--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Scene2D/LookupTableTextureSceneLayer.cpp	Thu May 23 20:04:33 2019 +0200
@@ -0,0 +1,183 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2019 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#include "LookupTableTextureSceneLayer.h"
+
+#include <Core/Images/Image.h>
+#include <Core/Images/ImageProcessing.h>
+#include <Core/OrthancException.h>
+
+namespace OrthancStone
+{
+  static void StringToVector(std::vector<uint8_t>& target,
+                             const std::string& source)
+  {
+    target.resize(source.size());
+
+    for (size_t i = 0; i < source.size(); i++)
+    {
+      target[i] = source[i];
+    }
+  }
+
+  
+  LookupTableTextureSceneLayer::LookupTableTextureSceneLayer(const Orthanc::ImageAccessor& texture)
+  {
+    {
+      std::auto_ptr<Orthanc::ImageAccessor> t(
+        new Orthanc::Image(Orthanc::PixelFormat_Float32, 
+                           texture.GetWidth(), 
+                           texture.GetHeight(), 
+                           false));
+
+      Orthanc::ImageProcessing::Convert(*t, texture);
+      SetTexture(t.release());
+    }
+
+    SetLookupTableGrayscale(1);
+    SetRange(0, 1);
+  }
+
+
+  void LookupTableTextureSceneLayer::SetLookupTableGrayscale(float alpha)
+  {
+    std::vector<uint8_t> rgb(3 * 256);
+
+    for (size_t i = 0; i < 256; i++)
+    {
+      rgb[3 * i] = i;
+      rgb[3 * i + 1] = i;
+      rgb[3 * i + 2] = i;
+    }
+
+    SetLookupTableRgb(rgb, alpha);
+  }  
+
+
+  void LookupTableTextureSceneLayer::SetLookupTableRgb(const std::vector<uint8_t>& lut,
+                                                       float alpha)
+  {
+    if (lut.size() != 3 * 256 ||
+        alpha < 0 ||
+        alpha > 1)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+
+    lut_.resize(4 * 256);
+
+    for (size_t i = 0; i < 256; i++)
+    {
+      // Premultiplied alpha
+      
+      if (i == 0)
+      {
+        // Make zero transparent
+        lut_[4 * i] = 0;        // R
+        lut_[4 * i + 1] = 0;    // G
+        lut_[4 * i + 2] = 0;    // B
+        lut_[4 * i + 3] = 0;    // A
+      }
+      else
+      {
+        float r = static_cast<float>(lut[3 * i]) * alpha;
+        float g = static_cast<float>(lut[3 * i + 1]) * alpha;
+        float b = static_cast<float>(lut[3 * i + 2]) * alpha;
+        
+        lut_[4 * i] = static_cast<uint8_t>(std::floor(r));
+        lut_[4 * i + 1] = static_cast<uint8_t>(std::floor(g));
+        lut_[4 * i + 2] = static_cast<uint8_t>(std::floor(b));
+        lut_[4 * i + 3] = static_cast<uint8_t>(std::floor(alpha * 255.0f));
+      }
+    }
+
+    IncrementRevision();
+  }
+
+
+  void LookupTableTextureSceneLayer::SetLookupTableRgb(const std::string& lut,
+                                                       float alpha)
+  {
+    std::vector<uint8_t> tmp;
+    StringToVector(tmp, lut);
+    SetLookupTableRgb(tmp, alpha);
+  }
+
+  
+  void LookupTableTextureSceneLayer::SetLookupTable(const std::vector<uint8_t>& lut)
+  {
+    if (lut.size() != 4 * 256)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+
+    lut_ = lut;
+
+    IncrementRevision();
+  }
+
+
+  void LookupTableTextureSceneLayer::SetLookupTable(const std::string& lut)
+  {
+    std::vector<uint8_t> tmp;
+    StringToVector(tmp, lut);
+    SetLookupTable(tmp);
+  }
+
+  
+  void LookupTableTextureSceneLayer::SetRange(float minValue,
+                                              float maxValue)
+  {
+    if (minValue > maxValue)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
+    }
+    else
+    {
+      minValue_ = minValue;
+      maxValue_ = maxValue;
+      IncrementRevision();
+    }
+  }
+    
+
+  void LookupTableTextureSceneLayer::FitRange()
+  {
+    Orthanc::ImageProcessing::GetMinMaxFloatValue(minValue_, maxValue_, GetTexture());
+    assert(minValue_ <= maxValue_);
+    
+    IncrementRevision();
+  }
+
+    
+  ISceneLayer* LookupTableTextureSceneLayer::Clone() const
+  {
+    std::auto_ptr<LookupTableTextureSceneLayer> cloned
+      (new LookupTableTextureSceneLayer(GetTexture()));
+
+    cloned->CopyParameters(*this);
+    cloned->minValue_ = minValue_;
+    cloned->maxValue_ = maxValue_;
+    cloned->lut_ = lut_;
+
+    return cloned.release();
+  }
+}