+ if ( bgData.isValid() ) {
+ switch ( bgData.mode() ) {
+ case Qtx::ColorBackground:
+ {
+ QColor c = bgData.color();
+ if ( c.isValid() ) {
+ // show solid-colored background
+ getRenderer()->SetTexturedBackground( false ); // cancel texture mode
+ getRenderer()->SetGradientBackground( false ); // cancel gradient mode
+ getRenderer()->SetBackground( c.red()/255.0,
+ c.green()/255.0,
+ c.blue()/255.0 ); // set background color
+ ok = true;
+ }
+ break;
+ }
+ case Qtx::SimpleGradientBackground:
+ {
+ QColor c1, c2;
+ int type = bgData.gradient( c1, c2 );
+ if ( c1.isValid() )
+ {
+ if ( !c2.isValid() )
+ c2 = c1;
+
+ // show two-color gradient background
+ getRenderer()->SetTexturedBackground( false ); // cancel texture mode
+ getRenderer()->SetGradientBackground( true ); // switch to gradient mode
+
+ VTKViewer_OpenGLRenderer* aRenderer =
+ VTKViewer_OpenGLRenderer::SafeDownCast( getRenderer() );
+ if( aRenderer )
+ {
+ aRenderer->SetGradientType( type );
+ aRenderer->SetBackground( c1.redF(), c1.greenF(), c1.blueF() );
+ aRenderer->SetBackground2( c2.redF(), c2.greenF(), c2.blueF() );
+ ok = true;
+ }
+ }
+ break;
+ }
+ case Qtx::CustomGradientBackground:
+ {
+ // NOT IMPLEMENTED YET
+ getRenderer()->SetTexturedBackground( false ); // cancel texture mode
+ getRenderer()->SetGradientBackground( false ); // cancel gradient mode
+ // .........
+ break;
+ }
+ default:
+ break;
+ }
+ if ( bgData.isTextureShown() ) {
+ QString fileName;
+ int textureMode = bgData.texture( fileName );
+ QFileInfo fi( fileName );
+ if ( !fileName.isEmpty() && fi.exists() ) {
+ // read texture from file
+ QString extension = fi.suffix().toLower();
+ vtkImageReader2* aReader = 0;
+ if ( extension == "jpg" || extension == "jpeg" )
+ aReader = vtkJPEGReader::New();
+ else if ( extension == "bmp" )
+ aReader = vtkBMPReader::New();
+ else if ( extension == "tif" || extension == "tiff" )
+ aReader = vtkTIFFReader::New();
+ else if ( extension == "png" )
+ aReader = vtkPNGReader::New();
+ else if ( extension == "mhd" || extension == "mha" )
+ aReader = vtkMetaImageReader::New();
+ if ( aReader ) {
+ // create texture
+ aReader->SetFileName( fi.absoluteFilePath().toLatin1().constData() );
+ aReader->Update();
+
+ VTKViewer_Texture* aTexture = VTKViewer_Texture::New();
+ vtkImageMapToColors* aMap = 0;
+ vtkAlgorithmOutput* anOutput;
+ /*
+ // special processing for BMP reader
+ vtkBMPReader* aBMPReader = (vtkBMPReader*)aReader;
+ if ( aBMPReader ) {
+ // Special processing for BMP file
+ aBMPReader->SetAllow8BitBMP(1);
+
+ aMap = vtkImageMapToColors::New();
+ aMap->SetInputConnection( aBMPReader->GetOutputPort() );
+ aMap->SetLookupTable( (vtkScalarsToColors*)aBMPReader->GetLookupTable() );
+ aMap->SetOutputFormatToRGB();
+
+ anOutput = aMap->GetOutputPort();
+ }
+ else {
+ }
+ */
+ anOutput = aReader->GetOutputPort( 0 );
+ aTexture->SetInputConnection( anOutput );
+ // set texture mode
+ // VSR: Currently, VTK only supports Stretch mode, so below code will give
+ // the same results for all modes
+ switch ( textureMode ) {
+ case Qtx::TileTexture:
+ aTexture->RepeatOn();
+ aTexture->EdgeClampOff();
+ aTexture->InterpolateOff();
+ break;
+ case Qtx::StretchTexture:
+ aTexture->RepeatOff();
+ aTexture->EdgeClampOff();
+ aTexture->InterpolateOn();
+ break;
+ case Qtx::CenterTexture:
+ default:
+ aTexture->RepeatOff();
+ aTexture->EdgeClampOn();
+ aTexture->InterpolateOff();
+ break;
+ }
+ // show textured background
+ getRenderer()->SetTexturedBackground( true ); // switch to texture mode
+ getRenderer()->SetBackgroundTexture( aTexture ); // set texture image
+
+ // clean-up resources
+ if ( aMap )
+ aMap->Delete();
+ aReader->Delete();
+ aTexture->Delete();
+ ok = true;
+ }
+ }