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[processing] port set Z value algorithm to C++
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,128 @@ | ||
| /*************************************************************************** | ||
| qgsalgorithmsetzvalue.cpp | ||
| --------------------- | ||
| begin : November 2019 | ||
| copyright : (C) 2019 by Alexander Bruy | ||
| email : alexander dot bruy at gmail dot com | ||
| ***************************************************************************/ | ||
|
|
||
| /*************************************************************************** | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
||
| #include "qgsalgorithmsetzvalue.h" | ||
| #include "qgsvectorlayer.h" | ||
|
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| ///@cond PRIVATE | ||
|
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| QString QgsSetZValueAlgorithm::name() const | ||
| { | ||
| return QStringLiteral( "setzvalue" ); | ||
| } | ||
|
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| QString QgsSetZValueAlgorithm::displayName() const | ||
| { | ||
| return QObject::tr( "Set Z value" ); | ||
| } | ||
|
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| QStringList QgsSetZValueAlgorithm::tags() const | ||
| { | ||
| return QObject::tr( "set,add,z,25d,3d,values" ).split( ',' ); | ||
| } | ||
|
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| QString QgsSetZValueAlgorithm::group() const | ||
| { | ||
| return QObject::tr( "Vector geometry" ); | ||
| } | ||
|
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| QString QgsSetZValueAlgorithm::groupId() const | ||
| { | ||
| return QStringLiteral( "vectorgeometry" ); | ||
| } | ||
|
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| QString QgsSetZValueAlgorithm::shortHelpString() const | ||
| { | ||
| return QObject::tr( "This algorithm sets the Z value for geometries in a layer.\n\n" | ||
| "If Z values already exist in the layer, they will be overwritten " | ||
| "with the new value. If no Z values exist, the geometry will be " | ||
| "upgraded to include Z values and the specified value used as " | ||
| "the initial Z value for all geometries." ); | ||
| } | ||
|
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| QString QgsSetZValueAlgorithm::outputName() const | ||
| { | ||
| return QObject::tr( "Z Added" ); | ||
| } | ||
|
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| QgsSetZValueAlgorithm *QgsSetZValueAlgorithm::createInstance() const | ||
| { | ||
| return new QgsSetZValueAlgorithm(); | ||
| } | ||
|
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| bool QgsSetZValueAlgorithm::supportInPlaceEdit( const QgsMapLayer *l ) const | ||
| { | ||
| const QgsVectorLayer *layer = qobject_cast< const QgsVectorLayer * >( l ); | ||
| if ( !layer ) | ||
| return false; | ||
|
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| return QgsProcessingFeatureBasedAlgorithm::supportInPlaceEdit( l ) && QgsWkbTypes::hasZ( layer->wkbType() ); | ||
| } | ||
|
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| QgsProcessingFeatureSource::Flag QgsSetZValueAlgorithm::sourceFlags() const | ||
| { | ||
| return QgsProcessingFeatureSource::FlagSkipGeometryValidityChecks; | ||
| } | ||
|
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| QgsWkbTypes::Type QgsSetZValueAlgorithm::outputWkbType( QgsWkbTypes::Type type ) const | ||
| { | ||
| return QgsWkbTypes::addZ( type ); | ||
| } | ||
|
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| void QgsSetZValueAlgorithm::initParameters( const QVariantMap & ) | ||
| { | ||
| auto zValueParam = qgis::make_unique < QgsProcessingParameterNumber >( QStringLiteral( "Z_VALUE" ), QObject::tr( "Z Value" ), QgsProcessingParameterNumber::Double, 0.0 ); | ||
| zValueParam->setIsDynamic( true ); | ||
| zValueParam->setDynamicPropertyDefinition( QgsPropertyDefinition( QStringLiteral( "Z_VALUE" ), QObject::tr( "Z Value" ), QgsPropertyDefinition::Double ) ); | ||
| zValueParam->setDynamicLayerParameterName( QStringLiteral( "INPUT" ) ); | ||
| addParameter( zValueParam.release() ); | ||
| } | ||
|
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| bool QgsSetZValueAlgorithm::prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback * ) | ||
| { | ||
| mZValue = parameterAsDouble( parameters, QStringLiteral( "Z_VALUE" ), context ); | ||
| mDynamicZValue = QgsProcessingParameters::isDynamic( parameters, QStringLiteral( "Z_VALUE" ) ); | ||
| if ( mDynamicZValue ) | ||
| mZValueProperty = parameters.value( QStringLiteral( "Z_VALUE" ) ).value< QgsProperty >(); | ||
|
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| return true; | ||
| } | ||
|
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| QgsFeatureList QgsSetZValueAlgorithm::processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback * ) | ||
| { | ||
| QgsFeature f = feature; | ||
|
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| if ( f.hasGeometry() ) | ||
| { | ||
| std::unique_ptr< QgsAbstractGeometry > newGeometry( f.geometry().constGet()->clone() ); | ||
| // addZValue won't alter existing Z values, so drop them first | ||
| if ( QgsWkbTypes::hasZ( newGeometry->wkbType() ) ) | ||
| newGeometry->dropZValue(); | ||
|
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| double z = mZValue; | ||
| if ( mDynamicZValue ) | ||
| z = mZValueProperty.valueAsDouble( context.expressionContext(), z ); | ||
|
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| newGeometry->addZValue( z ); | ||
|
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| f.setGeometry( QgsGeometry( std::move( newGeometry ) ) ); | ||
| } | ||
|
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| return QgsFeatureList() << f; | ||
| } | ||
|
|
||
| ///@endcond |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| /*************************************************************************** | ||
| qgsalgorithmsetzvalue.h | ||
| --------------------- | ||
| begin : November 2019 | ||
| copyright : (C) 2019 by Alexander Bruy | ||
| email : alexander dot bruy at gmail dot com | ||
| ***************************************************************************/ | ||
|
|
||
| /*************************************************************************** | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
||
| #ifndef QGSALGORITHMSETZVALUE_H | ||
| #define QGSALGORITHMSETZVALUE_H | ||
|
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| #define SIP_NO_FILE | ||
|
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| #include "qgis_sip.h" | ||
| #include "qgsprocessingalgorithm.h" | ||
|
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| ///@cond PRIVATE | ||
|
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| /** | ||
| * Native set Z value algorithm. | ||
| */ | ||
| class QgsSetZValueAlgorithm : public QgsProcessingFeatureBasedAlgorithm | ||
| { | ||
|
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| public: | ||
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| QgsSetZValueAlgorithm() = default; | ||
| QString name() const override; | ||
| QString displayName() const override; | ||
| QStringList tags() const override; | ||
| QString group() const override; | ||
| QString groupId() const override; | ||
| QString shortHelpString() const override; | ||
| QgsSetZValueAlgorithm *createInstance() const override SIP_FACTORY; | ||
|
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| protected: | ||
|
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| void initParameters( const QVariantMap &configuration = QVariantMap() ) override; | ||
| QString outputName() const override; | ||
| QgsWkbTypes::Type outputWkbType( QgsWkbTypes::Type inputWkbType ) const override; | ||
| QgsProcessingFeatureSource::Flag sourceFlags() const override; | ||
| bool supportInPlaceEdit( const QgsMapLayer *l ) const override; | ||
|
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| bool prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override; | ||
| QgsFeatureList processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback *feedback ) override; | ||
|
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| private: | ||
|
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| double mZValue = 0.0; | ||
| bool mDynamicZValue = false; | ||
| QgsProperty mZValueProperty; | ||
| }; | ||
|
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| ///@endcond PRIVATE | ||
|
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| #endif // QGSALGORITHMSETZVALUE_H |
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