mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
82 lines
3.2 KiB
Python
82 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
FixedDistanceBuffer.py
|
|
---------------------
|
|
Date : August 2012
|
|
Copyright : (C) 2012 by Victor Olaya
|
|
Email : volayaf 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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Victor Olaya'
|
|
__date__ = 'August 2012'
|
|
__copyright__ = '(C) 2012, Victor Olaya'
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
__revision__ = '$Format:%H$'
|
|
|
|
import os.path
|
|
|
|
from PyQt4 import QtGui
|
|
from PyQt4.QtCore import *
|
|
|
|
from qgis.core import *
|
|
|
|
from sextante.core.GeoAlgorithm import GeoAlgorithm
|
|
from sextante.core.QGisLayers import QGisLayers
|
|
|
|
from sextante.parameters.ParameterVector import ParameterVector
|
|
from sextante.parameters.ParameterBoolean import ParameterBoolean
|
|
from sextante.parameters.ParameterNumber import ParameterNumber
|
|
|
|
from sextante.outputs.OutputVector import OutputVector
|
|
|
|
from sextante.ftools import Buffer as buff
|
|
|
|
class FixedDistanceBuffer(GeoAlgorithm):
|
|
|
|
INPUT = "INPUT"
|
|
OUTPUT = "OUTPUT"
|
|
FIELD = "FIELD"
|
|
USE_SELECTED = "USE_SELECTED"
|
|
DISTANCE = "DISTANCE"
|
|
SEGMENTS = "SEGMENTS"
|
|
DISSOLVE = "DISSOLVE"
|
|
|
|
def getIcon(self):
|
|
return QtGui.QIcon(os.path.dirname(__file__) + "/icons/buffer.png")
|
|
|
|
def defineCharacteristics(self):
|
|
self.name = "Fixed distance buffer"
|
|
self.group = "Geoprocessing tools"
|
|
|
|
self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
|
|
self.addParameter(ParameterBoolean(self.USE_SELECTED, "Use selected features", False))
|
|
self.addParameter(ParameterNumber(self.DISTANCE, "Distance", 0.0, default=10.0))
|
|
self.addParameter(ParameterNumber(self.SEGMENTS, "Segments", 1, default=5))
|
|
self.addParameter(ParameterBoolean(self.DISSOLVE, "Dissolve result", False))
|
|
|
|
self.addOutput(OutputVector(self.OUTPUT, "Buffer"))
|
|
|
|
def processAlgorithm(self, progress):
|
|
layer = QGisLayers.getObjectFromUri(self.getParameterValue(self.INPUT))
|
|
useSelection = self.getParameterValue(self.USE_SELECTED)
|
|
distance = self.getParameterValue(self.DISTANCE)
|
|
dissolve = self.getParameterValue(self.DISSOLVE)
|
|
segments = int(self.getParameterValue(self.SEGMENTS))
|
|
|
|
provider = layer.dataProvider()
|
|
writer = self.getOutputFromName(self.OUTPUT).getVectorWriter(layer.pendingFields(),
|
|
QGis.WKBPolygon, provider.crs())
|
|
|
|
buff.buffering(progress, writer, distance, None, useSelection, False,
|
|
layer, dissolve, segments)
|