mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-28 00:17:30 -05:00
120 lines
4.9 KiB
Python
120 lines
4.9 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
|
|
|
|
from qgis.PyQt.QtGui import QIcon
|
|
|
|
from qgis.core import (QgsWkbTypes,
|
|
QgsProcessing,
|
|
QgsProcessingParameterFeatureSource,
|
|
QgsProcessingParameterNumber,
|
|
QgsProcessingParameterBoolean,
|
|
QgsProcessingParameterEnum,
|
|
QgsProcessingParameterFeatureSink)
|
|
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
|
|
from . import Buffer as buff
|
|
|
|
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
|
|
|
|
|
|
class FixedDistanceBuffer(QgisAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
OUTPUT = 'OUTPUT'
|
|
FIELD = 'FIELD'
|
|
DISTANCE = 'DISTANCE'
|
|
SEGMENTS = 'SEGMENTS'
|
|
DISSOLVE = 'DISSOLVE'
|
|
END_CAP_STYLE = 'END_CAP_STYLE'
|
|
JOIN_STYLE = 'JOIN_STYLE'
|
|
MITER_LIMIT = 'MITER_LIMIT'
|
|
|
|
def icon(self):
|
|
return QIcon(os.path.join(pluginPath, 'images', 'ftools', 'buffer.png'))
|
|
|
|
def group(self):
|
|
return self.tr('Vector geometry')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
def initAlgorithm(self, config=None):
|
|
self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
|
|
self.tr('Input layer')))
|
|
|
|
self.addParameter(QgsProcessingParameterNumber(self.DISTANCE,
|
|
self.tr('Distance'), defaultValue=10.0))
|
|
self.addParameter(QgsProcessingParameterNumber(self.SEGMENTS,
|
|
self.tr('Segments'), type=QgsProcessingParameterNumber.Integer, minValue=1, defaultValue=5))
|
|
self.addParameter(QgsProcessingParameterBoolean(self.DISSOLVE,
|
|
self.tr('Dissolve result'), defaultValue=False))
|
|
self.end_cap_styles = [self.tr('Round'),
|
|
'Flat',
|
|
'Square']
|
|
self.addParameter(QgsProcessingParameterEnum(
|
|
self.END_CAP_STYLE,
|
|
self.tr('End cap style'),
|
|
options=self.end_cap_styles, defaultValue=0))
|
|
self.join_styles = [self.tr('Round'),
|
|
'Miter',
|
|
'Bevel']
|
|
self.addParameter(QgsProcessingParameterEnum(
|
|
self.JOIN_STYLE,
|
|
self.tr('Join style'),
|
|
options=self.join_styles, defaultValue=0))
|
|
self.addParameter(QgsProcessingParameterNumber(self.MITER_LIMIT,
|
|
self.tr('Miter limit'), minValue=0, defaultValue=2))
|
|
|
|
self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Buffer'), QgsProcessing.TypeVectorPolygon))
|
|
|
|
def name(self):
|
|
return 'fixeddistancebuffer'
|
|
|
|
def displayName(self):
|
|
return self.tr('Fixed distance buffer')
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
source = self.parameterAsSource(parameters, self.INPUT, context)
|
|
|
|
distance = self.parameterAsDouble(parameters, self.DISTANCE, context)
|
|
dissolve = self.parameterAsBool(parameters, self.DISSOLVE, context)
|
|
segments = self.parameterAsInt(parameters, self.SEGMENTS, context)
|
|
end_cap_style = self.parameterAsEnum(parameters, self.END_CAP_STYLE, context) + 1
|
|
join_style = self.parameterAsEnum(parameters, self.JOIN_STYLE, context) + 1
|
|
miter_limit = self.parameterAsDouble(parameters, self.MITER_LIMIT, context)
|
|
|
|
(sink, dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
|
|
source.fields(), QgsWkbTypes.Polygon, source.sourceCrs())
|
|
|
|
buff.buffering(feedback, context, sink, distance, None, False, source, dissolve, segments, end_cap_style,
|
|
join_style, miter_limit)
|
|
|
|
return {self.OUTPUT: dest_id}
|