QGIS API Documentation
3.0.2-Girona (307d082)
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3 Base class for generators of terrain. More...
#include <qgsterraingenerator.h>
Public Types | |
enum | Type { Flat, Dem, QuantizedMesh } |
Enumeration of the available terrain generators. More... | |
Public Member Functions | |
virtual QgsTerrainGenerator * | clone () const =0SIP_FACTORY |
Makes a copy of the current instance. More... | |
QgsCoordinateReferenceSystem | crs () const |
Returns CRS of the terrain. More... | |
virtual QgsRectangle | extent () const =0 |
extent of the terrain in terrain's CRS More... | |
virtual float | heightAt (double x, double y, const Qgs3DMapSettings &map) const |
Returns height at (x,y) in terrain's CRS. More... | |
virtual void | readXml (const QDomElement &elem)=0 |
Read terrain generator's configuration from XML. More... | |
virtual void | resolveReferences (const QgsProject &project) |
After read of XML, resolve references to any layers that have been read as layer IDs. More... | |
virtual QgsAABB | rootChunkBbox (const Qgs3DMapSettings &map) const |
Returns bounding box of the root chunk. More... | |
virtual float | rootChunkError (const Qgs3DMapSettings &map) const |
Returns error of the root chunk in world coordinates. More... | |
virtual void | rootChunkHeightRange (float &hMin, float &hMax) const |
Returns height range of the root chunk in world coordinates. More... | |
void | setTerrain (QgsTerrainEntity *t) |
Sets terrain entity for the generator (does not transfer ownership) More... | |
const QgsTilingScheme & | tilingScheme () const |
Returns tiling scheme of the terrain. More... | |
virtual Type | type () const =0 |
What texture generator implementation is this. More... | |
virtual void | writeXml (QDomElement &elem) const =0 |
Write terrain generator's configuration to XML. More... | |
Static Public Member Functions | |
static QString | typeToString (Type type) |
Converts terrain generator type enumeration into a string. More... | |
Protected Attributes | |
QgsTerrainEntity * | mTerrain = nullptr |
QgsTilingScheme | mTerrainTilingScheme |
Tiling scheme of the terrain. More... | |
3 Base class for generators of terrain.
All terrain generators are tile based to support hierarchical level of detail. Tiling scheme of a generator is defined by the generator itself. Terrain generators are asked to produce new terrain tiles whenever that is deemed necessary by the terrain controller (that caches generated tiles).
Definition at line 42 of file qgsterraingenerator.h.
Enumeration of the available terrain generators.
Enumerator | |
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Flat | The whole terrain is flat area. |
Dem | Terrain is built from raster layer with digital elevation model. |
QuantizedMesh | Terrain is built from downloaded tiles in quantized mesh format. |
Definition at line 47 of file qgsterraingenerator.h.
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pure virtual |
Makes a copy of the current instance.
Implemented in QgsDemTerrainGenerator, and QgsFlatTerrainGenerator.
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inline |
Returns CRS of the terrain.
Definition at line 94 of file qgsterraingenerator.h.
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pure virtual |
extent of the terrain in terrain's CRS
Implemented in QgsDemTerrainGenerator, QgsFlatTerrainGenerator, and QuantizedMeshTerrainGenerator.
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virtual |
Returns height at (x,y) in terrain's CRS.
Reimplemented in QgsDemTerrainGenerator.
Definition at line 51 of file qgsterraingenerator.cpp.
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pure virtual |
Read terrain generator's configuration from XML.
Implemented in QgsDemTerrainGenerator, QgsFlatTerrainGenerator, and QuantizedMeshTerrainGenerator.
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inlinevirtual |
After read of XML, resolve references to any layers that have been read as layer IDs.
Reimplemented in QgsDemTerrainGenerator.
Definition at line 85 of file qgsterraingenerator.h.
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virtual |
Returns bounding box of the root chunk.
Definition at line 22 of file qgsterraingenerator.cpp.
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Returns error of the root chunk in world coordinates.
Definition at line 34 of file qgsterraingenerator.cpp.
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virtual |
Returns height range of the root chunk in world coordinates.
Reimplemented in QgsFlatTerrainGenerator.
Definition at line 44 of file qgsterraingenerator.cpp.
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inline |
Sets terrain entity for the generator (does not transfer ownership)
Definition at line 55 of file qgsterraingenerator.h.
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inline |
Returns tiling scheme of the terrain.
Definition at line 91 of file qgsterraingenerator.h.
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pure virtual |
What texture generator implementation is this.
Implemented in QgsDemTerrainGenerator, QgsFlatTerrainGenerator, and QuantizedMeshTerrainGenerator.
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static |
Converts terrain generator type enumeration into a string.
Definition at line 59 of file qgsterraingenerator.cpp.
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pure virtual |
Write terrain generator's configuration to XML.
Implemented in QgsDemTerrainGenerator, QgsFlatTerrainGenerator, and QuantizedMeshTerrainGenerator.
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protected |
Definition at line 98 of file qgsterraingenerator.h.
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protected |
Tiling scheme of the terrain.
Definition at line 97 of file qgsterraingenerator.h.