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34 
35 #pragma once
36 
37 #include <pdal/Filter.hpp>
38 #include <pdal/util/ProgramArgs.hpp>
39 
40 namespace pdal
41 {
42 
43 enum class SortOrder
44 {
45     ASC, // ascending
46     DESC // descending
47 };
48 
49 std::istream& operator >> (std::istream& in, SortOrder& order);
50 std::ostream& operator << (std::ostream& in, const SortOrder& order);
51 
52 
53 class PDAL_DLL SortFilter : public Filter
54 {
55 public:
SortFilter()56     SortFilter()
57     {}
58 
59     std::string getName() const;
60 
61 private:
62     // Dimension on which to sort.
63     Dimension::Id m_dim;
64     // Dimension name.
65     std::string m_dimName;
66 
67     // Sort order.
68     SortOrder m_order;
69 
70     virtual void addArgs(ProgramArgs& args);
71     virtual void prepared(PointTableRef table);
72     virtual void filter(PointView& view);
73 
74     SortFilter& operator=(const SortFilter&) = delete;
75     SortFilter(const SortFilter&) = delete;
76 };
77 
78 } // namespace pdal
79