1 /******************************************************************************
2 * Copyright (c) 2011, Michael P. Gerlek (mpg@flaxen.com)
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34 
35 #pragma once
36 
37 #include <memory>
38 
39 #include <pdal/Stage.hpp>
40 
41 namespace pdal
42 {
43 
44 class Filter;
45 
46 class FilterWrapper;
47 
48 class PDAL_DLL Filter : public virtual Stage
49 {
50     friend class FilterWrapper;
51 
52     struct Args;
53 
54 public:
55     Filter();
56     ~Filter();
57 
58     Filter& operator=(const Filter&) = delete;
59     Filter(const Filter&) = delete;
60 
61 private:
62     virtual void l_initialize(PointTableRef table) final;
63     virtual void l_addArgs(ProgramArgs& args) final;
64     virtual void l_prepared(PointTableRef table) final;
65     virtual const expr::ConditionalExpression *whereExpr() const;
66     virtual WhereMergeMode mergeMode() const;
67     virtual PointViewSet run(PointViewPtr view);
filter(PointView &)68     virtual void filter(PointView& /*view*/)
69     {}
70 
71     friend PDAL_DLL std::istream& operator>>(std::istream& in, Filter::WhereMergeMode& mode);
72     friend PDAL_DLL std::ostream& operator<<(std::ostream& out, const Filter::WhereMergeMode& mode);
73 
74     std::unique_ptr<Args> m_args;
75 };
76 
77 }  // namespace pdal
78 
79