/data/refman/pasoursint/CMSSW_6_1_1/src/Fireworks/Core/src/FW3DViewBase.cc

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// -*- C++ -*-
//
// Package:     Core
// Class  :     FW3DViewBase
//
// Implementation:
//     <Notes on implementation>
//
// Original Author:  Chris Jones
//         Created:  Thu Feb 21 11:22:41 EST 2008
// $Id: FW3DViewBase.cc,v 1.29 2012/04/29 20:54:46 amraktad Exp $
//
#include <boost/bind.hpp>

// user include files

#include "TGButton.h"
#include "TGLScenePad.h"
#include "TGLViewer.h"
#include "TGLClip.h"
#include "TGLPerspectiveCamera.h"
#include "TEveManager.h"
#include "TEveElement.h"
#include "TEveScene.h"
#include "TGLLogicalShape.h"

#include "Fireworks/Core/interface/FW3DViewBase.h"
#include "Fireworks/Core/interface/FW3DViewGeometry.h"
#include "Fireworks/Core/interface/Context.h"
#include "Fireworks/Core/interface/FWViewContext.h"
#include "Fireworks/Core/interface/FWViewEnergyScale.h"
#include "Fireworks/Core/interface/CmsShowViewPopup.h"

namespace {
class TGLClipsiLogical : public TGLLogicalShape
{
protected:
   virtual void DirectDraw(TGLRnrCtx & rnrCtx) const{}

public:
   TGLClipsiLogical() : TGLLogicalShape() {}
   virtual ~TGLClipsiLogical() {}
   void Resize(Double_t ext){}
};

const float fgColor[4] = { 1.0, 0.6, 0.2, 0.5 };

class Clipsi : public TGLClip
{
private:
   TGLRnrCtx* m_rnrCtx;
   Clipsi(const Clipsi&);            // Not implemented
   Clipsi& operator=(const Clipsi&); // Not implemented

public:
   Clipsi(TGLRnrCtx* ctx):TGLClip(* new TGLClipsiLogical, TGLMatrix(), fgColor), m_rnrCtx(ctx){}
   virtual ~Clipsi() {}
   virtual void Setup(const TGLBoundingBox & bbox) {}
   virtual void PlaneSet(TGLPlaneSet_t & planeSet) const
   {
      TGLCamera& cam = m_rnrCtx->RefCamera();

      TGLVertex3 f[4];

      f[0] =  Intersection(cam.FrustumPlane(TGLCamera::kFar),
                           cam.FrustumPlane(TGLCamera::kBottom),
                           cam.FrustumPlane(TGLCamera::kLeft)).second;
         
      f[1] =  Intersection(cam.FrustumPlane(TGLCamera::kFar),
                           cam.FrustumPlane(TGLCamera::kBottom),
                           cam.FrustumPlane(TGLCamera::kRight)).second;
         
      f[2] =  Intersection(cam.FrustumPlane(TGLCamera::kFar),
                           cam.FrustumPlane(TGLCamera::kTop),
                           cam.FrustumPlane(TGLCamera::kRight)).second;

      f[3] =  Intersection(cam.FrustumPlane(TGLCamera::kFar),
                           cam.FrustumPlane(TGLCamera::kTop),
                           cam.FrustumPlane(TGLCamera::kLeft)).second;

      TGLVector3 dd  =  cam.FrustumPlane(TGLCamera::kNear).Norm();
      dd *= (cam.GetFarClip() -cam.GetNearClip() );

      f[0] -= dd;
      f[1] -= dd;
      f[2] -= dd;
      f[3] -= dd;

      TGLVertex3 c;//(cam.GetCenterVec());
      planeSet.push_back(TGLPlane(c, f[0], f[1]));
      planeSet.push_back(TGLPlane(c, f[1], f[2]));
      planeSet.push_back(TGLPlane(c, f[2], f[3]));
      planeSet.push_back(TGLPlane(c, f[3], f[0]));
   }
};
}
//
// constants, enums and typedefs
//

//
// static data member definitions
//
//double FW3DViewBase::m_scale = 1;
//
// constructors and destructor
//
FW3DViewBase::FW3DViewBase(TEveWindowSlot* iParent, FWViewType::EType typeId):
   FWEveView(iParent, typeId, 8),
   m_geometry(0),
   m_glClip(0),
   m_showMuonBarrel(this, "Show Muon Barrel",  0l, 0l, 2l ),
   m_showMuonEndcap(this, "Show Muon Endcap", false ),
   m_showPixelBarrel(this, "Show Pixel Barrel", false ),
   m_showPixelEndcap(this, "Show Pixel Endcap", false),
   m_showTrackerBarrel(this, "Show Tracker Barrel", false ),
   m_showTrackerEndcap(this, "Show Tracker Endcap", false),
   m_rnrStyle(this, "Render Style", 0l, 0l, 2l),
   m_clipParam(this, "View dependent Clip", false),
   m_selectable(this, "Enable Tooltips", false)
{
   viewerGL()->SetCurrentCamera(TGLViewer::kCameraPerspXOZ);

   m_showMuonBarrel.addEntry(0, "Hide");
   m_showMuonBarrel.addEntry(1, "Simplified");
   m_showMuonBarrel.addEntry(2, "Full");
   m_showMuonBarrel.changed_.connect(boost::bind(&FW3DViewBase::showMuonBarrel,this,_1));

   m_rnrStyle.addEntry(TGLRnrCtx::kFill, "Fill");
   m_rnrStyle.addEntry(TGLRnrCtx::kOutline, "Outline");
   m_rnrStyle.addEntry(TGLRnrCtx::kWireFrame, "WireFrame");
   m_rnrStyle.changed_.connect(boost::bind(&FW3DViewBase::rnrStyle,this, _1));
   m_clipParam.changed_.connect(boost::bind(&FW3DViewBase::sceneClip,this, _1));

   m_selectable.changed_.connect(boost::bind(&FW3DViewBase::selectable,this, _1));

}

FW3DViewBase::~FW3DViewBase()
{
  delete m_glClip;
}

void FW3DViewBase::setContext(const fireworks::Context& context)
{
   FWEveView::setContext(context);

   m_geometry = new FW3DViewGeometry(context);
   geoScene()->AddElement(m_geometry);
   
   m_showPixelBarrel.changed_.connect(boost::bind(&FW3DViewGeometry::showPixelBarrel,m_geometry,_1));
   m_showPixelEndcap.changed_.connect(boost::bind(&FW3DViewGeometry::showPixelEndcap,m_geometry,_1));
   m_showTrackerBarrel.changed_.connect(boost::bind(&FW3DViewGeometry::showTrackerBarrel,m_geometry,_1));
   m_showTrackerEndcap.changed_.connect(boost::bind(&FW3DViewGeometry::showTrackerEndcap,m_geometry,_1));
   m_showMuonEndcap.changed_.connect(boost::bind(&FW3DViewGeometry::showMuonEndcap,m_geometry,_1));
   
   // don't clip event scene --  ideally, would have TGLClipNoClip in root
   TGLClipPlane* c=new TGLClipPlane();
   c->Setup(TGLVector3(1e10,0,0), TGLVector3(-1,0,0));
   eventScene()->GetGLScene()->SetClip(c);
}

void FW3DViewBase::showMuonBarrel(long x)
{
   if (m_geometry)
   {
      m_geometry->showMuonBarrel(x == 1);
      m_geometry->showMuonBarrelFull(x == 2);
   }
}

void
FW3DViewBase::rnrStyle( long x)
{
   geoScene()->GetGLScene()->SetStyle(x);  
   viewerGL()->Changed();
   gEve->Redraw3D();
}

void
FW3DViewBase::selectable( bool x)
{
      geoScene()->GetGLScene()->SetSelectable(x);
}
void
FW3DViewBase::sceneClip( bool x)
{
   if (m_glClip == 0)  {
      m_glClip = new Clipsi(viewerGL()->GetRnrCtx());
   }

   geoScene()->GetGLScene()->SetClip(x ? m_glClip : 0);
   for (TEveElement::List_i it =gEve->GetScenes()->BeginChildren(); it != gEve->GetScenes()->EndChildren(); ++it )
   {
      if (strncmp((*it)->GetElementName(), "TopGeoNodeScene", 15) == 0)
         ((TEveScene*)(*it))->GetGLScene()->SetClip(x ? m_glClip : 0);
   }
   viewerGL()->RequestDraw();
}

//______________________________________________________________________________
void
FW3DViewBase::addTo(FWConfiguration& iTo) const
{
   // take care of parameters
   FWEveView::addTo(iTo);
   TGLPerspectiveCamera* camera = dynamic_cast<TGLPerspectiveCamera*>(&(viewerGL()->CurrentCamera()));
   if (camera)
      addToPerspectiveCamera(camera, "Plain3D", iTo);   
}

//______________________________________________________________________________
void
FW3DViewBase::setFrom(const FWConfiguration& iFrom)
{
   // take care of parameters
   FWEveView::setFrom(iFrom);

   TGLPerspectiveCamera* camera = dynamic_cast<TGLPerspectiveCamera*>(&(viewerGL()->CurrentCamera()));
   if (camera)
      setFromPerspectiveCamera(camera, "Plain3D", iFrom);

   if (iFrom.version() < 5)
   {
      // transparency moved to common preferences in FWEveView version 5
      std::string tName("Detector Transparency");
      std::istringstream s(iFrom.valueForKey(tName)->value());
      int transp;
      s>> transp;
      context().colorManager()->setGeomTransparency(transp, false);
   }
}


void 
FW3DViewBase::populateController(ViewerParameterGUI& gui) const
{
   FWEveView::populateController(gui);

   gui.requestTab("Detector").
      addParam(&m_showMuonBarrel).
      addParam(&m_showMuonEndcap).
      addParam(&m_showTrackerBarrel).
      addParam(&m_showTrackerEndcap).
      addParam(&m_showPixelBarrel).
      addParam(&m_showPixelEndcap).  
      separator().
      addParam(&m_rnrStyle).
      addParam(&m_clipParam).
      addParam(&m_selectable);


   gui.requestTab("Style").separator();
   gui.getTabContainer()->AddFrame(new TGTextButton(gui.getTabContainer(), "Root controls",
                                                    Form("TEveGedEditor::SpawnNewEditor((TGLViewer*)0x%lx)", (unsigned long)viewerGL())));
}