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BufferParameters.h
1 /**********************************************************************
2 * $Id: BufferParameters.h 3300 2011-04-27 09:42:13Z strk $
3 *
4 * GEOS - Geometry Engine Open Source
5 * http://geos.refractions.net
6 *
7 * Copyright (C) 2009 Sandro Santilli <strk@keybit.net>
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************
15 *
16 * Last port: operation/buffer/BufferParameters.java r378 (JTS-1.12)
17 *
18 **********************************************************************/
19
20 #ifndef GEOS_OP_BUFFER_BUFFERPARAMETERS_H
21 #define GEOS_OP_BUFFER_BUFFERPARAMETERS_H
22
23 #include <geos/export.h>
24
25 //#include <vector>
26
27 //#include <geos/algorithm/LineIntersector.h> // for composition
28 //#include <geos/geom/Coordinate.h> // for composition
29 //#include <geos/geom/LineSegment.h> // for composition
30
31 #ifdef _MSC_VER
32 #pragma warning(push)
33 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
34 #endif
35
36 // Forward declarations
37 namespace geos {
38 namespace geom {
39 class CoordinateSequence;
40 class PrecisionModel;
41 }
42 namespace operation {
43 namespace buffer {
44 class OffsetCurveVertexList;
45 }
46 }
47 }
48
49 namespace geos {
50 namespace operation { // geos.operation
51 namespace buffer { // geos.operation.buffer
52
58 class GEOS_DLL BufferParameters
59 {
60
61 public:
62
64 enum EndCapStyle {
65
67 CAP_ROUND=1,
68
70 CAP_FLAT=2,
71
73 CAP_SQUARE=3
74 };
75
77 enum JoinStyle {
78
80 JOIN_ROUND=1,
81
83 JOIN_MITRE=2,
84
86 JOIN_BEVEL=3
87 };
88
92 //
97 static const int DEFAULT_QUADRANT_SEGMENTS = 8;
98
100 //
103 static const double DEFAULT_MITRE_LIMIT; // 5.0 (in .cpp file)
104
106 BufferParameters();
107
109 //
112 BufferParameters(int quadrantSegments);
113
117 //
121 BufferParameters(int quadrantSegments, EndCapStyle endCapStyle);
122
126 //
132 BufferParameters(int quadrantSegments, EndCapStyle endCapStyle,
133 JoinStyle joinStyle, double mitreLimit);
134
136 //
139 int getQuadrantSegments() const { return quadrantSegments; }
140
144 //
170 void setQuadrantSegments(int quadSegs);
171
175 //
180 static double bufferDistanceError(int quadSegs);
181
183 //
186 EndCapStyle getEndCapStyle() const { return endCapStyle; }
187
189 //
197 void setEndCapStyle(EndCapStyle style)
198 {
199 endCapStyle = style;
200 }
201
203 //
206 JoinStyle getJoinStyle() const { return joinStyle; }
207
211 //
214 //
217 void setJoinStyle(JoinStyle style)
218 {
219 joinStyle = style;
220 }
221
223 //
226 double getMitreLimit() const { return mitreLimit; }
227
229 //
241 void setMitreLimit(double limit)
242 {
243 mitreLimit = limit;
244 }
245
263 void setSingleSided(bool isSingleSided)
264 {
265 _isSingleSided = isSingleSided;
266 }
267
273 bool isSingleSided() const {
274 return _isSingleSided;
275 }
276
277
278 private:
279
281 int quadrantSegments;
282
284 EndCapStyle endCapStyle;
285
287 JoinStyle joinStyle;
288
290 double mitreLimit;
291
292 bool _isSingleSided;
293 };
294
295 } // namespace geos::operation::buffer
296 } // namespace geos::operation
297 } // namespace geos
298
299 #ifdef _MSC_VER
300 #pragma warning(pop)
301 #endif
302
303 #endif // ndef GEOS_OP_BUFFER_BUFFERPARAMETERS_H
304