QGIS API Documentation  3.23.0-Master (eb871beae0)
qgsdemterraingenerator.h
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1 /***************************************************************************
2  qgsdemterraingenerator.h
3  --------------------------------------
4  Date : July 2017
5  Copyright : (C) 2017 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 QGSDEMTERRAINGENERATOR_H
17 #define QGSDEMTERRAINGENERATOR_H
18 
19 #include "qgis_3d.h"
20 
21 #include "qgsterraingenerator.h"
22 
23 
24 #include <memory>
25 
26 class QgsRasterLayer;
27 class QgsDemHeightMapGenerator;
28 
29 #include "qgsmaplayerref.h"
30 
31 #define SIP_NO_FILE
32 
42 {
43  public:
46  ~QgsDemTerrainGenerator() override;
47 
49  void setLayer( QgsRasterLayer *layer );
51  QgsRasterLayer *layer() const;
52 
54  void setCrs( const QgsCoordinateReferenceSystem &crs, const QgsCoordinateTransformContext &context );
55 
57  void setResolution( int resolution ) { mResolution = resolution; updateGenerator(); }
59  int resolution() const { return mResolution; }
60 
62  void setSkirtHeight( float skirtHeight ) { mSkirtHeight = skirtHeight; }
64  float skirtHeight() const { return mSkirtHeight; }
65 
67  QgsDemHeightMapGenerator *heightMapGenerator() { return mHeightMapGenerator; }
68 
69  QgsTerrainGenerator *clone() const override SIP_FACTORY;
70  Type type() const override;
71  QgsRectangle extent() const override;
72  float heightAt( double x, double y, const Qgs3DMapSettings &map ) const override;
73  void writeXml( QDomElement &elem ) const override;
74  void readXml( const QDomElement &elem ) override;
75  void resolveReferences( const QgsProject &project ) override;
76 
77  QgsChunkLoader *createChunkLoader( QgsChunkNode *node ) const override SIP_FACTORY;
78 
79  private:
80  void updateGenerator();
81 
82  QgsDemHeightMapGenerator *mHeightMapGenerator = nullptr;
83 
85 
86  QgsCoordinateTransformContext mTransformContext;
87 
89  QgsMapLayerRef mLayer;
91  int mResolution = 16;
93  float mSkirtHeight = 10.f;
94 };
95 
96 
97 #endif // QGSDEMTERRAINGENERATOR_H
This class represents a coordinate reference system (CRS).
Contains information about the context in which a coordinate transform is executed.
QgsDemHeightMapGenerator * heightMapGenerator()
Returns height map generator object - takes care of extraction of elevations from the layer)
int resolution() const
Returns resolution of the generator (how many elevation samples on one side of a terrain tile)
void setSkirtHeight(float skirtHeight)
Sets skirt height (in world units). Skirts at the edges of terrain tiles help hide cracks between adj...
void setResolution(int resolution)
Sets resolution of the generator (how many elevation samples on one side of a terrain tile)
QgsDemTerrainGenerator()=default
Constructor for QgsDemTerrainGenerator.
float skirtHeight() const
Returns skirt height (in world units). Skirts at the edges of terrain tiles help hide cracks between ...
Encapsulates a QGIS project, including sets of map layers and their styles, layouts,...
Definition: qgsproject.h:101
Represents a raster layer.
A rectangle specified with double values.
Definition: qgsrectangle.h:42
virtual QgsTerrainGenerator * clone() const =0SIP_FACTORY
Makes a copy of the current instance.
#define SIP_FACTORY
Definition: qgis_sip.h:76
const QgsCoordinateReferenceSystem & crs