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qgsalgorithmarraytranslatedfeatures.cpp
226 lines (189 loc) · 9.41 KB
/
qgsalgorithmarraytranslatedfeatures.cpp
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/***************************************************************************
qgsalgorithmarraytranslatedfeatures.cpp
---------------------
begin : July 2018
copyright : (C) 2018 by Nyall Dawson
email : nyall dot dawson 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 "qgsalgorithmarraytranslatedfeatures.h"
///@cond PRIVATE
QString QgsArrayTranslatedFeaturesAlgorithm::name() const
{
return QStringLiteral( "arraytranslatedfeatures" );
}
QString QgsArrayTranslatedFeaturesAlgorithm::displayName() const
{
return QObject::tr( "Array of translated features" );
}
QStringList QgsArrayTranslatedFeaturesAlgorithm::tags() const
{
return QObject::tr( "translate,parallel,offset,duplicate,grid,spaced,moved,copy,features,objects,step,repeat" ).split( ',' );
}
QString QgsArrayTranslatedFeaturesAlgorithm::group() const
{
return QObject::tr( "Vector creation" );
}
QString QgsArrayTranslatedFeaturesAlgorithm::groupId() const
{
return QStringLiteral( "vectorcreation" );
}
QString QgsArrayTranslatedFeaturesAlgorithm::outputName() const
{
return QObject::tr( "Translated" );
}
QString QgsArrayTranslatedFeaturesAlgorithm::shortHelpString() const
{
return QObject::tr( "This algorithm creates copies of features in a layer, by creating multiple translated versions of each feature. "
"Each copy is incrementally displaced by a preset amount in the x/y/z/m axis." );
}
QString QgsArrayTranslatedFeaturesAlgorithm::shortDescription() const
{
return QObject::tr( "Creates multiple translated copies of features in a layer." );
}
QgsArrayTranslatedFeaturesAlgorithm *QgsArrayTranslatedFeaturesAlgorithm::createInstance() const
{
return new QgsArrayTranslatedFeaturesAlgorithm();
}
void QgsArrayTranslatedFeaturesAlgorithm::initParameters( const QVariantMap & )
{
std::unique_ptr< QgsProcessingParameterNumber > count = qgis::make_unique< QgsProcessingParameterNumber >( QStringLiteral( "COUNT" ),
QObject::tr( "Number of features to create" ), QgsProcessingParameterNumber::Integer,
10, false, 1 );
count->setIsDynamic( true );
count->setDynamicPropertyDefinition( QgsPropertyDefinition( QStringLiteral( "COUNT" ), QObject::tr( "Number of features to create" ), QgsPropertyDefinition::IntegerPositiveGreaterZero ) );
count->setDynamicLayerParameterName( QStringLiteral( "INPUT" ) );
addParameter( count.release() );
std::unique_ptr< QgsProcessingParameterDistance > xOffset = qgis::make_unique< QgsProcessingParameterDistance >( QStringLiteral( "DELTA_X" ),
QObject::tr( "Step distance (x-axis)" ),
0.0, QStringLiteral( "INPUT" ) );
xOffset->setIsDynamic( true );
xOffset->setDynamicPropertyDefinition( QgsPropertyDefinition( QStringLiteral( "DELTA_X" ), QObject::tr( "Offset distance (x-axis)" ), QgsPropertyDefinition::Double ) );
xOffset->setDynamicLayerParameterName( QStringLiteral( "INPUT" ) );
addParameter( xOffset.release() );
std::unique_ptr< QgsProcessingParameterDistance > yOffset = qgis::make_unique< QgsProcessingParameterDistance >( QStringLiteral( "DELTA_Y" ),
QObject::tr( "Step distance (y-axis)" ),
0.0, QStringLiteral( "INPUT" ) );
yOffset->setIsDynamic( true );
yOffset->setDynamicPropertyDefinition( QgsPropertyDefinition( QStringLiteral( "DELTA_Y" ), QObject::tr( "Offset distance (y-axis)" ), QgsPropertyDefinition::Double ) );
yOffset->setDynamicLayerParameterName( QStringLiteral( "INPUT" ) );
addParameter( yOffset.release() );
std::unique_ptr< QgsProcessingParameterNumber > zOffset = qgis::make_unique< QgsProcessingParameterNumber >( QStringLiteral( "DELTA_Z" ),
QObject::tr( "Step distance (z-axis)" ), QgsProcessingParameterNumber::Double,
0.0 );
zOffset->setIsDynamic( true );
zOffset->setDynamicPropertyDefinition( QgsPropertyDefinition( QStringLiteral( "DELTA_Z" ), QObject::tr( "Offset distance (z-axis)" ), QgsPropertyDefinition::Double ) );
zOffset->setDynamicLayerParameterName( QStringLiteral( "INPUT" ) );
addParameter( zOffset.release() );
std::unique_ptr< QgsProcessingParameterNumber > mOffset = qgis::make_unique< QgsProcessingParameterNumber >( QStringLiteral( "DELTA_M" ),
QObject::tr( "Step distance (m values)" ), QgsProcessingParameterNumber::Double,
0.0 );
mOffset->setIsDynamic( true );
mOffset->setDynamicPropertyDefinition( QgsPropertyDefinition( QStringLiteral( "DELTA_M" ), QObject::tr( "Offset distance (m values)" ), QgsPropertyDefinition::Double ) );
mOffset->setDynamicLayerParameterName( QStringLiteral( "INPUT" ) );
addParameter( mOffset.release() );
}
bool QgsArrayTranslatedFeaturesAlgorithm::prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback * )
{
mCount = parameterAsInt( parameters, QStringLiteral( "COUNT" ), context );
mDynamicCount = QgsProcessingParameters::isDynamic( parameters, QStringLiteral( "COUNT" ) );
if ( mDynamicCount )
mCountProperty = parameters.value( QStringLiteral( "COUNT" ) ).value< QgsProperty >();
mDeltaX = parameterAsDouble( parameters, QStringLiteral( "DELTA_X" ), context );
mDynamicDeltaX = QgsProcessingParameters::isDynamic( parameters, QStringLiteral( "DELTA_X" ) );
if ( mDynamicDeltaX )
mDeltaXProperty = parameters.value( QStringLiteral( "DELTA_X" ) ).value< QgsProperty >();
mDeltaY = parameterAsDouble( parameters, QStringLiteral( "DELTA_Y" ), context );
mDynamicDeltaY = QgsProcessingParameters::isDynamic( parameters, QStringLiteral( "DELTA_Y" ) );
if ( mDynamicDeltaY )
mDeltaYProperty = parameters.value( QStringLiteral( "DELTA_Y" ) ).value< QgsProperty >();
mDeltaZ = parameterAsDouble( parameters, QStringLiteral( "DELTA_Z" ), context );
mDynamicDeltaZ = QgsProcessingParameters::isDynamic( parameters, QStringLiteral( "DELTA_Z" ) );
if ( mDynamicDeltaZ )
mDeltaZProperty = parameters.value( QStringLiteral( "DELTA_Z" ) ).value< QgsProperty >();
mDeltaM = parameterAsDouble( parameters, QStringLiteral( "DELTA_M" ), context );
mDynamicDeltaM = QgsProcessingParameters::isDynamic( parameters, QStringLiteral( "DELTA_M" ) );
if ( mDynamicDeltaM )
mDeltaMProperty = parameters.value( QStringLiteral( "DELTA_M" ) ).value< QgsProperty >();
return true;
}
QgsFeatureList QgsArrayTranslatedFeaturesAlgorithm::processFeature( const QgsFeature &feature, QgsProcessingContext &context, QgsProcessingFeedback * )
{
QgsFeatureList result = QgsFeatureList();
if ( feature.hasGeometry() )
{
QgsGeometry geometry = feature.geometry();
const QgsAttributes attr = feature.attributes();
int count = mCount;
if ( mDynamicCount )
count = mCountProperty.valueAsInt( context.expressionContext(), count );
result.reserve( count + 1 );
double deltaX = mDeltaX;
if ( mDynamicDeltaX )
deltaX = mDeltaXProperty.valueAsDouble( context.expressionContext(), deltaX );
double deltaY = mDeltaY;
if ( mDynamicDeltaY )
deltaY = mDeltaYProperty.valueAsDouble( context.expressionContext(), deltaY );
double deltaZ = mDeltaZ;
if ( mDynamicDeltaZ )
deltaZ = mDeltaZProperty.valueAsDouble( context.expressionContext(), deltaZ );
double deltaM = mDeltaM;
if ( mDynamicDeltaM )
deltaM = mDeltaMProperty.valueAsDouble( context.expressionContext(), deltaM );
// we add the original feature only after adding initial z/m values if needed
if ( deltaZ != 0 && !geometry.constGet()->is3D() )
geometry.get()->addZValue( 0 );
if ( deltaM != 0 && !geometry.constGet()->isMeasure() )
geometry.get()->addMValue( 0 );
{
QgsFeature original = feature;
original.setGeometry( geometry );
QgsAttributes outAttrs = attr;
outAttrs << QVariant( 0 );
original.setAttributes( outAttrs );
result << original;
}
for ( int i = 0; i < count; ++i )
{
QgsFeature offsetFeature = feature;
geometry.translate( deltaX, deltaY, deltaZ, deltaM );
offsetFeature.setGeometry( geometry );
QgsAttributes outAttrs = attr;
outAttrs << QVariant( i + 1 );
offsetFeature.setAttributes( outAttrs );
result << offsetFeature;
}
}
else
{
result << feature;
}
return result;
}
QgsWkbTypes::Type QgsArrayTranslatedFeaturesAlgorithm::outputWkbType( QgsWkbTypes::Type inputWkbType ) const
{
QgsWkbTypes::Type wkb = inputWkbType;
if ( mDeltaZ != 0 )
wkb = QgsWkbTypes::addZ( wkb );
if ( mDeltaM != 0 )
wkb = QgsWkbTypes::addM( wkb );
return wkb;
}
QgsFields QgsArrayTranslatedFeaturesAlgorithm::outputFields( const QgsFields &inputFields ) const
{
QgsFields output = inputFields;
output.append( QgsField( QStringLiteral( "instance" ), QVariant::Int ) );
return output;
}
QgsFeatureSink::SinkFlags QgsArrayTranslatedFeaturesAlgorithm::sinkFlags() const
{
return QgsFeatureSink::RegeneratePrimaryKey;
}
///@endcond