Source/System/Window/Foreground/OSGImageForeground.cpp

   1 /*---------------------------------------------------------------------------*\
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   5  *             Copyright(C) 2000-2005 by the OpenSG Forum                   *
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  29 /*---------------------------------------------------------------------------*\
  30  *                                Changes                                    *
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  37 \*---------------------------------------------------------------------------*/
  38
  39 //---------------------------------------------------------------------------
  40 //  Includes
  41 //---------------------------------------------------------------------------
  42
  43 #include <cstdlib>
  44 #include <cstdio>
  45
  46 #include "OSGConfig.h"
  47
  48 #include "OSGGL.h"
  49
  50 #include "OSGFieldContainer.h"
  51 #include "OSGNode.h"
  52 #include "OSGAction.h"
  53 #include "OSGViewport.h"
  54 #include "OSGCamera.h"
  55 #include "OSGWindow.h"
  56 #include "OSGImage.h"
  57
  58 #include "OSGImageForeground.h"
  59
  60 OSG_USING_NAMESPACE
  61
  62 // Documentation for this class is emited in the
  63 // OSGImageForegroundBase.cpp file.
  64 // To modify it, please change the .fcd file (OSGImageForeground.fcd) and
  65 // regenerate the base file.
  66
  67 /***************************************************************************\
  68  *                           Class methods                                 *
  69 \***************************************************************************/
  70
  71 /*-------------------------------------------------------------------------*\
  72  -  private                                                                -
  73 \*-------------------------------------------------------------------------*/
  74
  75 void ImageForeground::initMethod(InitPhase ePhase)
  76 {
  77     Inherited::initMethod(ePhase);
  78 }
  79
  80 /***************************************************************************\
  81  *                           Instance methods                              *
  82 \***************************************************************************/
  83
  84 /*------------- constructors & destructors --------------------------------*/
  85
  86 ImageForeground::ImageForeground(void) :
  87     Inherited()
  88 {
  89 }
  90
  91 ImageForeground::ImageForeground(const ImageForeground &source) :
  92     Inherited(source)
  93 {
  94 }
  95
  96 ImageForeground::~ImageForeground(void)
  97 {
  98 }
  99
 100 void ImageForeground::changed(ConstFieldMaskArg whichField,
 101                               UInt32            origin,
 102                               BitVector         details)
 103 {
 104     Inherited::changed(whichField, origin, details);
 105 }
 106
 107 /*------------------------------- dump ----------------------------------*/
 108
 109 void ImageForeground::dump(     UInt32    OSG_CHECK_ARG(uiIndent),
 110                            const BitVector OSG_CHECK_ARG(bvFlags)) const
 111 {
 112     SLOG << "Dump ImageForeground NI" << std::endl;
 113 }
 114
 115
 116 void ImageForeground::draw(DrawEnv * pEnv)
 117 {
 118 #if !defined(OSG_OGL_COREONLY) || defined(OSG_CHECK_COREONLY)
 119     if(getActive() == false)
 120         return;
 121
 122     UInt16 i;
 123
 124     for(i = 0; i < getMFPositions()->size(); i++)
 125     {
 126         if(getImages(i) != NULL)
 127             break;
 128     }
 129
 130     if(i == getMFPositions()->size())   // all images == NULL?
 131         return;
 132
 133     glPushAttrib(GL_POLYGON_BIT | GL_DEPTH_BUFFER_BIT |
 134                  GL_LIGHTING_BIT);
 135
 136     glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
 137
 138     glDisable(GL_DEPTH_TEST);
 139
 140     glDisable(GL_COLOR_MATERIAL);
 141
 142     glDisable(GL_TEXTURE_2D);
 143
 144     glMatrixMode(GL_MODELVIEW);
 145     glPushMatrix();
 146     glLoadIdentity();
 147
 148     glMatrixMode(GL_PROJECTION);
 149     glPushMatrix();
 150     glLoadIdentity();
 151     glOrtho(0, 1, 0, 1, 0, 1);
 152
 153     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 154     glEnable(GL_BLEND);
 155
 156     float vpWidth = 1.0, vpHeight = 1.0;
 157
 158     // for absolute pixel position
 159     vpWidth  = 1.0 / pEnv->getPixelWidth ();
 160     vpHeight = 1.0 / pEnv->getPixelHeight();
 161
 162     for(i = 0; i < getMFPositions()->size(); i++)
 163     {
 164         Image *img = getImages(i);
 165
 166         if(img == NULL)
 167             continue;
 168
 169         Pnt2f p = getPositions(i);
 170
 171         if(p[0] >= 1.0 || p[1] >= 1.0)
 172         {
 173             glRasterPos2f(p[0] * vpWidth, p[1] * vpHeight); // absolute
 174                                                             // position
 175         }
 176         else
 177         {
 178             glRasterPos2f(p[0], p[1]); // relative position
 179         }
 180
 181         if(i < this->getMFScales()->size())
 182         {
 183             glPixelZoom(this->getScales(i)[0],
 184                         this->getScales(i)[1]);
 185         }
 186
 187         glDrawPixels(img->getWidth(),
 188                      img->getHeight(),
 189                      img->getPixelFormat(),
 190                      GL_UNSIGNED_BYTE,
 191                      img->getData());
 192
 193         glPixelZoom(1.f, 1.f);
 194     }
 195     glDisable(GL_BLEND);
 196
 197
 198     glPopMatrix();
 199     glMatrixMode(GL_MODELVIEW);
 200     glPopMatrix();
 201
 202     glPopAttrib();
 203 #endif
 204 }
 205
 206 void ImageForeground::subImage(Image *image)
 207 {
 208     MFImagesType::const_iterator imgIt = getMFImages()->find(image);
 209
 210     if(imgIt != getMFImages()->end())
 211     {
 212         MFImagesType::difference_type iIdx =
 213             std::distance(getMFImages()->begin(), imgIt);
 214
 215         editMFImages   ()->erase(iIdx);
 216         editMFPositions()->erase(iIdx);
 217     }
 218 }