QGIS/python/plugins/processing/lidar/lastools/lasthin.py

# -*- coding: utf-8 -*-

"""
***************************************************************************
    lasthin.py
    ---------------------
    Date                 : September 2013
    Copyright            : (C) 2013 by Martin Isenburg
    Email                : martin near rapidlasso point 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__ = 'Martin Isenburg'
__date__ = 'September 2013'
__copyright__ = '(C) 2013, Martin Isenburg'

# This will get replaced with a git SHA1 when you do a git archive

__revision__ = '$Format:%H$'

import os
from processing.lidar.lastools.LAStoolsUtils import LAStoolsUtils
from processing.lidar.lastools.LAStoolsAlgorithm import LAStoolsAlgorithm

from processing.parameters.ParameterBoolean import ParameterBoolean
from processing.parameters.ParameterNumber import ParameterNumber
from processing.parameters.ParameterSelection import ParameterSelection


class lasthin(LAStoolsAlgorithm):

    THIN_STEP = 'THIN_STEP'
    OPERATION = 'OPERATION'
    OPERATIONS = ['lowest', 'random', 'highest']
    WITHHELD = 'WITHHELD'

    def defineCharacteristics(self):
        self.name = 'lasthin'
        self.group = 'LAStools'
        self.addParametersVerboseGUI()
        self.addParametersPointInputGUI()
        self.addParameter(ParameterNumber(lasthin.THIN_STEP,
                          'size of grid used for thinning', 0, None, 1.0))
        self.addParameter(ParameterSelection(lasthin.OPERATION,
                          'keep particular point per cell',
                          lasthin.OPERATIONS, 0))
        self.addParameter(ParameterBoolean(lasthin.WITHHELD,
                          'mark points as withheld', False))
        self.addParametersPointOutputGUI()

    def processAlgorithm(self, progress):
        commands = [os.path.join(LAStoolsUtils.LAStoolsPath(), 'bin',
                    'lasthin.exe')]
        self.addParametersVerboseCommands(commands)
        self.addParametersPointInputCommands(commands)
        step = self.getParameterValue(lasthin.THIN_STEP)
        if step != 0.0:
            commands.append('-step')
            commands.append(str(step))
        operation = self.getParameterValue(lasthin.OPERATION)
        if operation != 0:
            commands.append('-' + OPERATIONS[operation])
        if self.getParameterValue(lasthin.WITHHELD):
            commands.append('-withheld')
        self.addParametersPointOutputCommands(commands)

        LAStoolsUtils.runLAStools(commands, progress)