ENH: Adding itk::PolyLineCell

Modules/Core/Common/include/itkCommonEnums.h

@@ -147,6 +147,7 @@ class CommonEnums
     QUADRATIC_EDGE_CELL = 7,
     QUADRATIC_TRIANGLE_CELL = 8,
     LAST_ITK_CELL = 9,
+    POLYLINE_CELL = 10,
     MAX_ITK_CELLS = 255
   };
 

Modules/Core/Common/include/itkPolyLineCell.h

@@ -0,0 +1,139 @@
+/*=========================================================================
+ *
+ *  Copyright NumFOCUS
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *         http://www.apache.org/licenses/LICENSE-2.0.txt
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *=========================================================================*/
+#ifndef itkPolyLineCell_h
+#define itkPolyLineCell_h
+
+#include "itkVertexCell.h"
+namespace itk
+{
+/** \class PolyLineCell
+ *  \brief Represents a series of connected line segments for a Mesh.
+ *
+ * PolyLineCell represents a series of connected line segments for a Mesh.
+ *
+ * Template parameters for PolyLineCell:
+ *
+ * \tparam TPixelType The type associated with a point, cell, or boundary
+ * for use in storing its data.
+ *
+ * \tparam TCellTraits Type information of mesh containing cell.
+ *
+ * \ingroup MeshObjects
+ * \ingroup ITKCommon
+ */
+
+template <typename TCellInterface>
+class ITK_TEMPLATE_EXPORT PolyLineCell : public TCellInterface
+{
+public:
+  ITK_DISALLOW_COPY_AND_MOVE(PolyLineCell);
+
+  /** Standard class type aliases. */
+  itkCellCommonTypedefs(PolyLineCell);
+  itkCellInheritedTypedefs(TCellInterface);
+
+  /** Standard part of every itk Object. */
+  itkTypeMacro(PolyLineCell, CellInterface);
+
+  /** The type of boundary for this lines's vertices. */
+  using VertexType = VertexCell<TCellInterface>;
+  using VertexAutoPointer = typename VertexType::SelfAutoPointer;
+
+  /** Line-specific topology numbers. */
+  static constexpr unsigned int CellDimension = 1;
+
+  /** Implement the standard CellInterface. */
+  CellGeometryEnum
+  GetType() const override
+  {
+    return CellGeometryEnum::POLYLINE_CELL;
+  }
+  void
+  MakeCopy(CellAutoPointer &) const override;
+
+  unsigned int
+  GetDimension() const override;
+
+  unsigned int
+  GetNumberOfPoints() const override;
+
+  CellFeatureCount
+  GetNumberOfBoundaryFeatures(int dimension) const override;
+
+  bool
+  GetBoundaryFeature(int dimension, CellFeatureIdentifier, CellAutoPointer &) override;
+
+  void
+  ClearPoints();
+
+  void
+  SetPointIds(PointIdConstIterator first) override;
+
+  void
+  SetPointIds(PointIdConstIterator first, PointIdConstIterator last) override;
+
+  void
+  SetPointIds(int dummy, int num, PointIdConstIterator first);
+
+  void
+  SetPointId(int localId, PointIdentifier) override;
+  PointIdIterator
+  PointIdsBegin() override;
+
+  PointIdConstIterator
+  PointIdsBegin() const override;
+
+  PointIdIterator
+  PointIdsEnd() override;
+
+  PointIdConstIterator
+  PointIdsEnd() const override;
+
+  /** Line-specific interface. */
+  virtual CellFeatureCount
+  GetNumberOfVertices() const;
+
+  virtual bool
+  GetVertex(CellFeatureIdentifier, VertexAutoPointer &);
+
+  /** Visitor interface */
+  itkCellVisitMacro(CellGeometryEnum::LINE_CELL);
+
+  /** Constructor and destructor */
+  PolyLineCell() = default;
+  PolyLineCell(PointIdentifier NumberOfPoints)
+  {
+    for (PointIdentifier i = 0; i < NumberOfPoints; ++i)
+    {
+      m_PointIds.push_back(NumericTraits<PointIdentifier>::max());
+    }
+  }
+
+  ~PolyLineCell() override = default;
+
+protected:
+  /** For storing the points needed for a line segment. */
+  std::vector<PointIdentifier> m_PointIds;
+};
+} // end namespace itk
+
+#ifndef ITK_MANUAL_INSTANTIATION
+#  include "itkPolyLineCell.hxx"
+#endif
+
+#endif