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# ElevationMatrix.h

    00001 /**********************************************************************
    00002  * $Id: ElevationMatrix.h 2780 2009-12-03 19:46:43Z 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: original (by strk)
    00017  *
    00018  **********************************************************************/
    00019
    00020 #ifndef GEOS_OP_OVERLAY_ELEVATIONMATRIX_H
    00021 #define GEOS_OP_OVERLAY_ELEVATIONMATRIX_H
    00022
    00023 #include <geos/export.h>
    00024
    00025 #include <vector>
    00026 #include <string>
    00027
    00028 #include <geos/geom/CoordinateFilter.h> // for inheritance
    00029 #include <geos/geom/Envelope.h> // for composition
    00030 #include <geos/operation/overlay/ElevationMatrixCell.h> // for composition
    00031
    00032 // Forward declarations
    00033 namespace geos {
    00034         namespace geom {
    00035                 class Coordinate;
    00036                 class Geometry;
    00037         }
    00038         namespace operation {
    00039                 namespace overlay {
    00040                         class ElevationMatrixFilter;
    00041                         class ElevationMatrix;
    00042                 }
    00043         }
    00044 }
    00045
    00046 namespace geos {
    00047 namespace operation { // geos::operation
    00048 namespace overlay { // geos::operation::overlay
    00049
    00050
    00051 /*
    00052  * This is the CoordinateFilter used by ElevationMatrix.
    00053  * filter_ro is used to add Geometry Coordinate's Z
    00054  * values to the matrix.
    00055  * filter_rw is used to actually elevate Geometries.
    00056  */
    00057 class GEOS_DLL ElevationMatrixFilter: public geom::CoordinateFilter
    00058 {
    00059 public:
    00060         ElevationMatrixFilter(ElevationMatrix &em);
    00061         ~ElevationMatrixFilter();
    00062         void filter_rw(geom::Coordinate *c) const;
    00063         void filter_ro(const geom::Coordinate *c);
    00064 private:
    00065         ElevationMatrix &em;
    00066         double avgElevation;
    00067
    00068     // Declare type as noncopyable
    00069     ElevationMatrixFilter(const ElevationMatrixFilter& other);
    00070     ElevationMatrixFilter& operator=(const ElevationMatrixFilter& rhs);
    00071 };
    00072
    00073
    00074 /*
    00075  */
    00076 class GEOS_DLL ElevationMatrix {
    00077 friend class ElevationMatrixFilter;
    00078 public:
    00079         ElevationMatrix(const geom::Envelope &extent, unsigned int rows,
    00080                 unsigned int cols);
    00081         ~ElevationMatrix();
    00082         void add(const geom::Geometry *geom);
    00083         void elevate(geom::Geometry *geom) const;
    00084         // set Z value for each cell w/out one
    00085         double getAvgElevation() const;
    00086         ElevationMatrixCell &getCell(const geom::Coordinate &c);
    00087         const ElevationMatrixCell &getCell(const geom::Coordinate &c) const;
    00088         std::string print() const;
    00089 private:
    00090         ElevationMatrixFilter filter;
    00091         void add(const geom::Coordinate &c);
    00092         geom::Envelope env;
    00093         unsigned int cols;
    00094         unsigned int rows;
    00095         double cellwidth;
    00096         double cellheight;
    00097         mutable bool avgElevationComputed;
    00098         mutable double avgElevation;
    00099         std::vector<ElevationMatrixCell>cells;
    00100 };
    00101
    00102
    00103 } // namespace geos::operation::overlay
    00104 } // namespace geos::operation
    00105 } // namespace geos
    00106
    00107 #endif // ndef GEOS_OP_OVERLAY_ELEVATIONMATRIX_H
    00108
    00109 /**********************************************************************
    00110  * $Log$
    00111  * Revision 1.1  2006/03/17 13:24:59  strk
    00112  * 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).
    00113  *
    00114  **********************************************************************/
    00115