QGIS API Documentation  3.26.3-Buenos Aires (65e4edfdad)
qgsalgorithmroundness.h
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1 /***************************************************************************
2  qgsalgorithmroundness.h
3  ---------------------
4  begin : September 2021
5  copyright : (C) 2021 by Antoine Facchini
6  email : antoine dot facchini @oslandia 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 QGSALGORITHMROUNDNESS_H
19 #define QGSALGORITHMROUNDNESS_H
20 
21 #define SIP_NO_FILE
22 
23 #include "qgis_sip.h"
24 #include "qgsprocessingalgorithm.h"
25 
27 
31 class QgsRoundnessAlgorithm : public QgsProcessingFeatureBasedAlgorithm
32 {
33 
34  public:
35 
36  QgsRoundnessAlgorithm() = default;
37  QString name() const override;
38  QString displayName() const override;
39  QStringList tags() const override;
40  QString group() const override;
41  QString groupId() const override;
42  QString shortHelpString() const override;
43  QString shortDescription() const override;
44  QgsRoundnessAlgorithm *createInstance() const override SIP_FACTORY;
45  QList<int> inputLayerTypes() const override;
46 
47  protected:
48  QString outputName() const override;
50  QgsFields outputFields( const QgsFields &inputFields ) const override;
51 
52  QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override;
53 };
54 
55 
57 
58 #endif // QGSALGORITHMROUNDNESS_H
59 
60 
QgsProcessingAlgorithm::shortDescription
virtual QString shortDescription() const
Returns an optional translated short description of the algorithm.
Definition: qgsprocessingalgorithm.cpp:60
QgsProcessingAlgorithm::displayName
virtual QString displayName() const =0
Returns the translated algorithm name, which should be used for any user-visible display of the algor...
QgsProcessingFeedback
Base class for providing feedback from a processing algorithm.
Definition: qgsprocessingfeedback.h:37
QgsFields
Container of fields for a vector layer.
Definition: qgsfields.h:44
QgsProcessingAlgorithm::groupId
virtual QString groupId() const
Returns the unique ID of the group this algorithm belongs to.
Definition: qgsprocessingalgorithm.h:234
QgsProcessingAlgorithm::createInstance
virtual QgsProcessingAlgorithm * createInstance() const =0
Creates a new instance of the algorithm class.
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
QgsProcessingAlgorithm::name
virtual QString name() const =0
Returns the algorithm name, used for identifying the algorithm.
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::outputLayerType
virtual QgsProcessing::SourceType outputLayerType() const
Returns the layer type for layers generated by this algorithm, if this is possible to determine in ad...
Definition: qgsprocessingalgorithm.cpp:1040
QgsProcessingFeatureBasedAlgorithm::outputName
virtual QString outputName() const =0
Returns the translated, user visible name for any layers created by this algorithm.
QgsProcessingFeatureBasedAlgorithm::outputFields
virtual QgsFields outputFields(const QgsFields &inputFields) const
Maps the input source fields (inputFields) to corresponding output fields generated by the algorithm.
Definition: qgsprocessingalgorithm.cpp:1060
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
QgsProcessing::SourceType
SourceType
Data source types enum.
Definition: qgsprocessing.h:45
QgsProcessingFeatureBasedAlgorithm::inputLayerTypes
virtual QList< int > inputLayerTypes() const
Returns the valid input layer types for the source layer for this algorithm.
Definition: qgsprocessingalgorithm.cpp:1035
QgsProcessingAlgorithm::tags
virtual QStringList tags() const
Returns a list of tags which relate to the algorithm, and are used to assist users in searching for s...
Definition: qgsprocessingalgorithm.h:181