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[processing] split offset curve and single-side buffer alg into two s…
…eparate algs
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| # -*- coding: utf-8 -*- | ||
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| """ | ||
| *************************************************************************** | ||
| offsetcurve.py | ||
| --------------------- | ||
| Date : Janaury 2015 | ||
| Copyright : (C) 2015 by Giovanni Manghi | ||
| Email : giovanni dot manghi at naturalgis dot pt | ||
| *************************************************************************** | ||
| * * | ||
| * This program is free software; you can redistribute it and/or modify * | ||
| * it under the terms of the GNU General Public License as published by * | ||
| * the Free Software Foundation; either version 2 of the License, or * | ||
| * (at your option) any later version. * | ||
| * * | ||
| *************************************************************************** | ||
| """ | ||
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| __author__ = 'Giovanni Manghi' | ||
| __date__ = 'January 2015' | ||
| __copyright__ = '(C) 2015, Giovanni Manghi' | ||
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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 processing.core.parameters import ParameterVector | ||
| from processing.core.parameters import ParameterString | ||
| from processing.core.parameters import ParameterBoolean | ||
| from processing.core.parameters import ParameterTableField | ||
| from processing.core.parameters import ParameterSelection | ||
| from processing.core.outputs import OutputVector | ||
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| from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm | ||
| from processing.algs.gdal.GdalUtils import GdalUtils | ||
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| from processing.tools import dataobjects | ||
| from processing.tools.system import isWindows | ||
| from processing.tools.vector import ogrConnectionString, ogrLayerName | ||
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| class OffsetCurve(GdalAlgorithm): | ||
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| OUTPUT_LAYER = 'OUTPUT_LAYER' | ||
| INPUT_LAYER = 'INPUT_LAYER' | ||
| GEOMETRY = 'GEOMETRY' | ||
| RADIUS = 'RADIUS' | ||
| LEFTRIGHT = 'LEFTRIGHT' | ||
| LEFTRIGHTLIST = ['Right', 'Left'] | ||
| DISSOLVEALL = 'DISSOLVEALL' | ||
| FIELD = 'FIELD' | ||
| MULTI = 'MULTI' | ||
| OPTIONS = 'OPTIONS' | ||
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| def defineCharacteristics(self): | ||
| self.name, self.i18n_name = self.trAlgorithm('Offset lines for lines') | ||
| self.group, self.i18n_group = self.trAlgorithm('[OGR] Geoprocessing') | ||
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| self.addParameter(ParameterVector(self.INPUT_LAYER, | ||
| self.tr('Input layer'), [dataobjects.TYPE_VECTOR_LINE], False)) | ||
| self.addParameter(ParameterString(self.GEOMETRY, | ||
| self.tr('Geometry column name ("geometry" for Shapefiles, may be different for other formats)'), | ||
| 'geometry', optional=False)) | ||
| self.addParameter(ParameterString(self.RADIUS, | ||
| self.tr('Offset distance'), '1000', optional=False)) | ||
| self.addParameter(ParameterSelection(self.LEFTRIGHT, | ||
| self.tr('Offset side'), self.LEFTRIGHTLIST, 0)) | ||
| self.addParameter(ParameterBoolean(self.DISSOLVEALL, | ||
| self.tr('Dissolve all results'), False)) | ||
| self.addParameter(ParameterTableField(self.FIELD, | ||
| self.tr('Dissolve by attribute'), self.INPUT_LAYER, optional=True)) | ||
| self.addParameter(ParameterBoolean(self.MULTI, | ||
| self.tr('Output as singlepart geometries (only used when dissolving by attribute)'), False)) | ||
| self.addParameter(ParameterString(self.OPTIONS, | ||
| self.tr('Additional creation options (see ogr2ogr manual)'), | ||
| '', optional=True)) | ||
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| self.addOutput(OutputVector(self.OUTPUT_LAYER, self.tr('Offset line'))) | ||
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| def getConsoleCommands(self): | ||
| inLayer = self.getParameterValue(self.INPUT_LAYER) | ||
| geometry = self.getParameterValue(self.GEOMETRY) | ||
| distance = self.getParameterValue(self.RADIUS) | ||
| leftright = self.getParameterValue(self.LEFTRIGHT) | ||
| dissolveall = self.getParameterValue(self.DISSOLVEALL) | ||
| field = self.getParameterValue(self.FIELD) | ||
| multi = self.getParameterValue(self.MULTI) | ||
| options = self.getParameterValue(self.OPTIONS) | ||
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| ogrLayer = ogrConnectionString(inLayer)[1:-1] | ||
| layername = "'" + ogrLayerName(inLayer) + "'" | ||
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| output = self.getOutputFromName(self.OUTPUT_LAYER) | ||
| outFile = output.value | ||
| output = ogrConnectionString(outFile) | ||
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| layername = ogrLayerName(inLayer) | ||
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| arguments = [] | ||
| arguments.append(output) | ||
| arguments.append(ogrLayer) | ||
| arguments.append(layername) | ||
| arguments.append('-dialect') | ||
| arguments.append('sqlite') | ||
| arguments.append('-sql') | ||
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| if dissolveall or field is not None: | ||
| sql = "SELECT ST_Union(ST_OffsetCurve({}, {}, {})) * FROM '{}'".format(geometry, distance, leftright, layername) | ||
| else: | ||
| sql = "SELECT ST_OffsetCurve({}, {}, {}), * FROM '{}'".format(geometry, distance, leftright, layername) | ||
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| if field is not None: | ||
| sql = '"{} GROUP BY {}"'.format(sql, field) | ||
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| arguments.append(sql) | ||
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| if field is not None and multi: | ||
| arguments.append('-explodecollections') | ||
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| if len(options) > 0: | ||
| arguments.append(options) | ||
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| commands = [] | ||
| if isWindows(): | ||
| commands = ['cmd.exe', '/C ', 'ogr2ogr.exe', | ||
| GdalUtils.escapeAndJoin(arguments)] | ||
| else: | ||
| commands = ['ogr2ogr', GdalUtils.escapeAndJoin(arguments)] | ||
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| return commands | ||
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| def commandName(self): | ||
| return 'ogr2ogr' |
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