QGIS API Documentation 3.29.0-Master (19d7edcfed)
qgsmeshlayerinterpolator.h
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1/***************************************************************************
2 qgsmeshlayerinterpolator.h
3 --------------------------
4 begin : April 2018
5 copyright : (C) 2018 by Peter Petrik
6 email : zilolv at gmail dot com
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSMESHLAYERINTERPOLATOR_H
19#define QGSMESHLAYERINTERPOLATOR_H
20
21class QgsMeshLayer;
22class QgsSymbol;
26
27#include "qgis.h"
28#include "qgis_sip.h"
29
30#include <QSize>
31#include "qgsmaplayerrenderer.h"
32#include "qgstriangularmesh.h"
33#include "qgsrasterinterface.h"
35#include "qgsrastershader.h"
36
38
39#ifdef SIP_RUN
40% ModuleHeaderCode
42% End
43#endif
44
46
54class QgsMeshLayerInterpolator : public QgsRasterInterface SIP_SKIP
55{
56 public:
58 QgsMeshLayerInterpolator( const QgsTriangularMesh &m,
59 const QVector<double> &datasetValues,
60 const QgsMeshDataBlock &activeFaceFlagValues,
62 const QgsRenderContext &context,
63 const QSize &size );
64 ~QgsMeshLayerInterpolator() override;
65
66 QgsRasterInterface *clone() const override;
67 Qgis::DataType dataType( int ) const override;
68 int bandCount() const override;
69 QgsRasterBlock *block( int, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback = nullptr ) override;
70
71 void setSpatialIndexActive( bool active );
72
73 private:
74 const QgsTriangularMesh &mTriangularMesh;
75 const QVector<double> &mDatasetValues;
76 const QgsMeshDataBlock &mActiveFaceFlagValues;
77 const QgsRenderContext &mContext;
78 QgsMeshDatasetGroupMetadata::DataType mDataType = QgsMeshDatasetGroupMetadata::DataType::DataOnVertices;
79 QSize mOutputSize;
80 bool mSpatialIndexActive = false;
81};
82
84
85namespace QgsMeshUtils
86{
87
106 const QgsMeshLayer &layer,
107 const QgsMeshDatasetIndex &datasetIndex,
108 const QgsCoordinateReferenceSystem &destinationCrs,
109 const QgsCoordinateTransformContext &transformContext,
110 double mapUnitsPerPixel,
111 const QgsRectangle &extent,
112 QgsRasterBlockFeedback *feedback = nullptr
113 ) SIP_FACTORY;
114
115
132 const QgsTriangularMesh &triangularMesh,
133 const QgsMeshDataBlock &datasetValues,
134 const QgsMeshDataBlock &activeFlags,
136 const QgsCoordinateTransform &transform,
137 double mapUnitsPerPixel,
138 const QgsRectangle &extent,
139 QgsRasterBlockFeedback *feedback = nullptr
140 ) SIP_SKIP;
141};
142
143#endif // QGSMESHLAYERINTERPOLATOR_H
DataType
Raster data types.
Definition: qgis.h:129
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
Class for doing transforms between two map coordinate systems.
QgsMeshDataBlock is a block of integers/doubles that can be used to retrieve: active flags (e....
DataType
Location of where data is specified for datasets in the dataset group.
QgsMeshDatasetIndex is index that identifies the dataset group (e.g.
Represents a mesh layer supporting display of data on structured or unstructured meshes.
Definition: qgsmeshlayer.h:100
Feedback object tailored for raster block reading.
Raster data container.
Base class for processing filters like renderers, reprojector, resampler etc.
virtual QgsRasterInterface * clone() const =0
Clone itself, create deep copy.
virtual QgsRasterBlock * block(int bandNo, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback=nullptr)=0
Read block of data using given extent and size.
virtual Qgis::DataType dataType(int bandNo) const =0
Returns data type for the band specified by number.
virtual int bandCount() const =0
Gets number of bands.
A rectangle specified with double values.
Definition: qgsrectangle.h:42
Contains information about the context of a rendering operation.
Abstract base class for all rendered symbols.
Definition: qgssymbol.h:93
Triangular/Derived Mesh is mesh with vertices in map coordinates.
CORE_EXPORT QgsRasterBlock * exportRasterBlock(const QgsMeshLayer &layer, const QgsMeshDatasetIndex &datasetIndex, const QgsCoordinateReferenceSystem &destinationCrs, const QgsCoordinateTransformContext &transformContext, double mapUnitsPerPixel, const QgsRectangle &extent, QgsRasterBlockFeedback *feedback=nullptr)
Exports mesh layer's dataset values as raster block.
#define SIP_SKIP
Definition: qgis_sip.h:126
#define SIP_FACTORY
Definition: qgis_sip.h:76