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110 lines
4.6 KiB
Python
110 lines
4.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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FixGeometry.py
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-----------------------
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Date : January 2017
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Copyright : (C) 2017 by Alexander Bruy
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Email : alexander dot bruy at gmail dot com
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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__ = 'Alexander Bruy'
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__date__ = 'January 2017'
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__copyright__ = '(C) 2017, Alexander Bruy'
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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 (QgsWkbTypes,
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QgsFeatureSink,
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QgsFeatureRequest,
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QgsProcessingFeatureSource,
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QgsGeometry,
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QgsProcessingParameterDefinition,
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QgsProcessingParameterFeatureSource,
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QgsProcessingParameterFeatureSink,
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QgsProcessingOutputVectorLayer)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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class FixGeometry(QgisAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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def tags(self):
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return self.tr('repair,invalid,geometry').split(',')
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def group(self):
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return self.tr('Vector geometry tools')
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def __init__(self):
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super().__init__()
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self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT, self.tr('Input layer'), [QgsProcessingParameterDefinition.TypeVectorLine, QgsProcessingParameterDefinition.TypeVectorPolygon]))
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self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Fixed geometries')))
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self.addOutput(QgsProcessingOutputVectorLayer(self.OUTPUT, self.tr("Fixed geometries")))
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self.source = None
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self.sink = None
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self.dest_id = None
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def name(self):
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return 'fixgeometries'
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def displayName(self):
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return self.tr('Fix geometries')
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def prepareAlgorithm(self, parameters, context, feedback):
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self.source = self.parameterAsSource(parameters, self.INPUT, context)
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(self.sink, self.dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
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self.source.fields(), QgsWkbTypes.multiType(self.source.wkbType()), self.source.sourceCrs())
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return True
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def processAlgorithm(self, context, feedback):
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features = self.source.getFeatures(QgsFeatureRequest(), QgsProcessingFeatureSource.FlagSkipGeometryValidityChecks)
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total = 100.0 / self.source.featureCount() if self.source.featureCount() else 0
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for current, inputFeature in enumerate(features):
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if feedback.isCanceled():
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break
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outputFeature = inputFeature
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if inputFeature.geometry():
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outputGeometry = inputFeature.geometry().makeValid()
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if not outputGeometry:
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feedback.pushInfo('makeValid failed for feature {}'.format(inputFeature.id()))
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if outputGeometry.wkbType() == QgsWkbTypes.Unknown or QgsWkbTypes.flatType(outputGeometry.geometry().wkbType()) == QgsWkbTypes.GeometryCollection:
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tmpGeometries = outputGeometry.asGeometryCollection()
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for g in tmpGeometries:
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if g.type() == inputFeature.geometry().type():
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try:
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g.convertToMultiType()
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outputFeature.setGeometry(QgsGeometry(g))
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self.sink.addFeature(outputFeature, QgsFeatureSink.FastInsert)
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except:
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pass
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feedback.setProgress(int(current * total))
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continue
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outputGeometry.convertToMultiType()
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outputFeature.setGeometry(outputGeometry)
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self.sink.addFeature(outputFeature, QgsFeatureSink.FastInsert)
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feedback.setProgress(int(current * total))
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return True
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def postProcessAlgorithm(self, context, feedback):
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return {self.OUTPUT: self.dest_id}
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