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77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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Translate.py
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--------------
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Date : August 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__ = 'August 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 qgis.core import (QgsProcessingException,
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QgsProcessingParameterNumber)
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from processing.algs.qgis.QgisAlgorithm import QgisFeatureBasedAlgorithm
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class Translate(QgisFeatureBasedAlgorithm):
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DELTA_X = 'DELTA_X'
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DELTA_Y = 'DELTA_Y'
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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.delta_x = 0
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self.delta_y = 0
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def initParameters(self, config=None):
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self.addParameter(QgsProcessingParameterNumber(self.DELTA_X,
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self.tr('Offset distance (x-axis)'), QgsProcessingParameterNumber.Double, defaultValue=0.0))
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self.addParameter(QgsProcessingParameterNumber(self.DELTA_Y,
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self.tr('Offset distance (y-axis)'), QgsProcessingParameterNumber.Double, defaultValue=0.0))
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def name(self):
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return 'translategeometry'
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def displayName(self):
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return self.tr('Translate geometry')
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def outputName(self):
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return self.tr('Translated')
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def prepareAlgorithm(self, parameters, context, feedback):
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self.delta_x = self.parameterAsDouble(parameters, self.DELTA_X, context)
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self.delta_y = self.parameterAsDouble(parameters, self.DELTA_Y, context)
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return True
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def processFeature(self, feature, feedback):
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input_geometry = feature.geometry()
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if input_geometry:
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output_geometry = input_geometry
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output_geometry.translate(self.delta_x, self.delta_y)
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if not output_geometry:
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raise QgsProcessingException(
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self.tr('Error translating geometry'))
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feature.setGeometry(output_geometry)
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return feature
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