QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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qgsalignraster.h
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1/***************************************************************************
2 qgsalignraster.h
3 --------------------------------------
4 Date : June 2015
5 Copyright : (C) 2015 by Martin Dobias
6 Email : wonder dot sk at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGSALIGNRASTER_H
17#define QGSALIGNRASTER_H
18
19#include <QList>
20#include <QPointF>
21#include <QSizeF>
22#include <QString>
23#include <gdal_version.h>
24#include "qgis_analysis.h"
25#include "qgis_sip.h"
26#include "qgsogrutils.h"
27#include "qgsalignrasterdata.h"
28
29class QgsRectangle;
30
31typedef void *GDALDatasetH SIP_SKIP;
32
33
44class ANALYSIS_EXPORT QgsAlignRaster
45{
46#ifdef SIP_RUN
47#include <gdal_version.h>
48#endif
49
50 public:
52
54 struct ANALYSIS_EXPORT RasterInfo
55 {
56 public:
58 RasterInfo( const QString &layerpath );
59
60 RasterInfo( const RasterInfo &rh ) = delete;
61 RasterInfo &operator=( const RasterInfo &rh ) = delete;
62
64 bool isValid() const { return nullptr != mDataset; }
65
67 QString crs() const { return mCrsWkt; }
69 QSize rasterSize() const { return QSize( mXSize, mYSize ); }
71 int bandCount() const { return mBandCnt; }
73 QSizeF cellSize() const;
75 QPointF gridOffset() const;
77 QgsRectangle extent() const;
79 QPointF origin() const;
80
82 void dump() const;
83
85 double identify( double mx, double my );
86
87 protected:
91 QString mCrsWkt;
93 double mGeoTransform[6];
95 int mXSize = 0;
97 int mYSize = 0;
99 int mBandCnt = 0;
100
101 private:
102#ifdef SIP_RUN
104#endif
105
106 friend class QgsAlignRaster;
107 };
108
111 typedef QList<QgsAlignRasterData::RasterItem> List;
112
115 {
116
122 virtual bool progress( double complete ) = 0;
123
124 virtual ~ProgressHandler() = default;
125 };
126
128 void setProgressHandler( ProgressHandler *progressHandler ) { mProgressHandler = progressHandler; }
130 ProgressHandler *progressHandler() const { return mProgressHandler; }
131
133 void setRasters( const List &list ) { mRasters = list; }
135 List rasters() const { return mRasters; }
136
137 void setGridOffset( QPointF offset ) { mGridOffsetX = offset.x(); mGridOffsetY = offset.y(); }
138 QPointF gridOffset() const { return QPointF( mGridOffsetX, mGridOffsetY ); }
139
141 void setCellSize( double x, double y ) { setCellSize( QSizeF( x, y ) ); }
143 void setCellSize( QSizeF size ) { mCellSizeX = size.width(); mCellSizeY = size.height(); }
145 QSizeF cellSize() const { return QSizeF( mCellSizeX, mCellSizeY ); }
146
148 void setDestinationCrs( const QString &crsWkt ) { mCrsWkt = crsWkt; }
150 QString destinationCrs() const { return mCrsWkt; }
151
156 void setClipExtent( double xmin, double ymin, double xmax, double ymax );
157
162 void setClipExtent( const QgsRectangle &extent );
163
168 QgsRectangle clipExtent() const;
169
181 bool setParametersFromRaster( const RasterInfo &rasterInfo, const QString &customCRSWkt = QString(), QSizeF customCellSize = QSizeF(), QPointF customGridOffset = QPointF( -1, -1 ) );
182
187 bool setParametersFromRaster( const QString &filename, const QString &customCRSWkt = QString(), QSizeF customCellSize = QSizeF(), QPointF customGridOffset = QPointF( -1, -1 ) );
188
193 bool checkInputParameters();
194
199 QSize alignedRasterSize() const;
200
205 QgsRectangle alignedRasterExtent() const;
206
211 bool run();
212
217 QString errorMessage() const { return mErrorMessage; }
218
220 void dump() const;
221
223 int suggestedReferenceLayer() const;
224
225 protected:
226
228 bool createAndWarp( const Item &raster );
229
231 static bool suggestedWarpOutput( const RasterInfo &info, const QString &destWkt, QSizeF *cellSize = nullptr, QPointF *gridOffset = nullptr, QgsRectangle *rect = nullptr );
232
233 protected:
234
235 // set by the client
236
238 ProgressHandler *mProgressHandler = nullptr;
239
242
245
247 QString mCrsWkt;
249 double mCellSizeX, mCellSizeY;
251 double mGridOffsetX, mGridOffsetY;
252
257 double mClipExtent[4];
258
259 // derived data from other members
260
262 double mGeoTransform[6];
265
268};
269
270#endif // QGSALIGNRASTER_H
GdalResampleAlgorithm
Resampling algorithm to be used (equivalent to GDAL's enum GDALResampleAlg)
Definition qgis.h:5312
QgsAlignRaster takes one or more raster layers and warps (resamples) them so they have the same:
ProgressHandler * progressHandler() const
Gets associated progress handler. May be nullptr (default)
int mYSize
Computed raster grid height.
QSizeF cellSize() const
Gets output cell size.
QPointF gridOffset() const
double mGridOffsetX
Destination grid offset - expected to be in interval <0,cellsize)
void setCellSize(QSizeF size)
Sets output cell size.
List mRasters
List of rasters to be aligned (with their output files and other options)
void setDestinationCrs(const QString &crsWkt)
Sets the output CRS in WKT format.
void setGridOffset(QPointF offset)
List rasters() const
Gets list of rasters that will be aligned.
QString mCrsWkt
Destination CRS - stored in well-known text (WKT) format.
int mXSize
Computed raster grid width.
QString destinationCrs() const
Gets the output CRS in WKT format.
double mCellSizeX
Destination cell size.
void setProgressHandler(ProgressHandler *progressHandler)
Assign a progress handler instance. Does not take ownership. nullptr can be passed.
QList< QgsAlignRasterData::RasterItem > List
QString errorMessage() const
Returns the error from a previous run() call.
QgsAlignRasterData::RasterItem Item
void setRasters(const List &list)
Sets list of rasters that will be aligned.
void setCellSize(double x, double y)
Sets output cell size.
QString mErrorMessage
Last error message from run()
Qgis::GdalResampleAlgorithm ResampleAlg
A rectangle specified with double values.
std::unique_ptr< std::remove_pointer< GDALDatasetH >::type, GDALDatasetCloser > dataset_unique_ptr
Scoped GDAL dataset.
#define SIP_SKIP
Definition qgis_sip.h:126
void * GDALDatasetH
Definition of one raster layer for alignment.
Helper struct to be sub-classed for progress reporting.
virtual ~ProgressHandler()=default
virtual bool progress(double complete)=0
Method to be overridden for progress reporting.
Utility class for gathering information about rasters.
QString crs() const
Returns the CRS in WKT format.
gdal::dataset_unique_ptr mDataset
handle to open GDAL dataset
int bandCount() const
Returns the number of raster bands in the file.
QSize rasterSize() const
Returns the size of the raster grid in pixels.
RasterInfo(const RasterInfo &rh)=delete
RasterInfo & operator=(const RasterInfo &rh)=delete
bool isValid() const
Check whether the given path is a valid raster.
QString mCrsWkt
CRS stored in WKT format.