ParaView-5.0.1: Added the source-tree to ThirdParty-dev and patched as described in the README file

Resolves bug-report http://bugs.openfoam.org/view.php?id=2098

ParaView-5.0.1/VTK/Charts/Core/vtkCompositeTransferFunctionItem.cxx

@@ -0,0 +1,148 @@
+/*=========================================================================
+
+  Program:   Visualization Toolkit
+  Module:    vtkCompositeTransferFunctionItem.cxx
+
+  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
+  All rights reserved.
+  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notice for more information.
+
+=========================================================================*/
+
+#include "vtkCallbackCommand.h"
+#include "vtkCommand.h"
+#include "vtkImageData.h"
+#include "vtkPiecewiseFunction.h"
+#include "vtkColorTransferFunction.h"
+#include "vtkCompositeTransferFunctionItem.h"
+#include "vtkObjectFactory.h"
+#include "vtkPen.h"
+#include "vtkPointData.h"
+#include "vtkPoints2D.h"
+
+// STD includes
+#include <algorithm>
+#include <cassert>
+
+//-----------------------------------------------------------------------------
+vtkStandardNewMacro(vtkCompositeTransferFunctionItem);
+
+//-----------------------------------------------------------------------------
+vtkCompositeTransferFunctionItem::vtkCompositeTransferFunctionItem()
+{
+  this->PolyLinePen->SetLineType(vtkPen::SOLID_LINE);
+  this->OpacityFunction = 0;
+}
+
+//-----------------------------------------------------------------------------
+vtkCompositeTransferFunctionItem::~vtkCompositeTransferFunctionItem()
+{
+  if (this->OpacityFunction)
+    {
+    this->OpacityFunction->RemoveObserver(this->Callback);
+    this->OpacityFunction->Delete();
+    this->OpacityFunction = 0;
+    }
+}
+
+//-----------------------------------------------------------------------------
+void vtkCompositeTransferFunctionItem::PrintSelf(ostream &os, vtkIndent indent)
+{
+  this->Superclass::PrintSelf(os, indent);
+  os << indent << "CompositeTransferFunction: ";
+  if (this->OpacityFunction)
+    {
+    os << endl;
+    this->OpacityFunction->PrintSelf(os, indent.GetNextIndent());
+    }
+  else
+    {
+    os << "(none)" << endl;
+    }
+}
+
+//-----------------------------------------------------------------------------
+void vtkCompositeTransferFunctionItem::ComputeBounds(double* bounds)
+{
+  this->Superclass::ComputeBounds(bounds);
+  if (this->OpacityFunction)
+    {
+    double* opacityRange = this->OpacityFunction->GetRange();
+    bounds[0] = std::min(bounds[0], opacityRange[0]);
+    bounds[1] = std::max(bounds[1], opacityRange[1]);
+    }
+}
+
+//-----------------------------------------------------------------------------
+void vtkCompositeTransferFunctionItem::SetOpacityFunction(vtkPiecewiseFunction* opacity)
+{
+  if (opacity == this->OpacityFunction)
+    {
+    return;
+    }
+  if (this->OpacityFunction)
+    {
+    this->OpacityFunction->RemoveObserver(this->Callback);
+    }
+  vtkSetObjectBodyMacro(OpacityFunction, vtkPiecewiseFunction, opacity);
+  if (opacity)
+    {
+    opacity->AddObserver(vtkCommand::ModifiedEvent, this->Callback);
+    }
+  this->ScalarsToColorsModified(this->OpacityFunction, vtkCommand::ModifiedEvent, 0);
+}
+
+//-----------------------------------------------------------------------------
+void vtkCompositeTransferFunctionItem::ComputeTexture()
+{
+  this->Superclass::ComputeTexture();
+  double bounds[4];
+  this->GetBounds(bounds);
+  if (bounds[0] == bounds[1]
+      || !this->OpacityFunction)
+    {
+    return;
+    }
+  if (this->Texture == 0)
+    {
+    this->Texture = vtkImageData::New();
+    }
+
+  const int dimension = this->GetTextureWidth();
+  double* values = new double[dimension];
+  this->OpacityFunction->GetTable(bounds[0], bounds[1], dimension, values);
+  unsigned char* ptr =
+    reinterpret_cast<unsigned char*>(this->Texture->GetScalarPointer(0,0,0));
+  // TBD: maybe the shape should be defined somewhere else...
+  if (this->MaskAboveCurve || this->PolyLinePen->GetLineType() != vtkPen::SOLID_LINE)
+    {
+    this->Shape->SetNumberOfPoints(dimension);
+    double step = (bounds[1] - bounds[0]) / dimension;
+    for (int i = 0; i < dimension; ++i)
+      {
+      ptr[3] = static_cast<unsigned char>(values[i] * this->Opacity * 255);
+      if (values[i] < 0. || values[i] > 1.)
+        {
+        vtkWarningMacro( << "Opacity at point " << i << " is " << values[i]
+                         << " which is outside the valid range of [0,1]");
+        }
+      this->Shape->SetPoint(i, bounds[0] + step * i, values[i]);
+      ptr+=4;
+      }
+    }
+  else
+    {
+    for (int i = 0; i < dimension; ++i)
+      {
+      ptr[3] = static_cast<unsigned char>(values[i] * this->Opacity * 255);
+      assert(values[i] <= 1. && values[i] >= 0.);
+      ptr+=4;
+      }
+    }
+  delete [] values;
+  return;
+}