Line data Source code
1 : /******************************************************************************
2 : *
3 : * Project: WAsP Translator
4 : * Purpose: Definition of classes for OGR .map driver.
5 : * Author: Vincent Mora, vincent dot mora at oslandia dot com
6 : *
7 : ******************************************************************************
8 : * Copyright (c) 2014, Oslandia <info at oslandia dot com>
9 : *
10 : * SPDX-License-Identifier: MIT
11 : ****************************************************************************/
12 :
13 : #ifndef OGR_WASP_H_INCLUDED
14 : #define OGR_WASP_H_INCLUDED
15 :
16 : #include "ogrsf_frmts.h"
17 :
18 : #include <memory>
19 : #include <fstream>
20 : #include <vector>
21 :
22 : /************************************************************************/
23 : /* OGRWAsPLayer */
24 : /************************************************************************/
25 :
26 : class OGRWAsPLayer final : public OGRLayer,
27 : public OGRGetNextFeatureThroughRaw<OGRWAsPLayer>
28 : {
29 : /* stuff for polygon processing */
30 :
31 : /* note if shared ptr are available, replace the ptr in the two structs */
32 : /* and remove deletion of array elements in ~OGRWAsPLayer() */
33 : struct Zone
34 : {
35 : OGREnvelope oEnvelope;
36 : OGRPolygon *poPolygon;
37 : double dfZ;
38 : };
39 :
40 : struct Boundary
41 : {
42 : OGRLineString *poLine;
43 : double dfLeft;
44 : double dfRight;
45 : };
46 :
47 : GDALDataset *m_poDS = nullptr;
48 : const bool bMerge;
49 : std::vector<Zone> oZones{};
50 : std::vector<Boundary> oBoundaries{};
51 :
52 45 : static bool isEqual(const double &dfRouhness1, const double &dfRouhness2)
53 : {
54 45 : return fabs(dfRouhness1 - dfRouhness2) < 1e-3;
55 : }
56 :
57 : /* end of stuff for polygon processing */
58 :
59 : int iFeatureCount{};
60 :
61 : const CPLString sName;
62 : VSILFILE *hFile{};
63 :
64 : /* for roughness zone, two fields for linestrings (left/right), one for
65 : * polygons */
66 : /* for elevation, one field (height) */
67 : const CPLString sFirstField;
68 : const CPLString sSecondField;
69 : const CPLString sGeomField;
70 : int iFirstFieldIdx{};
71 : int iSecondFieldIdx{};
72 : int iGeomFieldIdx{};
73 :
74 : OGRFeatureDefn *poLayerDefn{};
75 : OGRSpatialReference *poSpatialReference{};
76 :
77 : vsi_l_offset iOffsetFeatureBegin{};
78 :
79 : enum OpenMode
80 : {
81 : READ_ONLY,
82 : WRITE_ONLY
83 : };
84 :
85 : OpenMode eMode = READ_ONLY;
86 :
87 : std::unique_ptr<double> pdfTolerance{};
88 : std::unique_ptr<double> pdfAdjacentPointTolerance{};
89 : std::unique_ptr<double> pdfPointToCircleRadius{};
90 :
91 : OGRErr WriteRoughness(OGRLineString *, const double &dfZleft,
92 : const double &dfZright);
93 : OGRErr WriteRoughness(OGRPolygon *, const double &dfZ);
94 : OGRErr WriteRoughness(OGRGeometry *, const double &dfZleft,
95 : const double &dfZright);
96 :
97 : OGRErr WriteElevation(OGRLineString *, const double &dfZ);
98 : OGRErr WriteElevation(OGRGeometry *, const double &dfZ);
99 :
100 : static double AvgZ(OGRLineString *poGeom);
101 : static double AvgZ(OGRPolygon *poGeom);
102 : static double AvgZ(OGRGeometryCollection *poGeom);
103 : static double AvgZ(OGRGeometry *poGeom);
104 :
105 : /* return a simplified line (caller is responsible for resource)
106 : *
107 : * if pdfTolerance is not NULL,
108 : * calls GEOS simplify
109 : *
110 : * if pdfAdjacentPointTolerance is not NULL,
111 : * remove consecutive points that are less than tolerance apart
112 : * in x and y
113 : *
114 : * if pdfPointToCircleRadius is not NULL,
115 : * lines that have been simplified to a point are converted to a 8 pt
116 : * circle
117 : * */
118 : OGRLineString *Simplify(const OGRLineString &line) const;
119 :
120 : OGRFeature *GetNextRawFeature();
121 :
122 : CPL_DISALLOW_COPY_ASSIGN(OGRWAsPLayer)
123 :
124 : public:
125 : /* For writing */
126 : /* Takes ownership of poTolerance */
127 : OGRWAsPLayer(GDALDataset *poDS, const char *pszName, VSILFILE *hFile,
128 : OGRSpatialReference *poSpatialRef,
129 : const CPLString &sFirstField, const CPLString &sSecondField,
130 : const CPLString &sGeomField, bool bMerge, double *pdfTolerance,
131 : double *pdfAdjacentPointTolerance,
132 : double *pdfPointToCircleRadius);
133 :
134 : /* For reading */
135 : OGRWAsPLayer(GDALDataset *poDS, const char *pszName, VSILFILE *hFile,
136 : OGRSpatialReference *poSpatialRef);
137 :
138 : virtual ~OGRWAsPLayer();
139 :
140 240 : virtual OGRFeatureDefn *GetLayerDefn() override
141 : {
142 240 : return poLayerDefn;
143 : }
144 :
145 : virtual void ResetReading() override;
146 : virtual int TestCapability(const char *) override;
147 :
148 : virtual OGRErr CreateField(const OGRFieldDefn *poField,
149 : int bApproxOK = TRUE) override;
150 : virtual OGRErr CreateGeomField(const OGRGeomFieldDefn *poGeomField,
151 : int bApproxOK = TRUE) override;
152 :
153 : virtual OGRErr ICreateFeature(OGRFeature *poFeature) override;
154 :
155 19 : DEFINE_GET_NEXT_FEATURE_THROUGH_RAW(OGRWAsPLayer)
156 :
157 10 : virtual const char *GetName() override
158 : {
159 10 : return sName.c_str();
160 : }
161 :
162 10 : GDALDataset *GetDataset() override
163 : {
164 10 : return m_poDS;
165 : }
166 : };
167 :
168 : /************************************************************************/
169 : /* OGRWAsPDataSource */
170 : /************************************************************************/
171 :
172 : class OGRWAsPDataSource final : public GDALDataset
173 : {
174 : CPLString sFilename{};
175 : VSILFILE *hFile{};
176 : std::unique_ptr<OGRWAsPLayer> oLayer{};
177 :
178 : void GetOptions(CPLString &sFirstField, CPLString &sSecondField,
179 : CPLString &sGeomField, bool &bMerge) const;
180 :
181 : CPL_DISALLOW_COPY_ASSIGN(OGRWAsPDataSource)
182 :
183 : public:
184 : /** @note takes ownership of hFile (i.e. responsibility for closing) */
185 : OGRWAsPDataSource(const char *pszName, VSILFILE *hFile);
186 : virtual ~OGRWAsPDataSource();
187 :
188 1 : virtual int GetLayerCount() override
189 : {
190 1 : return oLayer.get() ? 1 : 0;
191 : }
192 :
193 : virtual OGRLayer *GetLayer(int) override;
194 : virtual OGRLayer *GetLayerByName(const char *) override;
195 :
196 : OGRLayer *ICreateLayer(const char *pszName,
197 : const OGRGeomFieldDefn *poGeomFieldDefn,
198 : CSLConstList papszOptions) override;
199 :
200 : virtual int TestCapability(const char *) override;
201 : OGRErr Load(bool bSilent = false);
202 : };
203 :
204 : #endif /* ndef OGR_WASP_H_INCLUDED */
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