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2951afa324
Also allow feature based algorithms to customise their appectable input layers types and set suitable filters for all applicable algorithms
73 lines
2.5 KiB
Python
73 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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DeleteHoles.py
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---------------------
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Date : April 2015
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Copyright : (C) 2015 by Etienne Trimaille
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Etienne Trimaille'
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__date__ = 'April 2015'
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__copyright__ = '(C) 2015, Etienne Trimaille'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import (QgsProcessingParameterNumber,
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QgsProcessing)
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from processing.algs.qgis.QgisAlgorithm import QgisFeatureBasedAlgorithm
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class DeleteHoles(QgisFeatureBasedAlgorithm):
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MIN_AREA = 'MIN_AREA'
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def __init__(self):
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super().__init__()
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self.min_area = None
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def initParameters(self, config=None):
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self.addParameter(QgsProcessingParameterNumber(self.MIN_AREA,
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self.tr('Remove holes with area less than'), QgsProcessingParameterNumber.Double,
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0, True, 0.0, 10000000.0))
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def tags(self):
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return self.tr('remove,delete,drop,holes,rings,fill').split(',')
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def group(self):
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return self.tr('Vector geometry')
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def name(self):
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return 'deleteholes'
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def displayName(self):
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return self.tr('Delete holes')
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def outputName(self):
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return self.tr('Cleaned')
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def inputLayerTypes(self):
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return [QgsProcessing.TypeVectorPolygon]
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def prepareAlgorithm(self, parameters, context, feedback):
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self.min_area = self.parameterAsDouble(parameters, self.MIN_AREA, context)
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if self.min_area == 0.0:
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self.min_area = -1.0
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return True
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def processFeature(self, feature, feedback):
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if feature.hasGeometry():
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feature.setGeometry(feature.geometry().removeInteriorRings(self.min_area))
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return feature
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