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<h1>OffsetCurveBuilder.h</h1> </div>
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<div class="contents">
<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/**********************************************************************</span>
<a name="l00002"></a>00002 <span class="comment"> * $Id: OffsetCurveBuilder.h 2779 2009-12-03 19:45:53Z mloskot $</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * GEOS - Geometry Engine Open Source</span>
<a name="l00005"></a>00005 <span class="comment"> * http://geos.refractions.net</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Copyright (C) 2009 Sandro Santilli <strk@keybit.net></span>
<a name="l00008"></a>00008 <span class="comment"> * Copyright (C) 2006-2007 Refractions Research Inc.</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * This is free software; you can redistribute and/or modify it under</span>
<a name="l00011"></a>00011 <span class="comment"> * the terms of the GNU Lesser General Public Licence as published</span>
<a name="l00012"></a>00012 <span class="comment"> * by the Free Software Foundation. </span>
<a name="l00013"></a>00013 <span class="comment"> * See the COPYING file for more information.</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> **********************************************************************</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> * Last port: operation/buffer/OffsetCurveBuilder.java rev. 1.30 (JTS-1.10)</span>
<a name="l00018"></a>00018 <span class="comment"> *</span>
<a name="l00019"></a>00019 <span class="comment"> **********************************************************************/</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#ifndef GEOS_OP_BUFFER_OFFSETCURVEBUILDER_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define GEOS_OP_BUFFER_OFFSETCURVEBUILDER_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <geos/export.h></span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include <vector></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="preprocessor">#include <geos/algorithm/LineIntersector.h></span> <span class="comment">// for composition</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <geos/geom/Coordinate.h></span> <span class="comment">// for composition</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include <geos/geom/LineSegment.h></span> <span class="comment">// for composition</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include <geos/operation/buffer/BufferParameters.h></span> <span class="comment">// for composition</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="comment">// Forward declarations</span>
<a name="l00034"></a>00034 <span class="keyword">namespace </span>geos {
<a name="l00035"></a>00035 <span class="keyword">namespace </span>geom {
<a name="l00036"></a>00036 <span class="keyword">class </span>CoordinateSequence;
<a name="l00037"></a>00037 <span class="keyword">class </span>PrecisionModel;
<a name="l00038"></a>00038 }
<a name="l00039"></a>00039 <span class="keyword">namespace </span>operation {
<a name="l00040"></a>00040 <span class="keyword">namespace </span>buffer {
<a name="l00041"></a>00041 <span class="keyword">class </span>OffsetCurveVertexList;
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044 }
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keyword">namespace </span>geos {
<a name="l00047"></a>00047 <span class="keyword">namespace </span>operation { <span class="comment">// geos.operation</span>
<a name="l00048"></a>00048 <span class="keyword">namespace </span>buffer { <span class="comment">// geos.operation.buffer</span>
<a name="l00049"></a>00049
<a name="l00066"></a><a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html">00066</a> <span class="keyword">class </span>GEOS_DLL <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a> {
<a name="l00067"></a>00067 <span class="keyword">public</span>:
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">/*</span>
<a name="l00070"></a>00070 <span class="comment"> * @param nBufParams buffer parameters, this object will</span>
<a name="l00071"></a>00071 <span class="comment"> * keep a reference to the passed parameters</span>
<a name="l00072"></a>00072 <span class="comment"> * so caller must make sure the object is</span>
<a name="l00073"></a>00073 <span class="comment"> * kept alive for the whole lifetime of</span>
<a name="l00074"></a>00074 <span class="comment"> * the buffer builder.</span>
<a name="l00075"></a>00075 <span class="comment"> */</span>
<a name="l00076"></a>00076 <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1PrecisionModel.html" title="Specifies the precision model of the Coordinate in a Geometry.">geom::PrecisionModel</a> *newPrecisionModel,
<a name="l00077"></a>00077 <span class="keyword">const</span> <a class="code" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html" title="Contains the parameters which describe how a buffer should be constructed.">BufferParameters</a>& bufParams);
<a name="l00078"></a>00078
<a name="l00079"></a>00079 ~<a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a>();
<a name="l00080"></a>00080
<a name="l00090"></a>00090 <span class="keywordtype">void</span> getLineCurve(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* inputPts,
<a name="l00091"></a>00091 <span class="keywordtype">double</span> distance,
<a name="l00092"></a>00092 std::vector<geom::CoordinateSequence*>& lineList);
<a name="l00093"></a>00093
<a name="l00110"></a>00110 <span class="keywordtype">void</span> getSingleSidedLineCurve(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>* inputPts,
<a name="l00111"></a>00111 <span class="keywordtype">double</span> distance, std::vector<geom::CoordinateSequence*>& lineList,
<a name="l00112"></a>00112 <span class="keywordtype">bool</span> leftSide, <span class="keywordtype">bool</span> rightSide ) ;
<a name="l00113"></a>00113
<a name="l00121"></a>00121 <span class="keywordtype">void</span> getRingCurve(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a> *inputPts, <span class="keywordtype">int</span> side,
<a name="l00122"></a>00122 <span class="keywordtype">double</span> distance,
<a name="l00123"></a>00123 std::vector<geom::CoordinateSequence*>& lineList);
<a name="l00124"></a>00124
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <span class="keyword">private</span>:
<a name="l00127"></a>00127
<a name="l00129"></a>00129 <span class="comment">//</span>
<a name="l00134"></a>00134 <span class="comment"></span> <span class="keywordtype">void</span> addMitreJoin(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a>& p,
<a name="l00135"></a>00135 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset0,
<a name="l00136"></a>00136 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset1,
<a name="l00137"></a>00137 <span class="keywordtype">double</span> distance);
<a name="l00138"></a>00138
<a name="l00140"></a>00140 <span class="comment">//</span>
<a name="l00149"></a>00149 <span class="comment"></span> <span class="keywordtype">void</span> addLimitedMitreJoin(
<a name="l00150"></a>00150 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset0,
<a name="l00151"></a>00151 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset1,
<a name="l00152"></a>00152 <span class="keywordtype">double</span> distance, <span class="keywordtype">double</span> mitreLimit);
<a name="l00153"></a>00153
<a name="l00157"></a>00157 <span class="comment">// </span>
<a name="l00161"></a>00161 <span class="comment"></span> <span class="keywordtype">void</span> addBevelJoin(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset0,
<a name="l00162"></a>00162 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset1);
<a name="l00163"></a>00163
<a name="l00164"></a>00164
<a name="l00168"></a>00168 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> CURVE_VERTEX_SNAP_DISTANCE_FACTOR; <span class="comment">// 1.0E-6;</span>
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> PI; <span class="comment">// 3.14159265358979</span>
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> MAX_CLOSING_SEG_LEN; <span class="comment">// 3.0</span>
<a name="l00173"></a>00173
<a name="l00178"></a>00178 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> OFFSET_SEGMENT_SEPARATION_FACTOR; <span class="comment">// 1.0E-3;</span>
<a name="l00179"></a>00179
<a name="l00184"></a>00184 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> INSIDE_TURN_VERTEX_SNAP_DISTANCE_FACTOR; <span class="comment">// 1.0E-3;</span>
<a name="l00185"></a>00185
<a name="l00190"></a>00190 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> MAX_CLOSING_SEG_FRACTION = 80;
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <a class="code" href="classgeos_1_1algorithm_1_1LineIntersector.html" title="A LineIntersector is an algorithm that can both test whether two line segments intersect and compute ...">algorithm::LineIntersector</a> li;
<a name="l00193"></a>00193
<a name="l00198"></a>00198 <span class="keywordtype">double</span> filletAngleQuantum;
<a name="l00199"></a>00199
<a name="l00204"></a>00204 <span class="keywordtype">double</span> maxCurveSegmentError;
<a name="l00205"></a>00205
<a name="l00207"></a>00207 <span class="comment">//</span>
<a name="l00214"></a>00214 <span class="comment"></span> <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveVertexList.html" title="A list of the vertices in a constructed offset curve.">OffsetCurveVertexList</a>* vertexList;
<a name="l00215"></a>00215
<a name="l00216"></a>00216 <span class="keywordtype">double</span> distance;
<a name="l00217"></a>00217
<a name="l00218"></a>00218 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1PrecisionModel.html" title="Specifies the precision model of the Coordinate in a Geometry.">geom::PrecisionModel</a>* precisionModel;
<a name="l00219"></a>00219
<a name="l00220"></a>00220 <span class="keyword">const</span> <a class="code" href="classgeos_1_1operation_1_1buffer_1_1BufferParameters.html" title="Contains the parameters which describe how a buffer should be constructed.">BufferParameters</a>& bufParams;
<a name="l00221"></a>00221
<a name="l00239"></a>00239 <span class="keywordtype">int</span> closingSegFactor; <span class="comment">// 1;</span>
<a name="l00240"></a>00240
<a name="l00241"></a>00241 <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> s0, s1, s2;
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a> seg0;
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a> seg1;
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a> offset0;
<a name="l00248"></a>00248
<a name="l00249"></a>00249 <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a> offset1;
<a name="l00250"></a>00250
<a name="l00251"></a>00251 <span class="keywordtype">int</span> side;
<a name="l00252"></a>00252
<a name="l00253"></a>00253 <span class="comment">// Not in JTS, used for single-sided buffers</span>
<a name="l00254"></a>00254 <span class="keywordtype">int</span> endCapIndex;
<a name="l00255"></a>00255
<a name="l00256"></a>00256 <span class="keywordtype">void</span> init(<span class="keywordtype">double</span> newDistance);
<a name="l00257"></a>00257
<a name="l00265"></a>00265 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> SIMPLIFY_FACTOR; <span class="comment">// 100.0;</span>
<a name="l00266"></a>00266
<a name="l00274"></a>00274 <span class="keywordtype">double</span> simplifyTolerance(<span class="keywordtype">double</span> bufDistance);
<a name="l00275"></a>00275
<a name="l00276"></a>00276 <span class="keywordtype">void</span> computeLineBufferCurve(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>& inputPts);
<a name="l00277"></a>00277
<a name="l00278"></a>00278 <span class="keywordtype">void</span> computeRingBufferCurve(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1CoordinateSequence.html" title="The internal representation of a list of coordinates inside a Geometry.">geom::CoordinateSequence</a>& inputPts,
<a name="l00279"></a>00279 <span class="keywordtype">int</span> side);
<a name="l00280"></a>00280
<a name="l00281"></a>00281 <span class="keywordtype">void</span> initSideSegments(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &nS1,
<a name="l00282"></a>00282 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &nS2, <span class="keywordtype">int</span> nSide);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="keywordtype">void</span> addNextSegment(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p, <span class="keywordtype">bool</span> addStartPoint);
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="keywordtype">void</span> addCollinear(<span class="keywordtype">bool</span> addStartPoint);
<a name="l00287"></a>00287
<a name="l00289"></a>00289 <span class="comment">//</span>
<a name="l00293"></a>00293 <span class="comment"></span> <span class="keywordtype">void</span> addOutsideTurn(<span class="keywordtype">int</span> orientation, <span class="keywordtype">bool</span> addStartPoint);
<a name="l00294"></a>00294
<a name="l00296"></a>00296 <span class="comment">//</span>
<a name="l00300"></a>00300 <span class="comment"></span> <span class="keywordtype">void</span> addInsideTurn(<span class="keywordtype">int</span> orientation, <span class="keywordtype">bool</span> addStartPoint);
<a name="l00301"></a>00301
<a name="l00303"></a>00303 <span class="keywordtype">void</span> addLastSegment();
<a name="l00304"></a>00304
<a name="l00317"></a>00317 <span class="keywordtype">void</span> computeOffsetSegment(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& seg,
<a name="l00318"></a>00318 <span class="keywordtype">int</span> side, <span class="keywordtype">double</span> distance,
<a name="l00319"></a>00319 <a class="code" href="classgeos_1_1geom_1_1LineSegment.html">geom::LineSegment</a>& offset);
<a name="l00320"></a>00320
<a name="l00324"></a>00324 <span class="keywordtype">void</span> addLineEndCap(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p0,
<a name="l00325"></a>00325 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p1);
<a name="l00326"></a>00326
<a name="l00338"></a>00338 <span class="keywordtype">void</span> addFillet(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p, <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p0,
<a name="l00339"></a>00339 <span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p1,
<a name="l00340"></a>00340 <span class="keywordtype">int</span> direction, <span class="keywordtype">double</span> radius);
<a name="l00341"></a>00341
<a name="l00351"></a>00351 <span class="keywordtype">void</span> addFillet(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p, <span class="keywordtype">double</span> startAngle,
<a name="l00352"></a>00352 <span class="keywordtype">double</span> endAngle, <span class="keywordtype">int</span> direction, <span class="keywordtype">double</span> radius);
<a name="l00353"></a>00353
<a name="l00355"></a>00355 <span class="keywordtype">void</span> addCircle(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p, <span class="keywordtype">double</span> distance);
<a name="l00356"></a>00356
<a name="l00358"></a>00358 <span class="keywordtype">void</span> addSquare(<span class="keyword">const</span> <a class="code" href="classgeos_1_1geom_1_1Coordinate.html" title="Coordinate is the lightweight class used to store coordinates.">geom::Coordinate</a> &p, <span class="keywordtype">double</span> distance);
<a name="l00359"></a>00359
<a name="l00360"></a>00360 std::vector<OffsetCurveVertexList*> vertexLists;
<a name="l00361"></a>00361
<a name="l00362"></a>00362 <span class="comment">// Declare type as noncopyable</span>
<a name="l00363"></a>00363 <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a>(<span class="keyword">const</span> <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a>& other);
<a name="l00364"></a>00364 <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a>& operator=(<span class="keyword">const</span> <a class="code" href="classgeos_1_1operation_1_1buffer_1_1OffsetCurveBuilder.html" title="Computes the raw offset curve for a single Geometry component (ring, line or point).">OffsetCurveBuilder</a>& rhs);
<a name="l00365"></a>00365 };
<a name="l00366"></a>00366
<a name="l00367"></a>00367 } <span class="comment">// namespace geos::operation::buffer</span>
<a name="l00368"></a>00368 } <span class="comment">// namespace geos::operation</span>
<a name="l00369"></a>00369 } <span class="comment">// namespace geos</span>
<a name="l00370"></a>00370
<a name="l00371"></a>00371 <span class="preprocessor">#endif // ndef GEOS_OP_BUFFER_OFFSETCURVEBUILDER_H</span>
<a name="l00372"></a>00372 <span class="preprocessor"></span>
<a name="l00373"></a>00373 <span class="comment">/**********************************************************************</span>
<a name="l00374"></a>00374 <span class="comment"> * $Log$</span>
<a name="l00375"></a>00375 <span class="comment"> * Revision 1.2 2006/03/27 17:04:17 strk</span>
<a name="l00376"></a>00376 <span class="comment"> * Cleanups and explicit initializations</span>
<a name="l00377"></a>00377 <span class="comment"> *</span>
<a name="l00378"></a>00378 <span class="comment"> * Revision 1.1 2006/03/14 00:19:40 strk</span>
<a name="l00379"></a>00379 <span class="comment"> * opBuffer.h split, streamlined headers in some (not all) files in operation/buffer/</span>
<a name="l00380"></a>00380 <span class="comment"> *</span>
<a name="l00381"></a>00381 <span class="comment"> **********************************************************************/</span>
<a name="l00382"></a>00382
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