QGIS API Documentation  2.99.0-Master (6a61179)
qgscliptominmaxenhancement.cpp
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1 /* **************************************************************************
2  qgscliptominmaxenhancement.cpp - description
3  -------------------
4 begin : Fri Nov 16 2007
5 copyright : (C) 2007 by Peter J. Ersts
6 email : [email protected]
7 
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 
20 #include "qgscontrastenhancement.h"
21 
22 QgsClipToMinMaxEnhancement::QgsClipToMinMaxEnhancement( Qgis::DataType theQgsRasterDataType, double theMinimumValue, double theMaximumValue ) : QgsContrastEnhancementFunction( theQgsRasterDataType, theMinimumValue, theMaximumValue )
23 {
24 }
25 
27 {
28  if ( theValue < mMinimumValue || theValue > mMaximumValue )
29  {
30  return -1;
31  }
32 
34  {
35  return static_cast<int>( theValue );
36  }
37  else
38  {
40  }
41 }
42 
44 {
45  if ( theValue < mMinimumValue || theValue > mMaximumValue )
46  {
47  return false;
48  }
49 
50  return true;
51 }
int enhance(double) override
A customizable method that takes in a double and returns a int between 0 and 255. ...
static double minimumValuePossible(Qgis::DataType)
Helper function that returns the minimum possible value for a GDAL data type.
DataType
Raster data types.
Definition: qgis.h:60
Qgis::DataType mQgsRasterDataType
Data type of the band.
A contrast enhancement funcion is the base class for all raster contrast enhancements.
double mMaximumValue
User defineable maximum value for the band, used for enhanceContrasting.
static double maximumValuePossible(Qgis::DataType)
Helper function that returns the maximum possible value for a GDAL data type.
QgsClipToMinMaxEnhancement(Qgis::DataType, double, double)
Eight bit unsigned integer (quint8)
Definition: qgis.h:63
bool isValueInDisplayableRange(double) override
A customicable method to indicate if the pixels is displayable.