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DistanceOp.h
1 /**********************************************************************
2 * $Id: DistanceOp.h 3259 2011-03-02 13:45:13Z strk $
3 *
4 * GEOS - Geometry Engine Open Source
5 * http://geos.refractions.net
6 *
7 * Copyright (C) 2011 Sandro Santilli <strk@keybit.net>
8 * Copyright (C) 2006 Refractions Research Inc.
9 *
10 * This is free software; you can redistribute and/or modify it under
11 * the terms of the GNU Lesser General Public Licence as published
12 * by the Free Software Foundation.
13 * See the COPYING file for more information.
14 *
15 **********************************************************************
16 *
17 * Last port: operation/distance/DistanceOp.java r335 (JTS-1.12-)
18 *
19 **********************************************************************/
20
21 #ifndef GEOS_OP_DISTANCE_DISTANCEOP_H
22 #define GEOS_OP_DISTANCE_DISTANCEOP_H
23
24 #include <geos/export.h>
25
26 #include <geos/algorithm/PointLocator.h> // for composition
27
28 #include <vector>
29
30 #ifdef _MSC_VER
31 #pragma warning(push)
32 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
33 #endif
34
35 // Forward declarations
36 namespace geos {
37 namespace geom {
38 class Coordinate;
39 class Polygon;
40 class LineString;
41 class Point;
42 class Geometry;
43 class CoordinateSequence;
44 }
45 namespace operation {
46 namespace distance {
47 class GeometryLocation;
48 }
49 }
50 }
51
52
53 namespace geos {
54 namespace operation { // geos::operation
55 namespace distance { // geos::operation::distance
56
75 class GEOS_DLL DistanceOp {
76 public:
87 static double distance(const geom::Geometry& g0,
88 const geom::Geometry& g1);
89
91 static double distance(const geom::Geometry *g0,
92 const geom::Geometry *g1);
93
104 static bool isWithinDistance(const geom::Geometry& g0,
105 const geom::Geometry& g1,
106 double distance);
107
120 static geom::CoordinateSequence* nearestPoints(
121 const geom::Geometry *g0,
122 const geom::Geometry *g1);
123
137 static geom::CoordinateSequence* closestPoints(
138 const geom::Geometry *g0,
139 const geom::Geometry *g1);
140
142 DistanceOp(const geom::Geometry *g0, const geom::Geometry *g1);
143
152 DistanceOp(const geom::Geometry& g0, const geom::Geometry& g1);
153
164 DistanceOp(const geom::Geometry& g0, const geom::Geometry& g1,
165 double terminateDistance);
166
167 ~DistanceOp();
168
174 double distance();
175
185 geom::CoordinateSequence* closestPoints();
186
195 geom::CoordinateSequence* nearestPoints();
196
197 private:
198
211 std::vector<GeometryLocation*>* nearestLocations();
212
213 // input (TODO: use two references instead..)
214 std::vector<geom::Geometry const*> geom;
215 double terminateDistance;
216
217 // working
218 algorithm::PointLocator ptLocator;
219 // TODO: use auto_ptr
220 std::vector<GeometryLocation*> *minDistanceLocation;
221 double minDistance;
222
223 // memory management
224 std::vector<geom::Coordinate *> newCoords;
225
226
227 void updateMinDistance(std::vector<GeometryLocation*>& locGeom,
228 bool flip);
229
230 void computeMinDistance();
231
232 void computeContainmentDistance();
233
234 void computeInside(std::vector<GeometryLocation*> *locs,
235 const std::vector<const geom::Polygon*>& polys,
236 std::vector<GeometryLocation*> *locPtPoly);
237
238 void computeInside(GeometryLocation *ptLoc,
239 const geom::Polygon *poly,
240 std::vector<GeometryLocation*> *locPtPoly);
241
246 void computeFacetDistance();
247
248 void computeMinDistanceLines(
249 const std::vector<const geom::LineString*>& lines0,
250 const std::vector<const geom::LineString*>& lines1,
251 std::vector<GeometryLocation*>& locGeom);
252
253 void computeMinDistancePoints(
254 const std::vector<const geom::Point*>& points0,
255 const std::vector<const geom::Point*>& points1,
256 std::vector<GeometryLocation*>& locGeom);
257
258 void computeMinDistanceLinesPoints(
259 const std::vector<const geom::LineString*>& lines0,
260 const std::vector<const geom::Point*>& points1,
261 std::vector<GeometryLocation*>& locGeom);
262
263 void computeMinDistance(const geom::LineString *line0,
264 const geom::LineString *line1,
265 std::vector<GeometryLocation*>& locGeom);
266
267 void computeMinDistance(const geom::LineString *line,
268 const geom::Point *pt,
269 std::vector<GeometryLocation*>& locGeom);
270 };
271
272
273 } // namespace geos::operation::distance
274 } // namespace geos::operation
275 } // namespace geos
276
277 #ifdef _MSC_VER
278 #pragma warning(pop)
279 #endif
280
281 #endif // GEOS_OP_DISTANCE_DISTANCEOP_H
282
283 /**********************************************************************
284 * $Log$
285 * Revision 1.1 2006/03/21 17:55:01 strk
286 * opDistance.h header split
287 *
288 **********************************************************************/
289