mirror of
https://github.com/qgis/QGIS.git
synced 2025-04-25 00:03:06 -04:00
e0c12d519f
- "Extract nodes" renamed to "Extract vertices" - "Extract specific nodes" renamed to "Extract specific vertices"
102 lines
4.1 KiB
C++
102 lines
4.1 KiB
C++
/***************************************************************************
|
|
qgsalgorithmremoveduplicatevertices.cpp
|
|
---------------------
|
|
begin : November 2017
|
|
copyright : (C) 2017 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 "qgsalgorithmremoveduplicatevertices.h"
|
|
|
|
///@cond PRIVATE
|
|
|
|
QString QgsAlgorithmRemoveDuplicateVertices::name() const
|
|
{
|
|
return QStringLiteral( "removeduplicatevertices" );
|
|
}
|
|
|
|
QString QgsAlgorithmRemoveDuplicateVertices::displayName() const
|
|
{
|
|
return QObject::tr( "Remove duplicate vertices" );
|
|
}
|
|
|
|
QStringList QgsAlgorithmRemoveDuplicateVertices::tags() const
|
|
{
|
|
return QObject::tr( "points,valid,overlapping,vertex,nodes" ).split( ',' );
|
|
}
|
|
|
|
QString QgsAlgorithmRemoveDuplicateVertices::group() const
|
|
{
|
|
return QObject::tr( "Vector geometry" );
|
|
}
|
|
|
|
QString QgsAlgorithmRemoveDuplicateVertices::groupId() const
|
|
{
|
|
return QStringLiteral( "vectorgeometry" );
|
|
}
|
|
|
|
QString QgsAlgorithmRemoveDuplicateVertices::outputName() const
|
|
{
|
|
return QObject::tr( "Cleaned" );
|
|
}
|
|
|
|
QString QgsAlgorithmRemoveDuplicateVertices::shortHelpString() const
|
|
{
|
|
return QObject::tr( "This algorithm removes duplicate vertices from features, wherever removing the vertices does "
|
|
"not result in a degenerate geometry.\n\n"
|
|
"The tolerance parameter specifies the tolerance for coordinates when determining whether "
|
|
"vertices are identical.\n\n"
|
|
"By default, z values are not considered when detecting duplicate vertices. E.g. two vertices "
|
|
"with the same x and y coordinate but different z values will still be considered "
|
|
"duplicate and one will be removed. If the Use Z Value parameter is true, then the z values are "
|
|
"also tested and vertices with the same x and y but different z will be maintained.\n\n"
|
|
"Note that duplicate vertices are not tested between different parts of a multipart geometry. E.g. "
|
|
"a multipoint geometry with overlapping points will not be changed by this method." );
|
|
}
|
|
|
|
QgsAlgorithmRemoveDuplicateVertices *QgsAlgorithmRemoveDuplicateVertices::createInstance() const
|
|
{
|
|
return new QgsAlgorithmRemoveDuplicateVertices();
|
|
}
|
|
|
|
void QgsAlgorithmRemoveDuplicateVertices::initParameters( const QVariantMap & )
|
|
{
|
|
addParameter( new QgsProcessingParameterNumber( QStringLiteral( "TOLERANCE" ),
|
|
QObject::tr( "Tolerance" ), QgsProcessingParameterNumber::Double,
|
|
0.000001, false, 0, 10000000.0 ) );
|
|
addParameter( new QgsProcessingParameterBoolean( QStringLiteral( "USE_Z_VALUE" ),
|
|
QObject::tr( "Use Z Value" ), false ) );
|
|
}
|
|
|
|
bool QgsAlgorithmRemoveDuplicateVertices::prepareAlgorithm( const QVariantMap ¶meters, QgsProcessingContext &context, QgsProcessingFeedback * )
|
|
{
|
|
mTolerance = parameterAsDouble( parameters, QStringLiteral( "TOLERANCE" ), context );
|
|
mUseZValues = parameterAsBool( parameters, QStringLiteral( "USE_Z_VALUE" ), context );
|
|
return true;
|
|
}
|
|
|
|
QgsFeature QgsAlgorithmRemoveDuplicateVertices::processFeature( const QgsFeature &feature, QgsProcessingContext &, QgsProcessingFeedback * )
|
|
{
|
|
QgsFeature f = feature;
|
|
if ( f.hasGeometry() )
|
|
{
|
|
QgsGeometry geometry = f.geometry();
|
|
geometry.removeDuplicateNodes( mTolerance, mUseZValues );
|
|
f.setGeometry( geometry );
|
|
}
|
|
return f;
|
|
}
|
|
|
|
///@endcond
|
|
|
|
|