QGIS API Documentation  3.26.3-Buenos Aires (65e4edfdad)
qgsalgorithmfiltervertices.h
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1 /***************************************************************************
2  qgsalgorithmfiltervertices.h
3  ----------------------------
4  begin : July 2018
5  copyright : (C) 2018 by Nyall Dawson
6  email : nyall dot dawson at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSALGORITHMFILTERVERTICES_H
19 #define QGSALGORITHMFILTERVERTICES_H
20 
21 #define SIP_NO_FILE
22 
23 #include "qgis_sip.h"
24 #include "qgsprocessingalgorithm.h"
26 
28 
32 class QgsFilterVerticesAlgorithmBase : public QgsProcessingFeatureBasedAlgorithm
33 {
34 
35  public:
36 
37  QString group() const override final;
38  QString groupId() const override final;
39  QList<int> inputLayerTypes() const override final;
40  void initParameters( const QVariantMap &configuration = QVariantMap() ) override final;
41  QString shortHelpString() const override final;
42 
43  protected:
44  QString outputName() const override final;
45  bool prepareAlgorithm( const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override final;
46  QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &, QgsProcessingFeedback *feedback ) override final;
47 
48  private:
49 
50  double mMin = 0.0;
51  bool mDynamicMin = false;
52  QgsProperty mMinProperty;
53 
54  double mMax = 0.0;
55  bool mDynamicMax = false;
56  QgsProperty mMaxProperty;
57 
58  virtual QString componentString() const = 0;
59  virtual void filter( QgsGeometry &geometry, double min, double max ) const = 0;
60 };
61 
65 class QgsFilterVerticesByM : public QgsFilterVerticesAlgorithmBase
66 {
67 
68  public:
69 
70  QgsFilterVerticesByM() = default;
71  QString name() const override;
72  QString displayName() const override;
73  QStringList tags() const override;
74  QgsFilterVerticesByM *createInstance() const override SIP_FACTORY;
75  bool supportInPlaceEdit( const QgsMapLayer *layer ) const override;
76 
77  private:
78 
79  QString componentString() const override;
80  void filter( QgsGeometry &geometry, double min, double max ) const override;
81 
82 };
83 
84 
88 class QgsFilterVerticesByZ : public QgsFilterVerticesAlgorithmBase
89 {
90 
91  public:
92 
93  QgsFilterVerticesByZ() = default;
94  QString name() const override;
95  QString displayName() const override;
96  QStringList tags() const override;
97  QgsFilterVerticesByZ *createInstance() const override SIP_FACTORY;
98  bool supportInPlaceEdit( const QgsMapLayer *layer ) const override;
99 
100  private:
101 
102  QString componentString() const override;
103  void filter( QgsGeometry &geometry, double min, double max ) const override;
104 };
105 
106 
108 
109 #endif // QGSALGORITHMFILTERVERTICES_H
110 
111 
QgsProperty
A store for object properties.
Definition: qgsproperty.h:230
QgsProcessingFeedback
Base class for providing feedback from a processing algorithm.
Definition: qgsprocessingfeedback.h:37
QgsProcessingFeatureBasedAlgorithm::initParameters
virtual void initParameters(const QVariantMap &configuration=QVariantMap())
Initializes any extra parameters added by the algorithm subclass.
Definition: qgsprocessingalgorithm.cpp:1070
QgsProcessingAlgorithm::groupId
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
Definition: qgsprocessingalgorithm.h:234
QgsProcessingAlgorithm::prepareAlgorithm
virtual bool prepareAlgorithm(const QVariantMap &parameters, QgsProcessingContext &context, QgsProcessingFeedback *feedback) SIP_THROW(QgsProcessingException)
Prepares the algorithm to run using the specified parameters.
Definition: qgsprocessingalgorithm.cpp:451
QgsProcessingFeatureBasedAlgorithm
An abstract QgsProcessingAlgorithm base class for processing algorithms which operate "feature-by-fea...
Definition: qgsprocessingalgorithm.h:1143
SIP_FACTORY
#define SIP_FACTORY
Definition: qgis_sip.h:76
QgsProcessingFeatureBasedAlgorithm::processFeature
virtual QgsFeatureList processFeature(const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback) SIP_THROW(QgsProcessingException)=0
Processes an individual input feature from the source.
QgsProcessingContext
Contains information about the context in which a processing algorithm is executed.
Definition: qgsprocessingcontext.h:46
qgsprocessingalgorithm.h
qgis_sip.h
QgsFeatureList
QList< QgsFeature > QgsFeatureList
Definition: qgsfeature.h:882
QgsProcessingAlgorithm::shortHelpString
virtual QString shortHelpString() const
Returns a localised short helper string for the algorithm.
Definition: qgsprocessingalgorithm.cpp:65
QgsProcessingFeatureBasedAlgorithm::outputName
virtual QString outputName() const =0
Returns the translated, user visible name for any layers created by this algorithm.
QgsGeometry
A geometry is the spatial representation of a feature.
Definition: qgsgeometry.h:124
QgsMapLayer
Base class for all map layer types. This is the base class for all map layer types (vector,...
Definition: qgsmaplayer.h:72
qgsmaptopixelgeometrysimplifier.h
QgsProcessingAlgorithm::group
virtual QString group() const
Returns the name of the group this algorithm belongs to.
Definition: qgsprocessingalgorithm.h:225
QgsFeature
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
Definition: qgsfeature.h:55
QgsProcessingFeatureBasedAlgorithm::inputLayerTypes
virtual QList< int > inputLayerTypes() const
Returns the valid input layer types for the source layer for this algorithm.
Definition: qgsprocessingalgorithm.cpp:1035