--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/Deprecated/Radiography/RadiographyAlphaLayer.cpp	Wed Apr 29 20:43:09 2020 +0200
@@ -0,0 +1,152 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2020 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 "RadiographyAlphaLayer.h"
+
+#include "RadiographyScene.h"
+
+#include <Core/Compatibility.h>
+#include <Core/Images/Image.h>
+#include <Core/OrthancException.h>
+
+#include "../Toolbox/ImageGeometry.h"
+
+namespace OrthancStone
+{
+
+  void RadiographyAlphaLayer::SetAlpha(Orthanc::ImageAccessor* image)
+  {
+    std::unique_ptr<Orthanc::ImageAccessor> raii(image);
+
+    if (image == NULL)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer);
+    }
+
+    if (image->GetFormat() != Orthanc::PixelFormat_Grayscale8)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
+    }
+
+    SetSize(image->GetWidth(), image->GetHeight());
+
+#if __cplusplus < 201103L
+    alpha_.reset(raii.release());
+#else
+    alpha_ = std::move(raii);
+#endif
+
+    BroadcastMessage(RadiographyLayer::LayerEditedMessage(*this));
+  }
+
+  void RadiographyAlphaLayer::Render(Orthanc::ImageAccessor& buffer,
+                                     const AffineTransform2D& viewTransform,
+                                     ImageInterpolation interpolation,
+                                     float windowCenter,
+                                     float windowWidth,
+                                     bool applyWindowing) const
+  {
+    if (alpha_.get() == NULL)
+    {
+      return;
+    }
+
+    if (buffer.GetFormat() != Orthanc::PixelFormat_Float32)
+    {
+      throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat);
+    }
+
+    unsigned int cropX, cropY, cropWidth, cropHeight;
+    GetCrop(cropX, cropY, cropWidth, cropHeight);
+
+    const AffineTransform2D t = AffineTransform2D::Combine(
+          viewTransform, GetTransform(),
+          AffineTransform2D::CreateOffset(cropX, cropY));
+
+    Orthanc::ImageAccessor cropped;
+    alpha_->GetRegion(cropped, cropX, cropY, cropWidth, cropHeight);
+
+    Orthanc::Image tmp(Orthanc::PixelFormat_Grayscale8, buffer.GetWidth(), buffer.GetHeight(), false);
+
+    unsigned int x1, y1, x2, y2;
+
+    if (!OrthancStone::GetProjectiveTransformExtent(x1, y1, x2, y2,
+                                                    t.GetHomogeneousMatrix(),
+                                                    cropped.GetWidth(),
+                                                    cropped.GetHeight(),
+                                                    buffer.GetWidth(),
+                                                    buffer.GetHeight()))
+    {
+      return;  // layer is outside the buffer
+    }
+
+    t.Apply(tmp, cropped, interpolation, true /* clear */);
+
+    float value = foreground_;
+
+    if (!applyWindowing) // if applying the windowing, it means we are ie rendering the image for a realtime visualization -> the foreground_ value is the value we want to see on the screen -> don't change it
+    {
+      // if not applying the windowing, it means ie that we are saving a dicom image to file and the windowing will be applied by a viewer later on -> we want the "foreground" value to be correct once the windowing will be applied
+      value = windowCenter - windowWidth/2 + (foreground_ / 65535.0f) * windowWidth;
+
+      if (value < 0.0f)
+      {
+        value = 0.0f;
+      }
+      if (value > 65535.0f)
+      {
+        value = 65535.0f;
+      }
+    }
+
+    for (unsigned int y = y1; y <= y2; y++)
+    {
+      float *q = reinterpret_cast<float*>(buffer.GetRow(y)) + x1;
+      const uint8_t *p = reinterpret_cast<uint8_t*>(tmp.GetRow(y)) + x1;
+
+      for (unsigned int x = x1; x <= x2; x++, p++, q++)
+      {
+        float a = static_cast<float>(*p) / 255.0f;
+
+        *q = (a * value + (1.0f - a) * (*q));
+      }
+    }
+  }
+
+  bool RadiographyAlphaLayer::GetRange(float& minValue,
+                                       float& maxValue) const
+  {
+    minValue = 0;
+    maxValue = 0;
+
+    if (foreground_ < 0)
+    {
+      minValue = foreground_;
+    }
+
+    if (foreground_ > 0)
+    {
+      maxValue = foreground_;
+    }
+
+    return true;
+  }
+}