/src/gdal/ogr/ogrtriangulatedsurface.cpp
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1  |  | /******************************************************************************  | 
2  |  |  *  | 
3  |  |  * Project:  OpenGIS Simple Features Reference Implementation  | 
4  |  |  * Purpose:  The OGRTriangulatedSurface geometry class.  | 
5  |  |  * Author:   Avyav Kumar Singh <avyavkumar at gmail dot com>  | 
6  |  |  *  | 
7  |  |  ******************************************************************************  | 
8  |  |  * Copyright (c) 2016, Avyav Kumar Singh <avyavkumar at gmail dot com>  | 
9  |  |  * Copyright (c) 2016, Even Rouault <even.roauult at spatialys.com>  | 
10  |  |  *  | 
11  |  |  * SPDX-License-Identifier: MIT  | 
12  |  |  ****************************************************************************/  | 
13  |  |  | 
14  |  | #include "ogr_geometry.h"  | 
15  |  | #include "ogr_p.h"  | 
16  |  | #include "ogr_api.h"  | 
17  |  |  | 
18  |  | /************************************************************************/  | 
19  |  | /*        OGRTriangulatedSurface( const OGRTriangulatedSurface& )       */  | 
20  |  | /************************************************************************/  | 
21  |  |  | 
22  |  | /**  | 
23  |  |  * \brief Copy constructor.  | 
24  |  |  *  | 
25  |  |  */  | 
26  |  |  | 
27  |  | OGRTriangulatedSurface::OGRTriangulatedSurface(  | 
28  |  |     const OGRTriangulatedSurface &other)  | 
29  | 0  |     : OGRPolyhedralSurface()  | 
30  | 0  | { | 
31  | 0  |     *this = other;  | 
32  | 0  | }  | 
33  |  |  | 
34  |  | /************************************************************************/  | 
35  |  | /*                 operator=( const OGRTriangulatedSurface&)            */  | 
36  |  | /************************************************************************/  | 
37  |  |  | 
38  |  | /**  | 
39  |  |  * \brief Assignment operator.  | 
40  |  |  *  | 
41  |  |  */  | 
42  |  |  | 
43  |  | OGRTriangulatedSurface &  | 
44  |  | OGRTriangulatedSurface::operator=(const OGRTriangulatedSurface &other)  | 
45  | 0  | { | 
46  | 0  |     if (this != &other)  | 
47  | 0  |     { | 
48  |  |         // We need to do it manually. We cannot rely on the = operator  | 
49  |  |         // of OGRPolyhedralSurface since it will be confused by a multipolygon  | 
50  |  |         // of triangles.  | 
51  | 0  |         OGRSurface::operator=(other);  | 
52  | 0  |         for (const auto *poPoly : other.oMP)  | 
53  | 0  |         { | 
54  | 0  |             OGRTriangulatedSurface::addGeometry(poPoly);  | 
55  | 0  |         }  | 
56  | 0  |     }  | 
57  | 0  |     return *this;  | 
58  | 0  | }  | 
59  |  |  | 
60  |  | /************************************************************************/  | 
61  |  | /*                               clone()                                */  | 
62  |  | /************************************************************************/  | 
63  |  |  | 
64  |  | OGRTriangulatedSurface *OGRTriangulatedSurface::clone() const  | 
65  |  |  | 
66  | 0  | { | 
67  | 0  |     return new (std::nothrow) OGRTriangulatedSurface(*this);  | 
68  | 0  | }  | 
69  |  |  | 
70  |  | /************************************************************************/  | 
71  |  | /*                          getGeometryName()                           */  | 
72  |  | /************************************************************************/  | 
73  |  |  | 
74  |  | /**  | 
75  |  |  * \brief Returns the geometry name of the TriangulatedSurface  | 
76  |  |  *  | 
77  |  |  * @return "TIN"  | 
78  |  |  *  | 
79  |  |  */  | 
80  |  |  | 
81  |  | const char *OGRTriangulatedSurface::getGeometryName() const  | 
82  | 1  | { | 
83  | 1  |     return "TIN";  | 
84  | 1  | }  | 
85  |  |  | 
86  |  | /************************************************************************/  | 
87  |  | /*                          getGeometryType()                           */  | 
88  |  | /************************************************************************/  | 
89  |  |  | 
90  |  | /**  | 
91  |  |  * \brief Returns the WKB Type of TriangulatedSurface  | 
92  |  |  *  | 
93  |  |  */  | 
94  |  |  | 
95  |  | OGRwkbGeometryType OGRTriangulatedSurface::getGeometryType() const  | 
96  | 0  | { | 
97  | 0  |     if ((flags & OGR_G_3D) && (flags & OGR_G_MEASURED))  | 
98  | 0  |         return wkbTINZM;  | 
99  | 0  |     else if (flags & OGR_G_MEASURED)  | 
100  | 0  |         return wkbTINM;  | 
101  | 0  |     else if (flags & OGR_G_3D)  | 
102  | 0  |         return wkbTINZ;  | 
103  | 0  |     else  | 
104  | 0  |         return wkbTIN;  | 
105  | 0  | }  | 
106  |  |  | 
107  |  | /************************************************************************/  | 
108  |  | /*                         isCompatibleSubType()                        */  | 
109  |  | /************************************************************************/  | 
110  |  |  | 
111  |  | //! @cond Doxygen_Suppress  | 
112  |  | OGRBoolean  | 
113  |  | OGRTriangulatedSurface::isCompatibleSubType(OGRwkbGeometryType eSubType) const  | 
114  | 0  | { | 
115  | 0  |     return wkbFlatten(eSubType) == wkbTriangle;  | 
116  | 0  | }  | 
117  |  |  | 
118  |  | //! @endcond  | 
119  |  |  | 
120  |  | /************************************************************************/  | 
121  |  | /*                         getSubGeometryName()                         */  | 
122  |  | /************************************************************************/  | 
123  |  |  | 
124  |  | //! @cond Doxygen_Suppress  | 
125  |  | const char *OGRTriangulatedSurface::getSubGeometryName() const  | 
126  | 0  | { | 
127  | 0  |     return "TRIANGLE";  | 
128  | 0  | }  | 
129  |  |  | 
130  |  | //! @endcond  | 
131  |  |  | 
132  |  | /************************************************************************/  | 
133  |  | /*                         getSubGeometryType()                         */  | 
134  |  | /************************************************************************/  | 
135  |  |  | 
136  |  | //! @cond Doxygen_Suppress  | 
137  |  | OGRwkbGeometryType OGRTriangulatedSurface::getSubGeometryType() const  | 
138  | 0  | { | 
139  | 0  |     return wkbTriangle;  | 
140  | 0  | }  | 
141  |  |  | 
142  |  | //! @endcond  | 
143  |  |  | 
144  |  | /************************************************************************/  | 
145  |  | /*                            addGeometry()                             */  | 
146  |  | /************************************************************************/  | 
147  |  |  | 
148  |  | OGRErr OGRTriangulatedSurface::addGeometry(const OGRGeometry *poNewGeom)  | 
149  | 0  | { | 
150  |  |     // If the geometry is a polygon, check if it can be cast as a triangle  | 
151  | 0  |     if (EQUAL(poNewGeom->getGeometryName(), "POLYGON"))  | 
152  | 0  |     { | 
153  | 0  |         OGRErr eErr = OGRERR_FAILURE;  | 
154  | 0  |         OGRTriangle *poTriangle =  | 
155  | 0  |             new OGRTriangle(*(poNewGeom->toPolygon()), eErr);  | 
156  | 0  |         if (poTriangle != nullptr && eErr == OGRERR_NONE)  | 
157  | 0  |         { | 
158  | 0  |             eErr = addGeometryDirectly(poTriangle);  | 
159  |  | 
  | 
160  | 0  |             if (eErr != OGRERR_NONE)  | 
161  | 0  |                 delete poTriangle;  | 
162  |  | 
  | 
163  | 0  |             return eErr;  | 
164  | 0  |         }  | 
165  | 0  |         else  | 
166  | 0  |         { | 
167  | 0  |             delete poTriangle;  | 
168  | 0  |             return OGRERR_UNSUPPORTED_GEOMETRY_TYPE;  | 
169  | 0  |         }  | 
170  | 0  |     }  | 
171  |  |  | 
172  | 0  |     return OGRPolyhedralSurface::addGeometry(poNewGeom);  | 
173  | 0  | }  | 
174  |  |  | 
175  |  | /************************************************************************/  | 
176  |  | /*                     GetCasterToMultiPolygon()                        */  | 
177  |  | /************************************************************************/  | 
178  |  |  | 
179  |  | //! @cond Doxygen_Suppress  | 
180  |  | OGRPolyhedralSurfaceCastToMultiPolygon  | 
181  |  | OGRTriangulatedSurface::GetCasterToMultiPolygon() const  | 
182  | 0  | { | 
183  | 0  |     return OGRTriangulatedSurface::CastToMultiPolygonImpl;  | 
184  | 0  | }  | 
185  |  |  | 
186  |  | /************************************************************************/  | 
187  |  | /*                         CastToMultiPolygon()                         */  | 
188  |  | /************************************************************************/  | 
189  |  |  | 
190  |  | OGRMultiPolygon *  | 
191  |  | OGRTriangulatedSurface::CastToMultiPolygonImpl(OGRPolyhedralSurface *poTS)  | 
192  | 0  | { | 
193  | 0  |     OGRMultiPolygon *poMultiPolygon = new OGRMultiPolygon();  | 
194  | 0  |     poMultiPolygon->assignSpatialReference(poTS->getSpatialReference());  | 
195  |  | 
  | 
196  | 0  |     for (auto &&poSubGeom : *poTS)  | 
197  | 0  |     { | 
198  | 0  |         OGRPolygon *poPolygon = OGRSurface::CastToPolygon(poSubGeom);  | 
199  | 0  |         poMultiPolygon->addGeometryDirectly(poPolygon);  | 
200  | 0  |         poSubGeom = nullptr;  | 
201  | 0  |     }  | 
202  | 0  |     delete poTS;  | 
203  |  | 
  | 
204  | 0  |     return poMultiPolygon;  | 
205  | 0  | }  | 
206  |  |  | 
207  |  | //! @endcond  | 
208  |  |  | 
209  |  | /************************************************************************/  | 
210  |  | /*                     CastToPolyhedralSurface()                        */  | 
211  |  | /************************************************************************/  | 
212  |  |  | 
213  |  | /**  | 
214  |  |  * \brief Casts the OGRTriangulatedSurface to an OGRPolyhedralSurface  | 
215  |  |  *  | 
216  |  |  * The passed in geometry is consumed and a new one returned (or NULL in case  | 
217  |  |  * of failure)  | 
218  |  |  *  | 
219  |  |  * @param poTS the input geometry - ownership is passed to the method.  | 
220  |  |  * @return new geometry.  | 
221  |  |  */  | 
222  |  |  | 
223  |  | OGRPolyhedralSurface *  | 
224  |  | OGRTriangulatedSurface::CastToPolyhedralSurface(OGRTriangulatedSurface *poTS)  | 
225  | 0  | { | 
226  | 0  |     OGRPolyhedralSurface *poPS = new OGRPolyhedralSurface();  | 
227  | 0  |     poPS->assignSpatialReference(poTS->getSpatialReference());  | 
228  | 0  |     for (auto &&poSubGeom : *poTS)  | 
229  | 0  |     { | 
230  | 0  |         OGRPolygon *poPolygon = OGRSurface::CastToPolygon(poSubGeom);  | 
231  | 0  |         poPS->oMP.addGeometryDirectly(poPolygon);  | 
232  | 0  |         poSubGeom = nullptr;  | 
233  | 0  |     }  | 
234  | 0  |     delete poTS;  | 
235  | 0  |     return poPS;  | 
236  | 0  | }  |