src/Canvas/canvas_mgr.cxx

   1 // Canvas with 2D rendering api
   2 //
   3 // Copyright (C) 2012  Thomas Geymayer <tomgey@gmail.com>
   4 //
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License as
   7 // published by the Free Software Foundation; either version 2 of the
   8 // License, or (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful, but
  11 // WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18
  19 #include "canvas_mgr.hxx"
  20
  21 #include <Canvas/FGCanvasSystemAdapter.hxx>
  22 #include <Cockpit/od_gauge.hxx>
  23 #include <Main/fg_props.hxx>
  24 #include <Viewer/CameraGroup.hxx>
  25
  26 #include <simgear/canvas/Canvas.hxx>
  27
  28 using simgear::canvas::Canvas;
  29
  30 //------------------------------------------------------------------------------
  31 CanvasMgr::CanvasMgr():
  32   simgear::canvas::CanvasMgr
  33   (
  34    fgGetNode("/canvas/by-index", true),
  35    simgear::canvas::SystemAdapterPtr( new canvas::FGCanvasSystemAdapter )
  36   ),
  37   _cb_model_reinit
  38   (
  39     this,
  40     &CanvasMgr::handleModelReinit,
  41     fgGetNode("/sim/signals/model-reinit", true)
  42   )
  43 {
  44   Canvas::addPlacementFactory
  45   (
  46     "object",
  47     boost::bind
  48     (
  49       &FGODGauge::set_texture,
  50       _1,
  51       boost::bind(&Canvas::getTexture, _2),
  52       boost::bind(&Canvas::getCullCallback, _2)
  53     )
  54   );
  55 }
  56
  57 //------------------------------------------------------------------------------
  58 unsigned int
  59 CanvasMgr::getCanvasTexId(const simgear::canvas::CanvasPtr& canvas) const
  60 {
  61   osg::Texture2D* tex = canvas->getTexture();
  62   if( !tex )
  63     return 0;
  64
  65 //  osgViewer::Viewer::Contexts contexts;
  66 //  globals->get_renderer()->getViewer()->getContexts(contexts);
  67 //
  68 //  if( contexts.empty() )
  69 //    return 0;
  70
  71   static osg::Camera* guiCamera =
  72     flightgear::getGUICamera(flightgear::CameraGroup::getDefault());
  73
  74   osg::State* state = guiCamera->getGraphicsContext()->getState(); //contexts[0]->getState();
  75   if( !state )
  76     return 0;
  77
  78   osg::Texture::TextureObject* tobj =
  79     tex->getTextureObject( state->getContextID() );
  80   if( !tobj )
  81     return 0;
  82
  83   return tobj->_id;
  84 }
  85
  86 //----------------------------------------------------------------------------
  87 void CanvasMgr::handleModelReinit(SGPropertyNode*)
  88 {
  89   for(size_t i = 0; i < _elements.size(); ++i)
  90     boost::static_pointer_cast<Canvas>(_elements[i])
  91       ->reloadPlacements("object");
  92 }