GEOS 3.3.1
|
00001 /********************************************************************** 00002 * $Id: PointBuilder.h 2757 2009-12-01 15:39:41Z 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/PointBuilder.java rev. 1.16 (JTS-1.10) 00017 * 00018 **********************************************************************/ 00019 00020 #ifndef GEOS_OP_OVERLAY_POINTBUILDER_H 00021 #define GEOS_OP_OVERLAY_POINTBUILDER_H 00022 00023 #include <geos/export.h> 00024 00025 #include <geos/geom/GeometryFactory.h> // for inlines 00026 #include <geos/operation/overlay/OverlayOp.h> // for OpCode enum 00027 #include <geos/util.h> 00028 00029 #include <vector> 00030 00031 // Forward declarations 00032 namespace geos { 00033 namespace geom { 00034 class GeometryFactory; 00035 class Point; 00036 } 00037 namespace geomgraph { 00038 class Node; 00039 } 00040 namespace algorithm { 00041 class PointLocator; 00042 } 00043 namespace operation { 00044 namespace overlay { 00045 class OverlayOp; 00046 } 00047 } 00048 } 00049 00050 namespace geos { 00051 namespace operation { // geos::operation 00052 namespace overlay { // geos::operation::overlay 00053 00057 class GEOS_DLL PointBuilder { 00058 private: 00059 00060 OverlayOp *op; 00061 const geom::GeometryFactory *geometryFactory; 00062 void extractNonCoveredResultNodes(OverlayOp::OpCode opCode); 00063 00064 /* 00065 * Converts non-covered nodes to Point objects and adds them to 00066 * the result. 00067 * 00068 * A node is covered if it is contained in another element Geometry 00069 * with higher dimension (e.g. a node point might be contained in 00070 * a polygon, in which case the point can be eliminated from 00071 * the result). 00072 * 00073 * @param n the node to test 00074 */ 00075 void filterCoveredNodeToPoint(const geomgraph::Node *); 00076 00080 std::vector<geom::Point*> *resultPointList; 00081 00082 public: 00083 00084 PointBuilder(OverlayOp *newOp, 00085 const geom::GeometryFactory *newGeometryFactory, 00086 algorithm::PointLocator *newPtLocator=NULL) 00087 : 00088 op(newOp), 00089 geometryFactory(newGeometryFactory), 00090 resultPointList(new std::vector<geom::Point *>()) 00091 { 00092 ::geos::ignore_unused_variable_warning(newPtLocator); 00093 } 00094 00099 std::vector<geom::Point*>* build(OverlayOp::OpCode opCode); 00100 }; 00101 00102 00103 } // namespace geos::operation::overlay 00104 } // namespace geos::operation 00105 } // namespace geos 00106 00107 #endif // ndef GEOS_OP_OVERLAY_POINTBUILDER_H 00108 00109 /********************************************************************** 00110 * $Log$ 00111 * Revision 1.2 2006/06/05 15:36:34 strk 00112 * Given OverlayOp funx code enum a name and renamed values to have a lowercase prefix. Drop all of noding headers from installed header set. 00113 * 00114 * Revision 1.1 2006/03/17 13:24:59 strk 00115 * 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). 00116 * 00117 **********************************************************************/ 00118