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93 lines
3.9 KiB
Python
93 lines
3.9 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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Orthagonalize.py
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----------------
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Date : December 2016
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Copyright : (C) 2016 by Nyall Dawson
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Email : nyall dot dawson 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__ = 'Nyall Dawson'
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__date__ = 'December 2016'
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__copyright__ = '(C) 2016, Nyall Dawson'
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# This will get replaced with a git SHA1 when you do a git archive323
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__revision__ = '$Format:%H$'
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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from processing.core.parameters import ParameterVector, ParameterNumber
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from processing.core.outputs import OutputVector
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from processing.tools import dataobjects, vector
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class Orthagonalize(GeoAlgorithm):
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INPUT_LAYER = 'INPUT_LAYER'
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OUTPUT_LAYER = 'OUTPUT_LAYER'
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MAX_ITERATIONS = 'MAX_ITERATIONS'
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DISTANCE_THRESHOLD = 'DISTANCE_THRESHOLD'
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ANGLE_TOLERANCE = 'ANGLE_TOLERANCE'
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def defineCharacteristics(self):
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self.name, self.i18n_name = self.trAlgorithm('Orthagonalize')
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self.group, self.i18n_group = self.trAlgorithm('Vector geometry tools')
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self.tags = self.tr('rectangle,perpendicular,right,angles,square,quadrilateralise')
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self.addParameter(ParameterVector(self.INPUT_LAYER,
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self.tr('Input layer'), [dataobjects.TYPE_VECTOR_LINE,
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dataobjects.TYPE_VECTOR_POLYGON]))
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self.addParameter(ParameterNumber(self.ANGLE_TOLERANCE,
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self.tr('Maximum angle tolerance (degrees)'),
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0.0, 45.0, 15.0))
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max_iterations = ParameterNumber(self.MAX_ITERATIONS,
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self.tr('Maximum algorithm iterations'),
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1, 10000, 1000)
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max_iterations.isAdvanced = True
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self.addParameter(max_iterations)
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self.addOutput(OutputVector(self.OUTPUT_LAYER, self.tr('Orthagonalized')))
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def processAlgorithm(self, progress):
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layer = dataobjects.getObjectFromUri(
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self.getParameterValue(self.INPUT_LAYER))
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max_iterations = self.getParameterValue(self.MAX_ITERATIONS)
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angle_tolerance = self.getParameterValue(self.ANGLE_TOLERANCE)
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writer = self.getOutputFromName(
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self.OUTPUT_LAYER).getVectorWriter(
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layer.fields(),
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layer.wkbType(),
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layer.crs())
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features = vector.features(layer)
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total = 100.0 / len(features)
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for current, input_feature in enumerate(features):
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output_feature = input_feature
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input_geometry = input_feature.geometry()
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if input_geometry:
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output_geometry = input_geometry.orthagonalize(1.0e-8, max_iterations, angle_tolerance)
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if not output_geometry:
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raise GeoAlgorithmExecutionException(
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self.tr('Error orthagonalizing geometry'))
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output_feature.setGeometry(output_geometry)
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writer.addFeature(output_feature)
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progress.setPercentage(int(current * total))
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del writer
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