QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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qgsterraingenerator.h
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1/***************************************************************************
2 qgsterraingenerator.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 QGSTERRAINGENERATOR_H
17#define QGSTERRAINGENERATOR_H
18
19#include "qgis_3d.h"
20
21#include "qgstilingscheme.h"
22#include "qgschunkloader.h"
23
24class QgsAABB;
27class QgsRectangle;
28class QgsTerrainEntity;
29
30class QDomElement;
31class QDomDocument;
32class QgsProject;
33
34#define SIP_NO_FILE
35
36
49class _3D_EXPORT QgsTerrainGenerator : public QgsQuadtreeChunkLoaderFactory
50{
51 Q_OBJECT
52 public:
53
63
65 virtual void setTerrain( QgsTerrainEntity *t ) { mTerrain = t; }
66
69
71 virtual Type type() const = 0;
72
74 virtual QgsRectangle extent() const { return mExtent; }
75
77 virtual void setExtent( const QgsRectangle &extent ) { Q_UNUSED( extent ) }
78
80 virtual QgsRectangle rootChunkExtent() const = 0;
81
83 virtual QgsAABB rootChunkBbox( const Qgs3DMapSettings &map ) const;
84
86 virtual float rootChunkError( const Qgs3DMapSettings &map ) const;
87
89 virtual void rootChunkHeightRange( float &hMin, float &hMax ) const;
90
92 virtual float heightAt( double x, double y, const Qgs3DRenderContext &context ) const;
93
95 virtual void writeXml( QDomElement &elem ) const = 0;
96
98 virtual void readXml( const QDomElement &elem ) = 0;
99
101 virtual void resolveReferences( const QgsProject &project ) { Q_UNUSED( project ) }
102
104 static QString typeToString( Type type );
105
107 const QgsTilingScheme &tilingScheme() const { return mTerrainTilingScheme; }
108
110 virtual QgsCoordinateReferenceSystem crs() const { return mTerrainTilingScheme.crs(); }
111
113 bool isValid() const;
114
115 signals:
116
119
120 protected:
121
123 QgsTerrainEntity *mTerrain = nullptr;
125
126 bool mIsValid = true;
127
128};
129
130
131#endif // QGSTERRAINGENERATOR_H
This class represents a coordinate reference system (CRS).
Encapsulates a QGIS project, including sets of map layers and their styles, layouts,...
Definition qgsproject.h:107
A rectangle specified with double values.
virtual void writeXml(QDomElement &elem) const =0
Write terrain generator's configuration to XML.
Type
Enumeration of the available terrain generators.
@ QuantizedMesh
Terrain is built from quantized mesh tiles.
@ Dem
Terrain is built from raster layer with digital elevation model.
@ Online
Terrain is built from downloaded tiles with digital elevation model.
@ Mesh
Terrain is built from mesh layer with z value on vertices.
@ Flat
The whole terrain is flat area.
QgsTilingScheme mTerrainTilingScheme
Tiling scheme of the terrain.
void terrainChanged()
Emitted when the terrain changed (for example, raster DEM or mesh have data changed)
virtual Type type() const =0
What texture generator implementation is this.
virtual void setExtent(const QgsRectangle &extent)
sets the extent of the terrain in terrain's CRS
virtual QgsRectangle extent() const
extent of the terrain in terrain's CRS, might be non-square and smaller than rootChunkExtent()
virtual QgsRectangle rootChunkExtent() const =0
extent of the terrain's root chunk in terrain's CRS
virtual void readXml(const QDomElement &elem)=0
Read terrain generator's configuration from XML.
virtual void resolveReferences(const QgsProject &project)
After read of XML, resolve references to any layers that have been read as layer IDs.
virtual void setTerrain(QgsTerrainEntity *t)
Sets terrain entity for the generator (does not transfer ownership)
virtual QgsCoordinateReferenceSystem crs() const
Returns CRS of the terrain.
const QgsTilingScheme & tilingScheme() const
Returns tiling scheme of the terrain.
virtual QgsTerrainGenerator * clone() const =0SIP_FACTORY
Makes a copy of the current instance.
#define SIP_FACTORY
Definition qgis_sip.h:76