GEOS  3.11.0beta2
DefaultCoordinateSequenceFactory.h
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2  *
3  * GEOS - Geometry Engine Open Source
4  * http://geos.osgeo.org
5  *
6  * Copyright (C) 2019 Daniel Baston
7  *
8  * This is free software; you can redistribute and/or modify it under
9  * the terms of the GNU Lesser General Public Licence as published
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14 
15 #pragma once
16 
17 #include <geos/geom/CoordinateSequenceFactory.h>
18 #include <geos/geom/CoordinateArraySequence.h>
19 #include <geos/geom/FixedSizeCoordinateSequence.h>
20 
21 namespace geos {
22 namespace geom {
23 
24 class GEOS_DLL DefaultCoordinateSequenceFactory : public CoordinateSequenceFactory {
25 public:
26 
27  std::unique_ptr<CoordinateSequence> create() const final override {
28  return detail::make_unique<CoordinateArraySequence>();
29  }
30 
31  std::unique_ptr<CoordinateSequence> create(std::vector<Coordinate> *coords, std::size_t dims = 0) const final override {
32  return detail::make_unique<CoordinateArraySequence>(coords, dims);
33  }
34 
35  std::unique_ptr <CoordinateSequence> create(std::vector <Coordinate> &&coords, std::size_t dims = 0) const final override {
36  return detail::make_unique<CoordinateArraySequence>(std::move(coords), dims);
37  }
38 
39  std::unique_ptr <CoordinateSequence> create(std::size_t size, std::size_t dims = 0) const final override {
40  switch(size) {
41  case 5: return detail::make_unique<FixedSizeCoordinateSequence<5>>(dims);
42  case 4: return detail::make_unique<FixedSizeCoordinateSequence<4>>(dims);
43  case 3: return detail::make_unique<FixedSizeCoordinateSequence<3>>(dims);
44  case 2: return detail::make_unique<FixedSizeCoordinateSequence<2>>(dims);
45  case 1: return detail::make_unique<FixedSizeCoordinateSequence<1>>(dims);
46  default:
47  return detail::make_unique<CoordinateArraySequence>(size, dims);
48  }
49  }
50 
51  std::unique_ptr <CoordinateSequence> create(const CoordinateSequence &coordSeq) const final override {
52  auto cs = create(coordSeq.size(), coordSeq.getDimension());
53  for (std::size_t i = 0; i < cs->size(); i++) {
54  cs->setAt(coordSeq[i], i);
55  }
56  return cs;
57  }
58 
59  static const CoordinateSequenceFactory *instance();
60 };
61 
62 }
63 }
64 
CoordinateArraySequenceFactory DefaultCoordinateSequenceFactory
This is for backward API compatibility.
Definition: CoordinateArraySequenceFactory.h:82
Basic namespace for all GEOS functionalities.
Definition: Angle.h:25