mirror of
https://github.com/qgis/QGIS.git
synced 2025-03-04 00:30:59 -05:00
98 lines
3.9 KiB
Python
98 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
DeleteHoles.py
|
|
---------------------
|
|
Date : April 2015
|
|
Copyright : (C) 2015 by Etienne Trimaille
|
|
***************************************************************************
|
|
* *
|
|
* 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__ = 'Etienne Trimaille'
|
|
__date__ = 'April 2015'
|
|
__copyright__ = '(C) 2015, Etienne Trimaille'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from qgis.core import (QgsApplication,
|
|
QgsFeatureSink,
|
|
QgsProcessingUtils,
|
|
QgsProcessingParameterFeatureSource,
|
|
QgsProcessingParameterNumber,
|
|
QgsProcessingParameterFeatureSink,
|
|
QgsProcessingOutputVectorLayer,
|
|
QgsProcessingParameterDefinition)
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
|
|
|
|
class DeleteHoles(QgisAlgorithm):
|
|
|
|
INPUT = 'INPUT'
|
|
MIN_AREA = 'MIN_AREA'
|
|
OUTPUT = 'OUTPUT'
|
|
|
|
def tags(self):
|
|
return self.tr('remove,delete,drop,holes,rings,fill').split(',')
|
|
|
|
def group(self):
|
|
return self.tr('Vector geometry tools')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.addParameter(QgsProcessingParameterFeatureSource(self.INPUT,
|
|
self.tr('Input layer'), [QgsProcessingParameterDefinition.TypeVectorPolygon]))
|
|
self.addParameter(QgsProcessingParameterNumber(self.MIN_AREA,
|
|
self.tr('Remove holes with area less than'), QgsProcessingParameterNumber.Double,
|
|
0, True, 0.0, 10000000.0))
|
|
|
|
self.addParameter(QgsProcessingParameterFeatureSink(self.OUTPUT, self.tr('Cleaned'), QgsProcessingParameterDefinition.TypeVectorPolygon))
|
|
self.addOutput(QgsProcessingOutputVectorLayer(self.OUTPUT, self.tr('Cleaned'), QgsProcessingParameterDefinition.TypeVectorPolygon))
|
|
|
|
self.source = None
|
|
self.min_area = None
|
|
self.sink = None
|
|
self.dest_id = None
|
|
|
|
def name(self):
|
|
return 'deleteholes'
|
|
|
|
def displayName(self):
|
|
return self.tr('Delete holes')
|
|
|
|
def prepareAlgorithm(self, parameters, context, feedback):
|
|
self.source = self.parameterAsSource(parameters, self.INPUT, context)
|
|
self.min_area = self.parameterAsDouble(parameters, self.MIN_AREA, context)
|
|
if self.min_area == 0.0:
|
|
self.min_area = -1.0
|
|
|
|
(self.sink, self.dest_id) = self.parameterAsSink(parameters, self.OUTPUT, context,
|
|
self.source.fields(), self.source.wkbType(), self.source.sourceCrs())
|
|
return True
|
|
|
|
def processAlgorithm(self, context, feedback):
|
|
features = self.source.getFeatures()
|
|
total = 100.0 / self.source.featureCount() if self.source.featureCount() else 0
|
|
|
|
for current, f in enumerate(features):
|
|
if feedback.isCanceled():
|
|
break
|
|
|
|
if f.hasGeometry():
|
|
f.setGeometry(f.geometry().removeInteriorRings(self.min_area))
|
|
self.sink.addFeature(f, QgsFeatureSink.FastInsert)
|
|
feedback.setProgress(int(current * total))
|
|
return True
|
|
|
|
def postProcessAlgorithm(self, context, feedback):
|
|
return {self.OUTPUT: self.dest_id}
|