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- """
- ***************************************************************************
- r_rgb.py
- --------
- Date : February 2016
- Copyright : (C) 2016 by Médéric Ribreux
- Email : medspx at medspx dot 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. *
- * *
- ***************************************************************************
- """
- __author__ = 'Médéric Ribreux'
- __date__ = 'February 2016'
- __copyright__ = '(C) 2016, Médéric Ribreux'
- def processInputs(alg, parameters, context, feedback):
- if 'input' in alg.exportedLayers:
- return
- # We need to import all the bands and color tables of the input raster
- alg.loadRasterLayerFromParameter('input', parameters, context, False, None)
- alg.postInputs(context)
- def processCommand(alg, parameters, context, feedback):
- # if the input raster is multiband: export each component directly
- rasterInput = alg.exportedLayers['input']
- raster = alg.parameterAsRasterLayer(parameters, 'input', context)
- for color in ['red', 'green', 'blue']:
- alg.exportedLayers[color] = color + alg.uniqueSuffix
- # If the raster is not multiband, really do r.rgb
- if raster.bandCount() == 1:
- alg.commands.append(" r.rgb input={} red={} green={} blue={} --overwrite".format(
- rasterInput,
- alg.exportedLayers['red'],
- alg.exportedLayers['green'],
- alg.exportedLayers['blue']
- ))
- def processOutputs(alg, parameters, context, feedback):
- raster = alg.parameterAsRasterLayer(parameters, 'input', context)
- # if the raster was monoband, export from r.rgb
- for color in ['red', 'green', 'blue']:
- fileName = alg.parameterAsOutputLayer(parameters, color, context)
- if raster.bandCount() == 1:
- grassName = '{}{}'.format(color, alg.uniqueSuffix)
- else:
- grassName = '{}.{}'.format(alg.exportedLayers['input'], color)
- alg.exportRasterLayer(grassName, fileName, True)
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