QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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A terrain provider where the terrain is a simple flat surface. More...
#include <qgsterrainprovider.h>
Public Member Functions | |
QgsFlatTerrainProvider ()=default | |
QgsFlatTerrainProvider * | clone () const override |
Creates a clone of the provider and returns the new object. | |
QgsCoordinateReferenceSystem | crs () const override |
Returns the native coordinate reference system of the terrain provider. | |
bool | equals (const QgsAbstractTerrainProvider *other) const override |
Returns true if the provider is equal to other. | |
double | heightAt (double x, double y) const override |
Returns the height at the point (x,y) in the terrain provider's native crs(). | |
void | prepare () override |
Called on the main thread prior to accessing the provider from a background thread. | |
bool | readXml (const QDomElement &element, const QgsReadWriteContext &context) override |
Reads the terrain provider state from a DOM element. | |
QString | type () const override |
Returns the unique type ID string for the provider. | |
QDomElement | writeXml (QDomDocument &document, const QgsReadWriteContext &context) const override |
Returns a DOM element representing the state of the terrain provider. | |
Public Member Functions inherited from QgsAbstractTerrainProvider | |
virtual | ~QgsAbstractTerrainProvider () |
double | offset () const |
Returns the vertical offset value, used for adjusting the heights from the terrain provider. | |
QgsAbstractTerrainProvider & | operator= (const QgsAbstractTerrainProvider &other)=delete |
virtual void | resolveReferences (const QgsProject *project) |
Resolves reference to layers from stored layer ID (if it has not been resolved already) | |
double | scale () const |
Returns the vertical scale factor, which can be used to exaggerate vertical heights. | |
void | setOffset (double offset) |
Returns the vertical offset value, used for adjusting the heights from the terrain provider. | |
void | setScale (double scale) |
Sets the vertical scale factor, which can be used to exaggerate vertical heights. | |
Additional Inherited Members | |
Protected Member Functions inherited from QgsAbstractTerrainProvider | |
QgsAbstractTerrainProvider ()=default | |
QgsAbstractTerrainProvider (const QgsAbstractTerrainProvider &other) | |
void | readCommonProperties (const QDomElement &element, const QgsReadWriteContext &context) |
Reads common properties from a DOM element. | |
void | writeCommonProperties (QDomElement &element, const QgsReadWriteContext &context) const |
Writes common properties to a DOM element. | |
Protected Attributes inherited from QgsAbstractTerrainProvider | |
double | mOffset = 0.0 |
Offset amount. | |
double | mScale = 1.0 |
Scale factor. | |
A terrain provider where the terrain is a simple flat surface.
Definition at line 195 of file qgsterrainprovider.h.
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default |
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overridevirtual |
Creates a clone of the provider and returns the new object.
Ownership is transferred to the caller.
Implements QgsAbstractTerrainProvider.
Definition at line 84 of file qgsterrainprovider.cpp.
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overridevirtual |
Returns the native coordinate reference system of the terrain provider.
Implements QgsAbstractTerrainProvider.
Definition at line 74 of file qgsterrainprovider.cpp.
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overridevirtual |
Returns true
if the provider is equal to other.
Implements QgsAbstractTerrainProvider.
Definition at line 95 of file qgsterrainprovider.cpp.
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overridevirtual |
Returns the height at the point (x,y) in the terrain provider's native crs().
Returns NaN if the height could not be obtained at the specified point.
Implements QgsAbstractTerrainProvider.
Definition at line 79 of file qgsterrainprovider.cpp.
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overridevirtual |
Called on the main thread prior to accessing the provider from a background thread.
Subclasses must implement suitable logic in order to prepare for thread-safe calculation of terrain heights on background threads.
Implements QgsAbstractTerrainProvider.
Definition at line 89 of file qgsterrainprovider.cpp.
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overridevirtual |
Reads the terrain provider state from a DOM element.
Implements QgsAbstractTerrainProvider.
Definition at line 57 of file qgsterrainprovider.cpp.
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overridevirtual |
Returns the unique type ID string for the provider.
Implements QgsAbstractTerrainProvider.
Definition at line 52 of file qgsterrainprovider.cpp.
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overridevirtual |
Returns a DOM element representing the state of the terrain provider.
Implements QgsAbstractTerrainProvider.
Definition at line 67 of file qgsterrainprovider.cpp.