SbBool
generateTextureMap (SoNode *root, SoTexture2 *texture,
short textureWidth, short textureHeight)
{
SbViewportRegion myViewport(textureWidth, textureHeight);
SoOffscreenRenderer::Components comp = SoOffscreenRenderer::RGB;
// Render the scene
SoOffscreenRenderer *myRenderer = new SoOffscreenRenderer(myViewport);
myRenderer->setComponents(comp);
myRenderer->setBackgroundColor(SbColor(0.8, 0.8, 0.0));
if (!myRenderer->render(root)) {
delete myRenderer;
return FALSE;
}
// Generate the texture
texture->image.setValue(SbVec2s(textureWidth, textureHeight), comp,
myRenderer->getBuffer());
delete myRenderer;
return TRUE;
}
void Snapshot_dialog::take_snapshot( const QString& filename, const QString& f ) {
if( filename.isEmpty() ) return;
QApplication::setOverrideCursor( Qt::WaitCursor );
// Create an offscreen renderer which copies the settings from the Viewer
SoOffscreenRenderer *snapshot =
new SoOffscreenRenderer( render_area_->getViewportRegion() );
//snapshot->setTransparencyType(SoGLRenderAction::BLEND);
snapshot->setBackgroundColor( render_area_->getBackgroundColor() );
snapshot->setComponents( SoOffscreenRenderer::RGB );
// Create the buffer in snapshot
if ( !snapshot->render( render_area_->getSceneManager()->getSceneGraph()) ) {
appli_warning("Snapshot: Failed to render the scene.");
return;
}
QString format = f;
// Write the buffer to file
if( format.contains( "postscript", Qt::CaseInsensitive ) || format.contains( "PS", Qt::CaseInsensitive ) ) {
FILE *fp = fopen( qstring2string(filename).c_str(), "w");
if( !fp ) {
GsTLcerr << "Can't create file " << qstring2string(filename) << "\n" << gstlIO::end;
return;
}
snapshot->writeToPostScript(fp);
fclose(fp);
}
if( format.contains( "PPM", Qt::CaseInsensitive ) || format.contains( "PNG", Qt::CaseInsensitive ) ||
format.contains( "BMP", Qt::CaseInsensitive ) ) {
// fclose(fp);
// std::ofstream ofile( filename.latin1() );
format = format.section( " (", 0, 0 );
SbVec2s size =
render_area_->getGLRenderAction()->getViewportRegion().getViewportSizePixels();
int x = size[0];
int y = size[1];
// write_to_ppm_format( ofile, snapshot->getBuffer(), x, y );
QImage qimage( x, y, QImage::Format_RGB32 );
uchar* image = snapshot->getBuffer();
//for( int j=y-1 ; j>=0 ; j-- ) {
for( int i = 0 ; i < x ; i++ ) {
for( int j = 0 ; j < y ; j++ ) {
int r,g,b;
r= image[3*(j*x+i)];
g= image[3*(j*x+i)+1];
b= image[3*(j*x+i)+2];
uint *p = (uint *)qimage.scanLine(y-(j+1)) + i;
*p = qRgb(r,g,b);
}
}
qimage.save( filename, qstring2string(format).c_str() );
}
// QSound::play( "shutter.wav" );
delete snapshot;
QApplication::restoreOverrideCursor();
}
