mirror of
https://github.com/qgis/QGIS.git
synced 2025-10-31 00:06:02 -04:00
9ca57bd62c
Instead of just forcing writing the triangulation to a shapefile (boo!) change the parameter to use a QgsFeatureSink, so that anything which implements the QgsFeatureSink interface can be used for storing the triangulation.
216 lines
9.1 KiB
Python
216 lines
9.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
TinInterpolation.py
|
|
---------------------
|
|
Date : October 2016
|
|
Copyright : (C) 2016 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. *
|
|
* *
|
|
***************************************************************************
|
|
"""
|
|
|
|
__author__ = 'Alexander Bruy'
|
|
__date__ = 'October 2016'
|
|
__copyright__ = '(C) 2016, Alexander Bruy'
|
|
|
|
# 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 (QgsProcessingUtils,
|
|
QgsProcessing,
|
|
QgsProcessingParameterDefinition,
|
|
QgsProcessingParameterEnum,
|
|
QgsProcessingParameterNumber,
|
|
QgsProcessingParameterExtent,
|
|
QgsProcessingParameterRasterDestination,
|
|
QgsWkbTypes,
|
|
QgsProcessingParameterFeatureSink,
|
|
QgsProcessingException,
|
|
QgsCoordinateReferenceSystem)
|
|
from qgis.analysis import (QgsInterpolator,
|
|
QgsTINInterpolator,
|
|
QgsGridFileWriter)
|
|
|
|
from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
|
|
|
|
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
|
|
|
|
|
|
class ParameterInterpolationData(QgsProcessingParameterDefinition):
|
|
|
|
def __init__(self, name='', description=''):
|
|
super().__init__(name, description)
|
|
self.setMetadata({
|
|
'widget_wrapper': 'processing.algs.qgis.ui.InterpolationDataWidget.InterpolationDataWidgetWrapper'
|
|
})
|
|
|
|
def type(self):
|
|
return 'tin_interpolation_data'
|
|
|
|
def clone(self):
|
|
return ParameterInterpolationData(self.name(), self.description())
|
|
|
|
@staticmethod
|
|
def parseValue(value):
|
|
if value is None:
|
|
return None
|
|
|
|
if value == '':
|
|
return None
|
|
|
|
if isinstance(value, str):
|
|
return value if value != '' else None
|
|
else:
|
|
return ParameterInterpolationData.dataToString(value)
|
|
|
|
@staticmethod
|
|
def dataToString(data):
|
|
s = ''
|
|
for c in data:
|
|
s += '{}, {}, {:d}, {:d};'.format(c[0],
|
|
c[1],
|
|
c[2],
|
|
c[3])
|
|
return s[:-1]
|
|
|
|
|
|
class TinInterpolation(QgisAlgorithm):
|
|
INTERPOLATION_DATA = 'INTERPOLATION_DATA'
|
|
METHOD = 'METHOD'
|
|
COLUMNS = 'COLUMNS'
|
|
ROWS = 'ROWS'
|
|
CELLSIZE_X = 'CELLSIZE_X'
|
|
CELLSIZE_Y = 'CELLSIZE_Y'
|
|
EXTENT = 'EXTENT'
|
|
OUTPUT = 'OUTPUT'
|
|
TRIANGULATION = 'TRIANGULATION'
|
|
|
|
def icon(self):
|
|
return QIcon(os.path.join(pluginPath, 'images', 'interpolation.png'))
|
|
|
|
def group(self):
|
|
return self.tr('Interpolation')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
|
|
def initAlgorithm(self, config=None):
|
|
self.METHODS = [self.tr('Linear'),
|
|
self.tr('Clough-Toucher (cubic)')
|
|
]
|
|
|
|
self.addParameter(ParameterInterpolationData(self.INTERPOLATION_DATA,
|
|
self.tr('Input layer(s)')))
|
|
self.addParameter(QgsProcessingParameterEnum(self.METHOD,
|
|
self.tr('Interpolation method'),
|
|
options=self.METHODS,
|
|
defaultValue=0))
|
|
self.addParameter(QgsProcessingParameterNumber(self.COLUMNS,
|
|
self.tr('Number of columns'),
|
|
minValue=0, maxValue=10000000, defaultValue=300))
|
|
self.addParameter(QgsProcessingParameterNumber(self.ROWS,
|
|
self.tr('Number of rows'),
|
|
minValue=0, maxValue=10000000, defaultValue=300))
|
|
self.addParameter(QgsProcessingParameterNumber(self.CELLSIZE_X,
|
|
self.tr('Cell size X'), type=QgsProcessingParameterNumber.Double,
|
|
minValue=0.0, maxValue=999999.000000, defaultValue=0.0))
|
|
self.addParameter(QgsProcessingParameterNumber(self.CELLSIZE_Y,
|
|
self.tr('Cell size Y'), type=QgsProcessingParameterNumber.Double,
|
|
minValue=0.0, maxValue=999999.000000, defaultValue=0.0))
|
|
self.addParameter(QgsProcessingParameterExtent(self.EXTENT,
|
|
self.tr('Extent'),
|
|
optional=False))
|
|
self.addParameter(QgsProcessingParameterRasterDestination(self.OUTPUT,
|
|
self.tr('Interpolated')))
|
|
|
|
triangulation_file_param = QgsProcessingParameterFeatureSink(self.TRIANGULATION,
|
|
self.tr('Triangulation'),
|
|
type=QgsProcessing.TypeVectorLine,
|
|
optional=True)
|
|
triangulation_file_param.setCreateByDefault(False)
|
|
self.addParameter(triangulation_file_param)
|
|
|
|
def name(self):
|
|
return 'tininterpolation'
|
|
|
|
def displayName(self):
|
|
return self.tr('TIN interpolation')
|
|
|
|
def processAlgorithm(self, parameters, context, feedback):
|
|
interpolationData = ParameterInterpolationData.parseValue(parameters[self.INTERPOLATION_DATA])
|
|
method = self.parameterAsEnum(parameters, self.METHOD, context)
|
|
columns = self.parameterAsInt(parameters, self.COLUMNS, context)
|
|
rows = self.parameterAsInt(parameters, self.ROWS, context)
|
|
cellsizeX = self.parameterAsDouble(parameters, self.CELLSIZE_X, context)
|
|
cellsizeY = self.parameterAsDouble(parameters, self.CELLSIZE_Y, context)
|
|
bbox = self.parameterAsExtent(parameters, self.EXTENT, context)
|
|
output = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
|
|
|
|
if interpolationData is None:
|
|
raise QgsProcessingException(
|
|
self.tr('You need to specify at least one input layer.'))
|
|
|
|
if cellsizeX == 0.0 or cellsizeY == 0.0:
|
|
raise QgsProcessingException(
|
|
self.tr('Cellsize should be greater than 0.'))
|
|
|
|
layerData = []
|
|
layers = []
|
|
crs = QgsCoordinateReferenceSystem()
|
|
for row in interpolationData.split(';'):
|
|
v = row.split(',')
|
|
data = QgsInterpolator.LayerData()
|
|
|
|
# need to keep a reference until interpolation is complete
|
|
layer = QgsProcessingUtils.mapLayerFromString(v[0], context)
|
|
data.vectorLayer = layer
|
|
layers.append(layer)
|
|
if not crs.isValid():
|
|
crs = layer.crs()
|
|
|
|
data.zCoordInterpolation = bool(v[1])
|
|
data.interpolationAttribute = int(v[2])
|
|
if v[3] == '0':
|
|
data.mInputType = QgsInterpolator.POINTS
|
|
elif v[3] == '1':
|
|
data.mInputType = QgsInterpolator.STRUCTURE_LINES
|
|
else:
|
|
data.mInputType = QgsInterpolator.BREAK_LINES
|
|
layerData.append(data)
|
|
|
|
if method == 0:
|
|
interpolationMethod = QgsTINInterpolator.Linear
|
|
else:
|
|
interpolationMethod = QgsTINInterpolator.CloughTocher
|
|
|
|
(triangulation_sink, triangulation_dest_id) = self.parameterAsSink(parameters, self.TRIANGULATION, context,
|
|
QgsTINInterpolator.triangulationFields(), QgsWkbTypes.LineString, crs)
|
|
|
|
interpolator = QgsTINInterpolator(layerData, interpolationMethod, feedback)
|
|
if triangulation_sink is not None:
|
|
interpolator.setTriangulationSink(triangulation_sink)
|
|
|
|
writer = QgsGridFileWriter(interpolator,
|
|
output,
|
|
bbox,
|
|
columns,
|
|
rows,
|
|
cellsizeX,
|
|
cellsizeY)
|
|
|
|
writer.writeFile(feedback)
|
|
return {self.OUTPUT: output, self.TRIANGULATION: triangulation_dest_id}
|