 g_QglTable.m_pfn_qglVertex2f( 40, 10 );
 150                 g_QglTable.m_pfn_qglVertex2f( 40, 25 );
 151                 g_QglTable.m_pfn_qglVertex2f( 10, 25 );
 152                 g_QglTable.m_pfn_qglEnd();
 153
 154                 g_QglTable.m_pfn_qglBegin( GL_LINE_LOOP );
 155                 for ( i = 0; i < 360; i += 60 ) {
 156                         degInRad = i * ( 3.14159265358979323846 / 180.f );
 157                         g_QglTable.m_pfn_qglVertex2f( 18 + cos( degInRad ) * 5, 18 + sin( degInRad ) * 5 );
 158                 }
 159                 g_QglTable.m_pfn_qglEnd();
 160
 161                 degInRad = ( 360 - ( ( current - start ) % 360 ) ) * ( 3.14159265358979323846 / 180.f );
 162                 g_QglTable.m_pfn_qglBegin( GL_LINES );
 163                 g_QglTable.m_pfn_qglVertex2f( 18, 18 );
 164                 g_QglTable.m_pfn_qglVertex2f( 18 + cos( degInRad ) * 5, 18 + sin( degInRad ) * 5 );
 165                 g_QglTable.m_pfn_qglVertex2f( 32, 18 );
 166                 g_QglTable.m_pfn_qglVertex2f( 32 + cos( degInRad ) * 5, 18 + sin( degInRad ) * 5 );
 167                 g_QglTable.m_pfn_qglEnd();
 168
 169                 g_QglTable.m_pfn_qglBegin( GL_LINE_LOOP );
 170                 for ( i = 0; i < 360; i += 60 ) {
 171                         degInRad = i * ( 3.14159265358979323846 / 180.f );
 172                         g_QglTable.m_pfn_qglVertex2f( 32 + cos( degInRad ) * 5, 18 + sin( degInRad ) * 5 );
 173                 }
 174                 g_QglTable.m_pfn_qglEnd();
 175
 176                 g_QglTable.m_pfn_qglBegin( GL_LINES );
 177                 g_QglTable.m_pfn_qglVertex2f( 40, 22 );
 178                 g_QglTable.m_pfn_qglVertex2f( 52, 31 );
 179                 g_QglTable.m_pfn_qglVertex2f( 40, 13 );
 180                 g_QglTable.m_pfn_qglVertex2f( 52, 4 );
 181                 g_QglTable.m_pfn_qglEnd();
 182         }
 183
 184         g_QglTable.m_pfn_qglPopAttrib();
 185 }