void saveSnapshot(string path) {
Gtk::DrawingArea* drawArea = 0;
VRGuiBuilder()->get_widget("glarea", drawArea);
Glib::RefPtr<Gdk::Drawable> src = drawArea->get_window();
int smin = min(drawArea->get_width(), drawArea->get_height());
int u = max(0.0, drawArea->get_width()*0.5 - smin*0.5);
int v = max(0.0, drawArea->get_height()*0.5 - smin*0.5);
Glib::RefPtr<Gdk::Pixbuf> pxb = Gdk::Pixbuf::create( src, u, v, smin, smin);
pxb = pxb->scale_simple(128, 128, Gdk::INTERP_HYPER);
pxb->save(path, "png");
}
OSG::ImageRecPtr takeSnapshot() {
Gtk::DrawingArea* drawArea = 0;
VRGuiBuilder()->get_widget("glarea", drawArea);
Glib::RefPtr<Gdk::Drawable> src = drawArea->get_window(); // 24 bits per pixel ( src->get_depth() )
int w = drawArea->get_width();
int h = drawArea->get_height();
w -= w%4; h -= h%4;
//cout << "PIC FORMAT " << w << " " << h << " " << src->get_depth() << endl;
Glib::RefPtr<Gdk::Image> img = Glib::wrap( gdk_drawable_get_image(src->gobj(), 0, 0, w, h) );
Glib::RefPtr<Gdk::Pixbuf> pxb = Glib::wrap( gdk_pixbuf_get_from_image(NULL, img->gobj(), src->get_colormap()->gobj(), 0,0,0,0,w,h) );
OSG::ImageRecPtr res = OSG::Image::create();
//Image::set(pixFormat, width, height, depth, mipmapcount, framecount, framedelay, data, type, aloc, sidecount);
res->set(OSG::Image::OSG_RGB_PF, w, h, 1, 0, 1, 0, (const unsigned char*)pxb->get_pixels(), OSG::Image::OSG_UINT8_IMAGEDATA, true, 1);
return res;
}