/
terre_image_task.py
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/
terre_image_task.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
QGISEducation
A QGIS plugin
QGISEducation
-------------------
begin : 2014-05-20
copyright : (C) 2014 by CNES
email : alexia.mondot@c-s.fr
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
import manage_QGIS
from working_layer import WorkingLayer
import terre_image_processing
from processing_manager import ProcessingManager
import OTBApplications
from qgis.core import QGis, QgsMapLayerRegistry
from qgis.gui import QgsRubberBand
from PyQt4.QtGui import QColor
from PyQt4.QtCore import QObject, SIGNAL, Qt
# import loggin for debug messages
import logging
logging.basicConfig()
# create logger
logger = logging.getLogger('TerreImage_task')
logger.setLevel(logging.INFO)
class TerreImageTask(object):
def __init__(self, iface, working_dir, layer, mirror_map_tool):
self.iface = iface
self.canvas = self.iface.mapCanvas()
self.working_directory = working_dir
self.layer = layer
self.mirrormap_tool = mirror_map_tool
self.histogram = None
self.output_working_layer = None
self.mirror = None
def freezeCanvas(self, setFreeze):
if setFreeze:
if not self.iface.mapCanvas().isFrozen():
self.iface.mapCanvas().freeze(True)
else:
if self.iface.mapCanvas().isFrozen():
self.iface.mapCanvas().freeze(False)
self.iface.mapCanvas().refresh()
def end(self):
if self.mirror:
if self.mirror in self.mirrormap_tool.dockableMirrors:
self.mirrormap_tool.dockableMirrors.remove(self.mirror)
class TerreImageProcessing(TerreImageTask, QObject):
__pyqtSignals__ = ("display_ok()")
def __init__(self, iface, working_dir, layer, mirror_map_tool, processing, arg=None, rlayer=None):
"""
processing_type : [processing/display]
"""
super(TerreImageProcessing, self).__init__(iface, working_dir, layer, mirror_map_tool)
QObject.__init__(self)
self.processing_name = processing
self.mirror = None
self.rubberband = None
self.angle_tool = None
self.r_layer = rlayer
self.arg = None
# print "arg", arg
if arg:
# print processing, "gave ", arg
self.arg = arg
self.run()
def __str__(self):
message = self.processing_name
if self.output_working_layer.source_file:
message += " : \t status ok \t image resultante :" + self.output_working_layer.source_file
message += "\t mirror:" + str(self.mirror)
return message
def run(self):
logger.debug("run, processing name" + str(self.processing_name))
logger.debug("self.arg" + str(self.arg))
output_filename = ""
if "NDVI" in self.processing_name:
output_filename = terre_image_processing.ndvi(self.layer, self.working_directory, self.iface)
if "NDTI" in self.processing_name:
output_filename = terre_image_processing.ndti(self.layer, self.working_directory, self.iface)
if "Indice de brillance" in self.processing_name:
output_filename = terre_image_processing.brightness(self.layer, self.working_directory, self.iface)
if "Angle Spectral" in self.processing_name:
self.rubberband = QgsRubberBand(self.canvas, QGis.Point)
self.rubberband.setWidth(10)
self.rubberband.setColor(QColor(Qt.yellow))
if not self.arg:
from spectral_angle import SpectralAngle
self.angle_tool = SpectralAngle(self.iface, self.working_directory, self.layer, self.mirrormap_tool, self.rubberband)
logger.debug("self.angle_tool" + str(self.angle_tool))
QObject.connect(self.angle_tool, SIGNAL("anglesComputed(PyQt_PyObject)"), self.display)
self.angle_tool.get_point_for_angles(self.layer)
# spectral_angles(self.layer, self.working_directory, self.iface)
else:
output_filename = self.arg
if "KMEANS" in self.processing_name:
if self.arg:
output_filename = terre_image_processing.kmeans(self.layer, self.working_directory, self.iface, self.arg)
else:
output_filename = terre_image_processing.kmeans(self.layer, self.working_directory, self.iface)
if "Seuillage" in self.processing_name and self.arg:
logger.debug("this is thrshold")
output_filename = terre_image_processing.threshold(self.layer, self.working_directory, self.arg)
if output_filename:
OTBApplications.compute_overviews(output_filename)
logger.debug(output_filename)
self.display(output_filename)
def get_filename_result(self):
return self.output_working_layer.source_file
def get_output_working_layer(self):
if not isinstance(self.output_working_layer, WorkingLayer):
# look for the file in the layers
logger.debug(self.processing_name)
raster_layers = manage_QGIS.get_raster_layers()
for layer in raster_layers:
if self.processing_name in layer.name:
self.output_working_layer.qgis_layer = layer
break
else:
return self.output_working_layer
def display(self, output_filename):
# if "Angle Spectral" in self.processing_name:
# print self.rubberband
# print self.rubberband.getPoint(0)
self.freezeCanvas(True)
# result_layer = manage_QGIS.get_raster_layer( output_filename,
# os.path.basename(os.path.splitext(self.layer.source_file)[0]) + "_" + self.processing_name )
if self.r_layer:
result_layer = self.r_layer
else:
result_layer = manage_QGIS.addRasterLayerToQGIS(output_filename, self.processing_name, self.iface)
self.r_layer = result_layer
if self.processing_name == "Seuillage":
manage_QGIS.histogram_stretching_for_threshold(result_layer, self.iface.mapCanvas())
else:
manage_QGIS.histogram_stretching(result_layer, self.iface.mapCanvas())
logger.debug("defining self.output_working_layer")
self.output_working_layer = WorkingLayer(output_filename, result_layer)
# 2 ouvrir une nouvelle vue
self.mirror = self.mirrormap_tool.runDockableMirror(self.processing_name)
logger.debug(self.mirror)
self.mirror.mainWidget.addLayer(result_layer.id())
self.mirror.mainWidget.onExtentsChanged()
# 1 mettre image en queue
iface_legend = self.iface.legendInterface()
iface_layers = QgsMapLayerRegistry.instance().mapLayers()
logger.debug("ifacelayers" + str(iface_layers))
id_layer = result_layer.id()
logger.debug("id_layer" + str(id_layer))
logger.debug("result layer" + str(result_layer))
# QgsMapLayerRegistry.instance().mapLayers()
# {u'QB_1_ortho20140521141641682': <qgis.core.QgsRasterLayer object at 0x6592b00>,
# u'QB_1_ortho_bande_bleue20140521141927295': <qgis.core.QgsRasterLayer object at 0x6592950>}
iface_legend.setLayerVisible(result_layer, False)
self.iface.mapCanvas().refresh()
logger.debug(iface_legend.isLayerVisible(result_layer))
ProcessingManager().add_processing(self)
self.emit(SIGNAL("display_ok()"))
logger.debug("signal emitted")
# thaw the canvas
self.freezeCanvas(False)
class TerreImageDisplay(TerreImageTask):
def __init__(self, iface, working_dir, layer, mirror_map_tool, who, arg=None, rlayer=None):
"""
processing_type : [processing/display]
"""
super(TerreImageDisplay, self).__init__(iface, working_dir, layer, mirror_map_tool)
self.corres = {'nat': "Couleurs naturelles", 'red': "Bande rouge", 'green': "Bande verte",
'blue': "Bande bleue", 'pir': "Bande pir", 'mir': "Bande mir"}
self.who = who
self.processing_name = self.corres[who]
self.mirror = None
self.arg = None
if arg:
self.arg = arg
self.r_layer = rlayer
self.run()
def run(self):
self.freezeCanvas(True)
logger.debug("self.who" + str(self.who))
if not self.r_layer:
result_layer = manage_QGIS.display_one_band(self.layer, self.who, self.iface)
else:
result_layer = self.r_layer
if result_layer:
self.output_working_layer = WorkingLayer(self.layer.source_file, result_layer)
self.mirror = self.mirrormap_tool.runDockableMirror(self.processing_name)
logger.debug(self.mirror)
self.mirror.mainWidget.addLayer(result_layer.id())
self.mirror.mainWidget.onExtentsChanged()
iface_legend = self.iface.legendInterface()
iface_layers = QgsMapLayerRegistry.instance().mapLayers()
logger.debug("ifacelayers" + str(iface_layers))
# id_layer = result_layer.id()
# logger.debug( "id_layer" + str( id_layer ))
# logger.debug( "result layer" + str( result_layer ))
# QgsMapLayerRegistry.instance().mapLayers()
# {u'QB_1_ortho20140521141641682': <qgis.core.QgsRasterLayer object at 0x6592b00>,
# u'QB_1_ortho_bande_bleue20140521141927295': <qgis.core.QgsRasterLayer object at 0x6592950>}
iface_legend.setLayerVisible(result_layer, False)
self.iface.mapCanvas().refresh()
logger.debug(iface_legend.isLayerVisible(result_layer))
ProcessingManager().add_display(self)
# thaw the canvas
self.freezeCanvas(False)
def __str__(self):
"""
Implements str method for debbuging
"""
message = self.processing_name
if self.output_working_layer.source_file:
message += "\t mirror:" + str(self.mirror)
return message