GeoTessCPP: include/PolygonFactory.h Source File

GeoTessCPP 2.0.0 Software to facilitate storage and retrieval of 3D information about the Earth.

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PolygonFactory.h
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35
36 #ifndef POLYGONFACTORY_H_
37 #define POLYGONFACTORY_H_
38
39 // **** _SYSTEM INCLUDES_ ******************************************************
40
41 #include <cstdio>
42 #include <iostream>
43 #include <iomanip>
44 #include <vector>
45
46 // use standard library objects
47 using namespace std;
48
49 // **** _LOCAL INCLUDES_ *******************************************************
50
51 #include "CPPUtils.h"
52 #include "GeoTessUtils.h"
53 #include "GreatCircle.h"
54 #include "IFStreamAscii.h"
55
56 // **** _BEGIN GEOTESS NAMESPACE_ **********************************************
57
58 namespace geotess {
59
60 // **** _FORWARD REFERENCES_ ***************************************************
61
62 // **** _CLASS DEFINITION_ *****************************************************
63
72 class GEOTESS_EXP_IMP PolygonFactory
73 {
74 public:
75
76 static Polygon* getPolygon(string inputFileName)
77 {
78 if (inputFileName.find(".kmz", inputFileName.length() - 4) != string::npos
79 || inputFileName.find(".kml", inputFileName.length() - 4) != string::npos)
80 {
81 ostringstream os;
82 os << endl << "ERROR in Polygon::constructor" << endl
83 << "Cannot read files in kml or kmz format (Google Earth)." << endl
84 << "GeoTessExplorer has a utility to translate to ascii." << endl;
85 throw GeoTessException(os, __FILE__, __LINE__, 10201);
86 }
87
88 Polygon* polygon = NULL;
89
90 IFStreamAscii input;
91 input.openForRead(inputFileName);
92 string line;
93 input.readLine(line);
94 line = CPPUtils::uppercase_string(line);
95 if (line.find("POLYGON3D") == 0)
96 {
97 polygon = new Polygon3D();
98 polygon->loadAscii(input);
99 }
100 else if (line.find("POLYGON") == 0)
101 {
102 polygon = new Polygon();
103 polygon->loadAscii(input);
104 }
105 else
106 {
107 ostringstream os;
108 os << endl << "ERROR in PolygonFactory::getPolygon()" << endl
109 << "Expecting file to to start with string 'POLYGON3D' or 'POLYGON' but first line is" << endl
110 << line << endl;
111 throw GeoTessException(os, __FILE__, __LINE__, 10202);
112 }
113
114 input.close();
115
116 return polygon;
117 }
118
119
120 }; // end class PolygonFactory
121
122 } // end namespace geotess
123
124 #endif /* POLYGONFACTORY_H_ */