Add macro to save all OpenGL views in a cool and modern look. Used in Online Event...

diff --git a/EVE/macros/saveViews.C b/EVE/macros/saveViews.C
new file mode 100644 (file)
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+++ b/EVE/macros/saveViews.C
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+/**************************************************************************
+ * Copyright(c) 1998-2008, ALICE Experiment at CERN, all rights reserved. *
+ * See http://aliceinfo.cern.ch/Offline/AliRoot/License.html for          *
+ * full copyright notice.                                                 *
+ **************************************************************************/
+ // Author: Mihai Niculescu 2013
+ 
+ 
+ /*
+ * This script creates a single picture containing all OpenGL views from a running AliEve
+ *
+ * Considering a given size (width, height) for the final picture, the size for all OpenGL 
+ * views are computed using the same aspect ratio (width/height) as the main 3D View
+ */
+
+#include <TASImage.h>
+#include <TGLViewer.h>
+#include <TEveViewer.h>
+#include <TEveManager.h>
+#include <TMath.h>
+#include <TSystem.h>
+#include <TTimeStamp.h>
+
+#include <STEER/ESD/AliESDEvent.h>
+#include <STEER/ESD/AliESDRun.h>
+#include <STEER/STEER/AliGRPObject.h>
+#include <STEER/CDB/AliCDBEntry.h>
+#include <STEER/CDB/AliCDBManager.h>
+#include <RAW/AliRawReader.h>
+#include <RAW/AliRawEventHeaderBase.h>
+#include <EVE/EveBase/AliEveEventManager.h>
+
+TString getEventInfo();
+
+/* composite picture final size
+       compositeImgFileName - save final image to this file    
+       width - of the final image
+       height -of the final image
+*/
+void saveViews(const char* compositeImgFileName="views.png", Int_t width = 1440, Int_t height= 900)
+{
+       Info("saveViews.C", "saving views to [%s]", compositeImgFileName);
+
+       Int_t heightInfoBar = 65; // hold height of the Information bar
+       
+       TASImage* compositeImg=0; // this holds the final image
+       TASImage* tempImg=0; // temporary used for loading images
+       
+       TEveViewerList* viewers = gEve->GetViewers();
+       Int_t Nviewers = viewers->NumChildren()-2; // remark: 3D view is counted twice
+               
+       compositeImg = new TASImage(width, height);
+               
+       // 3D View size 
+       Int_t width3DView = TMath::FloorNint((float)Nviewers*width/(float)(Nviewers+1)); // the width of the 3D view
+       Int_t height3DView= height-heightInfoBar; // the height of the 3D view
+       Float_t aspectRatio = (float)width3DView/(float)height3DView; // 3D View aspect ratio
+               
+       // Children View Size
+       Int_t heightChildView = TMath::FloorNint((float)height3DView/(float)Nviewers);
+       Int_t widthChildView  = TMath::FloorNint(aspectRatio*heightChildView); // has the same aspect ratio as the 3D view
+       
+       int index=0; // iteration counter
+       int x = width3DView; // x position of the child view
+       int y = 0;// y position of the child view
+       TString viewFilename; // save view to this file
+       for(TEveElement::List_i i = (++viewers->BeginChildren()); i != viewers->EndChildren(); i++){ // NB: this skips the first children (first 3D View)
+               TEveViewer* view = ((TEveViewer*)*i);
+               viewFilename = Form("view-%d.png", index);
+
+    // Save OpenGL views in files
+    if(index==0){
+                       view->GetGLViewer()->SavePictureUsingFBO(viewFilename, width3DView, height3DView);
+               }
+               else {
+                       view->GetGLViewer()->SavePictureUsingFBO(viewFilename, widthChildView, heightChildView);
+               }
+               
+               tempImg = new TASImage(viewFilename);
+               
+               // copy view image in the composite image
+               if(index==0){
+                       tempImg->CopyArea(compositeImg, 0,0, width3DView, height3DView);
+               }
+               else {
+                       tempImg->CopyArea(compositeImg, 0,0, widthChildView, heightChildView, x,y);
+                   
+    // draw a border around child views
+    compositeImg->DrawRectangle(x,y, widthChildView, heightChildView);
+    //compositeImg->FillRectangle("#CFEDF0", x+1,y+1, widthChildView-1, 40);
+    //compositeImg->DrawText(x+5,y+10, view->GetName(), 28, "#000000", "verdana.ttf", TImage::kOutlineBelow);
+    
+    }
+    
+    /*
+     final touches inside loop
+    */
+    delete tempImg;
+    if(index>0) // skip 3D View
+       y+=heightChildView;
+       
+    index++;
+   }
+
+ 
+ // show LIVE bar
+       TTimeStamp ts;
+       TString tNow = ts.AsString("s"); // display date & time
+ 
+       compositeImg->Gradient( 90, "#EAEAEA #D2D2D2 #FFFFFF", 0, 30, 0, 234, 75);
+       compositeImg->Gradient( 90, "#D6D6D6 #242424 #000000", 0, 35, 40, 224, 30);
+       compositeImg->BeginPaint();
+       compositeImg->DrawRectangle(30,0, 234, 75);
+       compositeImg->DrawText(35, 4, "ALICE", 40, "#000000", "FreeSans.otf");
+       compositeImg->DrawText(162, 6, "LIVE", 40, "#FF2D00", "FreeSansBold.otf");
+       compositeImg->DrawText(59, 48, tNow, 20, "#FFFFFF", "arial.ttf");
+       compositeImg->EndPaint();
+       
+       // show Information bar
+       TString stringInfo;
+       stringInfo = getEventInfo();
+       compositeImg->Gradient( 90, "#1B58BF #1D5CDF #0194FF", 0, 0, height-heightInfoBar, width, heightInfoBar);
+       compositeImg->BeginPaint();
+       compositeImg->DrawText(10, height-heightInfoBar+15, stringInfo, 28, "#FFFFFF", "FreeSansBold.otf");
+       compositeImg->EndPaint();
+               
+       
+       // write composite image to disk
+       compositeImg->CopyArea(compositeImg, 0,0, width, height);
+       compositeImg->WriteImage(compositeImgFileName);
+       
+       delete compositeImg;
+       
+       return;
+}
+
+TString getEventInfo()
+{
+       TString rawInfo, esdInfo;
+
+  if (!AliEveEventManager::HasRawReader())
+  {
+    rawInfo = "";
+  }
+  else
+  {
+       AliRawReader* rawReader = AliEveEventManager::AssertRawReader();
+               if(!rawReader) return "";
+               rawInfo.Form("Run: %d  Event#: %d (%s)",
+               rawReader->GetRunNumber(),
+               AliEveEventManager::CurrentEventId(),
+               AliRawEventHeaderBase::GetTypeName(rawReader->GetType())
+               );
+               
+        return rawInfo;
+  }
+
+  if (!AliEveEventManager::HasESD())
+  {
+    esdInfo = "";
+  }
+  else
+  {
+               AliESDEvent* esd =  AliEveEventManager::AssertESD();
+
+               esdInfo.Form("Colliding: %s Run: %d  Event: %d (%s)",
+               esd->GetESDRun()->GetBeamType(),
+               esd->GetRunNumber(),
+               AliEveEventManager::CurrentEventId(),
+               AliRawEventHeaderBase::GetTypeName(esd->GetEventType())
+               );
+  }
+
+  return esdInfo;
+}