LineBuilder.h

00001 /**********************************************************************
00002  * $Id: LineBuilder.h 3255 2011-03-01 17:56:10Z mloskot $
00003  *
00004  * GEOS - Geometry Engine Open Source
00005  * http://geos.refractions.net
00006  *
00007  * Copyright (C) 2006 Refractions Research Inc.
00008  *
00009  * This is free software; you can redistribute and/or modify it under
00010  * the terms of the GNU Lesser General Public Licence as published
00011  * by the Free Software Foundation. 
00012  * See the COPYING file for more information.
00013  *
00014  ***********************************************************************
00015  *
00016  * Last port: operation/overlay/LineBuilder.java rev. 1.15 (JTS-1.10)
00017  *
00018  **********************************************************************/
00019 
00020 #ifndef GEOS_OP_OVERLAY_LINEBUILDER_H
00021 #define GEOS_OP_OVERLAY_LINEBUILDER_H
00022 
00023 #include <geos/export.h>
00024 
00025 #include <geos/operation/overlay/OverlayOp.h> // for OverlayOp::OpCode enum 
00026 
00027 #include <vector>
00028 
00029 #ifdef _MSC_VER
00030 #pragma warning(push)
00031 #pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
00032 #endif
00033 
00034 // Forward declarations
00035 namespace geos {
00036         namespace geom {
00037                 class GeometryFactory;
00038                 class CoordinateSequence;
00039                 class LineString;
00040         }
00041         namespace geomgraph {
00042                 class DirectedEdge;
00043                 class Edge;
00044         }
00045         namespace algorithm {
00046                 class PointLocator;
00047         }
00048         namespace operation {
00049                 namespace overlay {
00050                         class OverlayOp;
00051                 }
00052         }
00053 }
00054 
00055 namespace geos {
00056 namespace operation { // geos::operation
00057 namespace overlay { // geos::operation::overlay
00058 
00064 class GEOS_DLL LineBuilder {
00065 
00066 public:
00067 
00068         LineBuilder(OverlayOp *newOp,
00069                         const geom::GeometryFactory *newGeometryFactory,
00070                         algorithm::PointLocator *newPtLocator);
00071 
00072         ~LineBuilder();
00073 
00077         std::vector<geom::LineString*>* build(OverlayOp::OpCode opCode);
00078 
00090         void collectLineEdge(geomgraph::DirectedEdge *de,
00091                         OverlayOp::OpCode opCode,
00092                         std::vector<geomgraph::Edge*>* edges);
00093 
00094 private:
00095         OverlayOp *op;
00096         const geom::GeometryFactory *geometryFactory;
00097         algorithm::PointLocator *ptLocator;
00098         std::vector<geomgraph::Edge*> lineEdgesList;
00099         std::vector<geom::LineString*>* resultLineList;
00100         void findCoveredLineEdges();
00101         void collectLines(OverlayOp::OpCode opCode);
00102         void buildLines(OverlayOp::OpCode opCode);
00103         void labelIsolatedLines(std::vector<geomgraph::Edge*> *edgesList);
00104 
00115         void collectBoundaryTouchEdge(geomgraph::DirectedEdge *de,
00116                         OverlayOp::OpCode opCode,
00117                         std::vector<geomgraph::Edge*>* edges);
00118 
00122         void labelIsolatedLine(geomgraph::Edge *e, int targetIndex);
00123 
00124         /*
00125          * If the given CoordinateSequence has mixed 3d/2d vertexes
00126          * set Z for all vertexes missing it.
00127          * The Z value is interpolated between 3d vertexes and copied
00128          * from a 3d vertex to the end.
00129          */
00130         void propagateZ(geom::CoordinateSequence *cs);
00131 };
00132 
00133 } // namespace geos::operation::overlay
00134 } // namespace geos::operation
00135 } // namespace geos
00136 
00137 #ifdef _MSC_VER
00138 #pragma warning(pop)
00139 #endif
00140 
00141 #endif // ndef GEOS_OP_OVERLAY_LINEBUILDER_H
00142 
00143 /**********************************************************************
00144  * $Log$
00145  * Revision 1.2  2006/06/05 15:36:34  strk
00146  * Given OverlayOp funx code enum a name and renamed values to have a lowercase prefix. Drop all of noding headers from installed header set.
00147  *
00148  * Revision 1.1  2006/03/17 13:24:59  strk
00149  * opOverlay.h header splitted. Reduced header inclusions in operation/overlay implementation files. ElevationMatrixFilter code moved from own file to ElevationMatrix.cpp (ideally a class-private).
00150  *
00151  **********************************************************************/
00152 

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