[PL] added spatial position class

ProcessLib/SpatialPosition.h

+/**
+ * \copyright
+ * Copyright (c) 2012-2016, OpenGeoSys Community (http://www.opengeosys.org)
+ *            Distributed under a Modified BSD License.
+ *              See accompanying file LICENSE.txt or
+ *              http://www.opengeosys.org/project/license
+ *
+ */
+
+#ifndef PROCESSLIB_SPATIALPOSITION_H
+#define PROCESSLIB_SPATIALPOSITION_H
+
+#include <boost/optional.hpp>
+#include "MathLib/TemplatePoint.h"
+
+namespace ProcessLib
+{
+class SpatialPosition
+{
+public:
+    boost::optional<std::size_t> getNodeID() const { return _node_id; }
+    boost::optional<std::size_t> getElementID() const { return _element_id; }
+    boost::optional<unsigned> getIntegrationPoint() const
+    {
+        return _integration_point;
+    }
+    boost::optional<MathLib::TemplatePoint<double, 3>> const& getCoordinates()
+        const
+    {
+        return _coordinates;
+    }
+
+    void setNodeID(std::size_t node_id)
+    {
+        clear();
+        _node_id = node_id;
+    }
+
+    void setElementID(std::size_t element_id)
+    {
+        clear();
+        _element_id = element_id;
+    }
+
+    void setIntegrationPoint(unsigned integration_point)
+    {
+        assert(_element_id);
+        _integration_point = integration_point;
+    }
+
+    void setCoordinates(MathLib::TemplatePoint<double, 3> const& coordinates)
+    {
+        clear();
+        _coordinates = coordinates;
+    }
+
+    void setAll(
+        boost::optional<std::size_t> const& node_id,
+        boost::optional<std::size_t> const& element_id,
+        boost::optional<unsigned> const& integration_point,
+        boost::optional<MathLib::TemplatePoint<double, 3>> const& coordinates)
+    {
+        _node_id = node_id;
+        _element_id = element_id;
+        _integration_point = integration_point;
+        _coordinates = coordinates;
+    }
+
+    void clear()
+    {
+        _node_id = boost::none;
+        _element_id = boost::none;
+        _integration_point = boost::none;
+        _coordinates = boost::none;
+    }
+
+private:
+    boost::optional<std::size_t> _node_id;
+    boost::optional<std::size_t> _element_id;
+    boost::optional<unsigned> _integration_point;
+    boost::optional<MathLib::TemplatePoint<double, 3>> _coordinates;
+};
+
+}  // ProcessLib
+
+#endif  // PROCESSLIB_SPATIALPOSITION_H