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110 lines
4.4 KiB
Python
110 lines
4.4 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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QgsGeometry,
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QgsApplication,
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QgsMessageLog,
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QgsProcessingUtils)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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from processing.core.parameters import ParameterVector
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from processing.core.outputs import OutputVector
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from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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from processing.tools import dataobjects
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class FixGeometry(QgisAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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def icon(self):
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return QgsApplication.getThemeIcon("/providerQgis.svg")
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def svgIconPath(self):
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return QgsApplication.iconPath("providerQgis.svg")
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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(ParameterVector(self.INPUT,
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self.tr('Input Layer'),
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[dataobjects.TYPE_VECTOR_POLYGON, dataobjects.TYPE_VECTOR_LINE]))
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self.addOutput(OutputVector(self.OUTPUT,
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self.tr('Layer with fixed geometries')))
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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 processAlgorithm(self, parameters, context, feedback):
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layer = QgsProcessingUtils.mapLayerFromString(self.getParameterValue(self.INPUT), context)
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writer = self.getOutputFromName(
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self.OUTPUT).getVectorWriter(layer.fields(), QgsWkbTypes.multiType(layer.wkbType()), layer.crs(), context)
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features = QgsProcessingUtils.getFeatures(layer, context)
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if QgsProcessingUtils.featureCount(layer, context) == 0:
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raise GeoAlgorithmExecutionException(self.tr('There are no features in the input layer'))
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total = 100.0 / QgsProcessingUtils.featureCount(layer, context)
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for current, inputFeature in enumerate(features):
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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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QgsMessageLog.logMessage('makeValid failed for feature {}'.format(inputFeature.id()), self.tr('Processing'), QgsMessageLog.WARNING)
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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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writer.addFeature(outputFeature)
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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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writer.addFeature(outputFeature)
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feedback.setProgress(int(current * total))
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del writer
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