QGIS API Documentation
3.0.2-Girona (307d082)
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This class contains information how to simplify geometries fetched from a vector layer. More...
#include <qgsvectorsimplifymethod.h>
Public Types | |
enum | SimplifyAlgorithm { Distance = 0, SnapToGrid = 1, Visvalingam = 2 } |
Types of local simplification algorithms that can be used. More... | |
enum | SimplifyHint { NoSimplification = 0, GeometrySimplification = 1, AntialiasingSimplification = 2, FullSimplification = 3 } |
Simplification flags for fast rendering of features. More... | |
Public Member Functions | |
QgsVectorSimplifyMethod () | |
construct a default object More... | |
bool | forceLocalOptimization () const |
Gets where the simplification executes, after fetch the geometries from provider, or when supported, in provider before fetch the geometries. More... | |
float | maximumScale () const |
Gets the maximum scale at which the layer should be simplified. More... | |
void | setForceLocalOptimization (bool localOptimization) |
Sets where the simplification executes, after fetch the geometries from provider, or when supported, in provider before fetch the geometries. More... | |
void | setMaximumScale (float maximumScale) |
Sets the maximum scale at which the layer should be simplified. More... | |
void | setSimplifyAlgorithm (SimplifyAlgorithm simplifyAlgorithm) |
Sets the local simplification algorithm of the vector layer managed. More... | |
void | setSimplifyHints (SimplifyHints simplifyHints) |
Sets the simplification hints of the vector layer managed. More... | |
void | setThreshold (float threshold) |
Sets the simplification threshold of the vector layer managed. More... | |
void | setTolerance (double tolerance) |
Sets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal. More... | |
SimplifyAlgorithm | simplifyAlgorithm () const |
Gets the local simplification algorithm of the vector layer managed. More... | |
SimplifyHints | simplifyHints () const |
Gets the simplification hints of the vector layer managed. More... | |
float | threshold () const |
Gets the simplification threshold of the vector layer managed. More... | |
double | tolerance () const |
Gets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal. More... | |
This class contains information how to simplify geometries fetched from a vector layer.
Definition at line 29 of file qgsvectorsimplifymethod.h.
Types of local simplification algorithms that can be used.
Definition at line 54 of file qgsvectorsimplifymethod.h.
Simplification flags for fast rendering of features.
Definition at line 37 of file qgsvectorsimplifymethod.h.
QgsVectorSimplifyMethod::QgsVectorSimplifyMethod | ( | ) |
construct a default object
Definition at line 20 of file qgsvectorsimplifymethod.cpp.
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Gets where the simplification executes, after fetch the geometries from provider, or when supported, in provider before fetch the geometries.
Definition at line 80 of file qgsvectorsimplifymethod.h.
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Gets the maximum scale at which the layer should be simplified.
Definition at line 85 of file qgsvectorsimplifymethod.h.
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Sets where the simplification executes, after fetch the geometries from provider, or when supported, in provider before fetch the geometries.
Definition at line 78 of file qgsvectorsimplifymethod.h.
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Sets the maximum scale at which the layer should be simplified.
Definition at line 83 of file qgsvectorsimplifymethod.h.
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Sets the local simplification algorithm of the vector layer managed.
Definition at line 63 of file qgsvectorsimplifymethod.h.
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Sets the simplification hints of the vector layer managed.
Definition at line 49 of file qgsvectorsimplifymethod.h.
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Sets the simplification threshold of the vector layer managed.
Definition at line 73 of file qgsvectorsimplifymethod.h.
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Sets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.
Definition at line 68 of file qgsvectorsimplifymethod.h.
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Gets the local simplification algorithm of the vector layer managed.
Definition at line 65 of file qgsvectorsimplifymethod.h.
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Gets the simplification hints of the vector layer managed.
Definition at line 51 of file qgsvectorsimplifymethod.h.
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Gets the simplification threshold of the vector layer managed.
Definition at line 75 of file qgsvectorsimplifymethod.h.
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Gets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.
Definition at line 70 of file qgsvectorsimplifymethod.h.