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b1cadb1822
have specific icons, instead of generic qgis icon We consider these 'top level' algorithms, and using the standard algorithm icon should help reflect this and differentiate them from 3rd party algorithms.
94 lines
3.6 KiB
Python
94 lines
3.6 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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DensifyGeometries.py
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---------------------
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Date : October 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf 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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from builtins import range
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__author__ = 'Victor Olaya'
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__date__ = 'October 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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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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import os
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from qgis.core import (QgsWkbTypes,
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QgsFeatureSink,
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QgsApplication,
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QgsProcessingParameterFeatureSource,
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QgsProcessingParameterNumber,
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QgsProcessingParameterFeatureSink,
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QgsProcessingOutputVectorLayer,
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QgsProcessingParameterDefinition)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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class DensifyGeometries(QgisAlgorithm):
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INPUT = 'INPUT'
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VERTICES = 'VERTICES'
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OUTPUT = 'OUTPUT'
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def tags(self):
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return self.tr('add,vertices,points').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,
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self.tr('Input layer'), [QgsProcessingParameterDefinition.TypeVectorPolygon, QgsProcessingParameterDefinition.TypeVectorLine]))
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self.addParameter(QgsProcessingParameterNumber(self.VERTICES,
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self.tr('Vertices to add'), QgsProcessingParameterNumber.Integer,
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1, False, 1, 10000000))
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self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Densified')))
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self.addOutput(QgsProcessingOutputVectorLayer(self.OUTPUT, self.tr('Densified')))
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def name(self):
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return 'densifygeometries'
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def displayName(self):
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return self.tr('Densify geometries')
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def processAlgorithm(self, parameters, context, feedback):
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source = self.parameterAsSource(parameters, self.INPUT, context)
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vertices = self.parameterAsInt(parameters, self.VERTICES, context)
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(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
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source.fields(), source.wkbType(), source.sourceCrs())
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features = source.getFeatures()
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total = 100.0 / source.featureCount() if source.featureCount() else 0
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for current, f in enumerate(features):
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if feedback.isCanceled():
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break
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feature = f
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if feature.hasGeometry():
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new_geometry = feature.geometry().densifyByCount(vertices)
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feature.setGeometry(new_geometry)
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sink.addFeature(feature, QgsFeatureSink.FastInsert)
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feedback.setProgress(int(current * total))
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return {self.OUTPUT: dest_id}
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