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# -*- coding: utf-8 -*- | ||
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""" | ||
*************************************************************************** | ||
ReprojectLayer.py | ||
--------------------- | ||
Date : October 2012 | ||
Copyright : (C) 2012 by Alexander Bruy | ||
Email : alexander dot bruy at gmail dot com | ||
*************************************************************************** | ||
* * | ||
* 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__ = 'Alexander Bruy' | ||
__date__ = 'October 2012' | ||
__copyright__ = '(C) 2012, Alexander Bruy' | ||
# This will get replaced with a git SHA1 when you do a git archive | ||
__revision__ = '$Format:%H$' | ||
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import os.path | ||
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from PyQt4 import QtGui | ||
from PyQt4.QtCore import * | ||
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from qgis.core import * | ||
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from sextante.core.GeoAlgorithm import GeoAlgorithm | ||
from sextante.core.QGisLayers import QGisLayers | ||
from sextante.core.SextanteLog import SextanteLog | ||
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from sextante.parameters.ParameterVector import ParameterVector | ||
from sextante.parameters.ParameterCrs import ParameterCrs | ||
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from sextante.outputs.OutputVector import OutputVector | ||
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class ReprojectLayer(GeoAlgorithm): | ||
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INPUT = "INPUT" | ||
TARGET_CRS = "TARGET_CRS" | ||
OUTPUT = "OUTPUT" | ||
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def getIcon(self): | ||
return QtGui.QIcon(os.path.dirname(__file__) + "/icons/reproject.png") | ||
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def defineCharacteristics(self): | ||
self.name = "Reproject layer" | ||
self.group = "Data management tools" | ||
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self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY)) | ||
self.addParameter(ParameterCrs(self.TARGET_CRS, "Target CRS", "4326")) | ||
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self.addOutput(OutputVector(self.OUTPUT, "Reprojected layer")) | ||
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def processAlgorithm(self, progress): | ||
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT)) | ||
crsId = self.getParameterValue(self.TARGET_CRS) | ||
targetCrs = QgsCoordinateReferenceSystem(int(crsId)) | ||
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output = self.getOutputValue(self.OUTPUT) | ||
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writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(), | ||
layer.wkbType(), targetCrs) | ||
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layer.select(layer.pendingAllAttributesList()) | ||
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current = 0 | ||
total = 100.0 / float(layer.featureCount()) | ||
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layerCrs = layer.crs() | ||
crsTransform = QgsCoordinateTransform(layerCrs, targetCrs) | ||
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f = QgsFeature() | ||
outFeat = QgsFeature() | ||
while layer.nextFeature(f): | ||
geom = f.geometry() | ||
geom.transform(crsTransform) | ||
outFeat.setGeometry(geom) | ||
outFeat.setAttributeMap(f.attributeMap()) | ||
writer.addFeature(outFeat) | ||
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current += 1 | ||
progress.setPercentage(int(current * total)) | ||
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del writer |
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