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qgsrastercalcnode.h
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1 /***************************************************************************
2  qgsrastercalcnode.h
3  Node for raster calculator tree
4  --------------------
5  begin : 2010-10-23
6  copyright : (C) 20010 by Marco Hugentobler
7  email : marco dot hugentobler at sourcepole dot ch
8 ***************************************************************************/
9 
10 /***************************************************************************
11  * *
12  * This program is free software; you can redistribute it and/or modify *
13  * it under the terms of the GNU General Public License as published by *
14  * the Free Software Foundation; either version 2 of the License, or *
15  * (at your option) any later version. *
16  * *
17  ***************************************************************************/
18 
19 #ifndef QGSRASTERCALCNODE_H
20 #define QGSRASTERCALCNODE_H
21 
22 #include "qgsrastermatrix.h"
23 #include <QMap>
24 #include <QString>
25 
26 class ANALYSIS_EXPORT QgsRasterCalcNode
27 {
28  public:
30  enum Type
31  {
32  tOperator = 1,
33  tNumber,
34  tRasterRef
35  };
36 
38  enum Operator
39  {
40  opPLUS,
41  opMINUS,
42  opMUL,
43  opDIV,
44  opPOW,
45  opSQRT,
46  opSIN,
47  opCOS,
48  opTAN,
49  opASIN,
50  opACOS,
51  opATAN,
52  opEQ, // =
53  opNE,
54  opGT, // >
55  opLT, // <
56  opGE, // >=
57  opLE, // <=
58  opAND,
59  opOR,
60  opSIGN //change sign
61  };
62 
63  QgsRasterCalcNode();
64  QgsRasterCalcNode( double number );
65  QgsRasterCalcNode( Operator op, QgsRasterCalcNode* left, QgsRasterCalcNode* right );
66  QgsRasterCalcNode( const QString& rasterName );
67  ~QgsRasterCalcNode();
68 
69  Type type() const { return mType; }
70 
71  //set left node
72  void setLeft( QgsRasterCalcNode* left ) { delete mLeft; mLeft = left; }
73  void setRight( QgsRasterCalcNode* right ) { delete mRight; mRight = right; }
74 
76  bool calculate( QMap<QString, QgsRasterMatrix*>& rasterData, QgsRasterMatrix& result ) const;
77 
78  static QgsRasterCalcNode* parseRasterCalcString( const QString& str, QString& parserErrorMsg );
79 
80  private:
81  Type mType;
82  QgsRasterCalcNode* mLeft;
83  QgsRasterCalcNode* mRight;
84  double mNumber;
85  QString mRasterName;
86  Operator mOperator;
87 };
88 
89 
90 #endif // QGSRASTERCALCNODE_H
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