# -*- coding: utf-8 -*-
#  This software and supporting documentation are distributed by
#      Institut Federatif de Recherche 49
#      CEA/NeuroSpin, Batiment 145,
#      91191 Gif-sur-Yvette cedex
#      France
#
# This software is governed by the CeCILL license version 2 under
# French law and abiding by the rules of distribution of free software.
# You can  use, modify and/or redistribute the software under the 
# terms of the CeCILL license version 2 as circulated by CEA, CNRS
# and INRIA at the following URL "http://www.cecill.info". 
#
# As a counterpart to the access to the source code and  rights to copy,
# modify and redistribute granted by the license, users are provided only
# with a limited warranty  and the software's author,  the holder of the
# economic rights,  and the successive licensors  have only  limited
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# software by the user in light of its specific status of free software,
# that may mean  that it is complicated to manipulate,  and  that  also
# therefore means  that it is reserved for developers  and  experienced
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# same conditions as regards security.
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from brainvisa.processes import *
import shfjGlobals

name = 'Linear Combination'
userLevel=1

signature = Signature(
  #Modif � faire pour fusionner aussi des textures --> gestions format image et texture
  #'read1', ReadDiskItem(  'Texture', ('Texture',)+ shfjGlobals.anatomistVolumeFormats),
  'read1', ReadDiskItem(  '3D Volume', shfjGlobals.anatomistVolumeFormats),
  'multiplicative_coefficient1', Float(),
  'divisor_coefficient1', Float(),
  
  #Modif � faire pour fusionner aussi des textures --> gestions format image et texture
  #'read2', ReadDiskItem(  'Texture', ('Texture',)+ shfjGlobals.anatomistVolumeFormats),
  'read2', ReadDiskItem(  '3D Volume', shfjGlobals.anatomistVolumeFormats),
  
  'multiplicative_coefficient2', Float(),
  'divisor_coefficient2', Float(),
  'constant', Integer(),
  
  #Modif � faire pour fusionner aussi des textures --> gestions format image et texture
  #'write', WriteDiskItem(  'Texture', ('Texture',)+ shfjGlobals.anatomistVolumeFormats),
  'write', WriteDiskItem(  '3D Volume', shfjGlobals.anatomistVolumeFormats),
  'type', Choice( ( '<Same as input>', None), 'U8', 'S8', 'U16', 'S16', 'U32', 'S32', 'FLOAT', 'DOUBLE' ),  
)

def initialization( self ):
  self.setOptional('multiplicative_coefficient1', 'divisor_coefficient1', 'read2', 'multiplicative_coefficient2', 'divisor_coefficient2', 'constant', 'type')
  self.multiplicative_coefficient1=1
  self.multiplicative_coefficient2=1
  self.divisor_coefficient1=1
  self.divisor_coefficient2=1
  self.constant=0
  self.type = None

def execution( self, context ):
  command = [ 'AimsLinearComb', '-i', self.read1, '-o', self.write]
  
  if self.multiplicative_coefficient1 is not None :
    command += [ '-a', self.multiplicative_coefficient1 ]
    
  if self.divisor_coefficient1  is not None :
    command += [ '-b', self.divisor_coefficient1 ]
  
  if self.read2 is not None :
    command += [ '-j', self.read2 ]
    
    if self.multiplicative_coefficient2  is not None :
      command += [ '-c', self.multiplicative_coefficient2 ]
      
    if self.divisor_coefficient2  is not None :
      command += [ '-d', self.divisor_coefficient2 ]
    
  if self.constant :
    command += [ '-e', self.constant ]
    
  if self.type is not None:
    command += [ '-t', self.type ]

  apply( context.system, command )