From 028b6f344720d2fd8f46ad112874027b0dca865d Mon Sep 17 00:00:00 2001
From: dsarrut <dsarrut>
Date: Wed, 30 Jun 2010 06:20:09 +0000
Subject: [PATCH] add possibility to display one ROI by FG value

---
 vv/vvBinaryImageOverlayActor.cxx | 45 +++++++++++++++++++++++++++-----
 vv/vvBinaryImageOverlayActor.h   |  4 ++-
 2 files changed, 42 insertions(+), 7 deletions(-)

diff --git a/vv/vvBinaryImageOverlayActor.cxx b/vv/vvBinaryImageOverlayActor.cxx
index efdb191..a30206f 100644
--- a/vv/vvBinaryImageOverlayActor.cxx
+++ b/vv/vvBinaryImageOverlayActor.cxx
@@ -39,6 +39,9 @@ vvBinaryImageOverlayActor::vvBinaryImageOverlayActor()
   mImage = 0;
   mSlicer = 0;
   mColorLUT = vtkLookupTable::New();
+  mForegroundValue = 1;
+  mBackgroundValue = 0;
+  m_modeBG = true;
 }
 //------------------------------------------------------------------------------
 
@@ -90,10 +93,31 @@ void vvBinaryImageOverlayActor::Initialize()
     // how many intensity ?
     vtkImageMapToRGBA * mOverlayMapper = vtkImageMapToRGBA::New();
     mOverlayMapper->SetInput(mImage->GetVTKImages()[0]); // DS TODO : to change if it is 4D !!!
-    mColorLUT->SetRange(0,1);
-    mColorLUT->SetNumberOfTableValues(2);
-    mColorLUT->SetTableValue(mBackgroundValue, 0, 0, 0, 0.0);   // BG
-    mColorLUT->SetTableValue(1, mColor[0], mColor[1], mColor[2], mAlpha); // FG
+
+    // DD("change to nb of intensity");
+    double range[2];
+    mImage->GetVTKImages()[0]->GetScalarRange(range);
+    // DD(range[0]);
+//     DD(range[1]);
+    int n = range[1]-range[0]+1;
+    mColorLUT->SetRange(range[0],range[1]);
+    mColorLUT->SetNumberOfTableValues(n);
+
+    // Mode BG -> all is color except BG
+    if (m_modeBG) {
+      for(int i=0; i<n; i++) {
+	mColorLUT->SetTableValue(i, mColor[0], mColor[1], mColor[2], mAlpha);
+      }
+      mColorLUT->SetTableValue(mBackgroundValue, 0, 0, 0, 0.0);
+    }
+    else {
+      // Mode FG -> all is BG, except FG which is color
+      for(int i=0; i<n; i++) {
+	mColorLUT->SetTableValue(i, 0, 0, 0, 0.0);
+      }
+      mColorLUT->SetTableValue(mForegroundValue, mColor[0], mColor[1], mColor[2], mAlpha);
+    }
+
     mOverlayMapper->SetLookupTable(mColorLUT);
 
     vtkImageActor * mOverlayActor = vtkImageActor::New();
@@ -153,10 +177,19 @@ void vvBinaryImageOverlayActor::SetOpacity(double d)
 
 
 //------------------------------------------------------------------------------
-void vvBinaryImageOverlayActor::SetImage(vvImage::Pointer image, double bg)
+void vvBinaryImageOverlayActor::SetImage(vvImage::Pointer image, double bg, bool modeBG)
 {
+  //  DD("vvBinaryImageOverlayActor::SetImage");
+  //DD(modeBG);
   mImage = image;
-  mBackgroundValue = bg;
+  if (modeBG) {
+    mBackgroundValue = bg;
+    m_modeBG = true;
+  }
+  else {
+    mForegroundValue = bg;
+    m_modeBG = false;
+  }
 }
 //------------------------------------------------------------------------------
 
diff --git a/vv/vvBinaryImageOverlayActor.h b/vv/vvBinaryImageOverlayActor.h
index 58512ed..fedd284 100644
--- a/vv/vvBinaryImageOverlayActor.h
+++ b/vv/vvBinaryImageOverlayActor.h
@@ -39,7 +39,7 @@ class vvBinaryImageOverlayActor
   void SetSlicer(vvSlicer * slicer);
   void SetColor(double r, double g, double b);
   void SetOpacity(double d);
-  void SetImage(vvImage::Pointer image, double bg);
+  void SetImage(vvImage::Pointer image, double bg, bool modeBG=true);
   void Initialize();
   void UpdateColor();
   void UpdateSlice(int slicer, int slice);
@@ -56,6 +56,8 @@ class vvBinaryImageOverlayActor
   std::vector<double> mColor;
   double mAlpha;
   double mBackgroundValue;
+  double mForegroundValue;
+  bool m_modeBG;
   vtkLookupTable * mColorLUT;
 
   std::vector<vtkImageMapToRGBA *> mMapperList;
-- 
2.47.1