Introduced ApproximateUnbounded_2 concept

Arrangement_on_surface_2/doc/Arrangement_on_surface_2/Concepts/AosApproximateUnboundedTraits_2.h

@@ -0,0 +1,40 @@
+/*! \ingroup PkgArrangementOnSurface2ConceptsTraits
+ * \cgalConcept
+ *
+ * The concept `AosApproximateUnboundedTraits_2` refines the concept
+ * `AosApproximateTraits_2`. A model of this concept is able to approximate a
+ * curve constrained to a given bounding box (in addition to the ability to
+ * approximate a point and a curve without constraints).
+ *
+ * \cgalRefines{AosApproximateTraits_2}
+ *
+ * \cgalHasModelsBegin
+ * \cgalHasModels{CGAL::Arr_linear_traits_2<Kernel>}
+ * \cgalHasModelsEnd
+ *
+ * \sa `AosApproximateTraits_2`
+ * \sa `draw()`
+ */
+class AosApproximateUnboundedTraits_2 {
+public:
+  /// \name Types
+  /// @{
+
+  /// @}
+
+  /// \name Functor Types
+  /// @{
+
+  /// models the concept `AosTraits::ApproximateUnbounded_2`.
+  typedef unspecified_type Approximate_2;
+
+  /// @}
+
+  /// \name Accessing Functor Objects
+  /// @{
+
+  ///
+  Approximate_2 approximate_2_object() const;
+
+  /// @}
+}

Arrangement_on_surface_2/doc/Arrangement_on_surface_2/Concepts/AosTraits--ApproximateUnbounded_2.h

@@ -0,0 +1,49 @@
+namespace AosTraits {
+
+/*! \ingroup PkgArrangementOnSurface2ConceptsFunctionObjects
+ * \cgalConcept
+ *
+ * \cgalRefines{Approximate_2}
+ *
+ * \cgalHasModelsBegin
+ * \cgalHasModels{AosApproximatePointTraits_2::Approximate_2}
+ * \cgalHasModels{AosApproximateTraits_2::Approximate_2}
+ * \cgalHasModels{AosApproximateUnboundedTraits_2::Approximate_2}
+ * \cgalHasModelsEnd
+ */
+class ApproximateUnbounded_2 {
+public:
+  /// \name Operations
+  /// A model of this concept must provide:
+  /// @{
+
+  /*! approximates a given \f$x\f$-monotone curve constrained to a bounding
+   * box. It computes one or more sequences of approximate points that represent
+   * the disconnected portions of a polyline that approximates `xcv` within the
+   * bounding box `bbox`, and inserts them into output containers given through
+   * the output iterator `oi`.  The first point of the first sequence and the
+   * last point of the last sequence are always approximations of the endpoints
+   * of the given curve.
+   *
+   * \param xcv The exact \f$x\f$-monotone curve.
+   * \param error The error bound of the polyline approximation. This is the
+   *        Hausdorff distance between the curve and the polyline that
+   *        approximates the curve.
+   * \param oi An output iterator for the output containers.
+   * \param bbox the bounding box.
+   * \param l2r A Boolean flag that indicates whether the curve direction is
+   *        left to right.
+   * \return The past-the-end iterator of the output container.
+   *
+   * \pre Dereferencing `oi` must yield an object the type of which is a
+   *      container, where the value type of this container is
+   *      `AosApproximateTraits_2::Approximate_point_2`.
+   */
+  template <typename OutputIterator>
+  OutputIterator operator()(const X_monotone_curve_2& xcv, double error, OutputIterator oi,
+                            const BBox& bbox, bool l2r = true) const;
+
+  /// @}
+}; /* end AosTraits::Approximate_2 */
+
+}

Arrangement_on_surface_2/doc/Arrangement_on_surface_2/Concepts/AosTraits--Approximate_2.h

@@ -36,7 +36,7 @@ public:
    * \return The past-the-end iterator of the output container.
    *
    * \pre Dereferencing `oi` must yield an object of type
-   *      `Arr_conic_traits_2::Approximate_point_2`.
+   *      `AosApproximateTraits_2::Approximate_point_2`.
    */
   template <typename OutputIterator>
   OutputIterator operator()(const X_monotone_curve_2& xcv, double error,

Arrangement_on_surface_2/doc/Arrangement_on_surface_2/PackageDescription.txt

@@ -113,6 +113,7 @@ implemented as peripheral classes or as free (global) functions.
 
 - `AosApproximateTraits_2`
 - `AosApproximatePointTraits_2`
+- `AosApproximateUnboundedTraits_2`
 - `AosBasicTopologyTraits`
 - `AosBasicTraits_2`
 - `AosBottomSideTraits_2`
@@ -168,6 +169,7 @@ implemented as peripheral classes or as free (global) functions.
 
 - `AosTraits::Approximate_2`
 - `AosTraits::ApproximatePoint_2`
+- `AosTraits::ApproximateUnbounded_2`
 - `AosTraits::AreMergeable_2`
 - `AosTraits::CompareX_2`
 - `AosTraits::CompareXy_2`