# -*- 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-B license 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-B license 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
# liability.
#
# In this respect, the user's attention is drawn to the risks associated
# with loading,  using,  modifying and/or developing or reproducing the
# 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
# professionals having in-depth computer knowledge. Users are therefore
# encouraged to load and test the software's suitability as regards their
# requirements in conditions enabling the security of their systems and/or 
# data to be ensured and,  more generally, to use and operate it in the 
# same conditions as regards security.
#
# The fact that you are presently reading this means that you have had
# knowledge of the CeCILL-B license and that you accept its terms.
import anatomist.cpp as anatomist
from soma import aims, aimsalgo
import numpy
import os, sys
import PyQt4.QtCore as qt
import PyQt4.QtGui as qtgui


class SplitFoldModule( anatomist.Module ):
  def name( self ):
    return 'SplitFold'

  def description(self):
    return 'Split a fold graph vertex in two on a click'


class SplitFoldAction( anatomist.Action ):
  def name( self ):
    return 'SplitFoldAction'

  def split( self, x, y, globx, globy ):
    self.cleanup()
    a = anatomist.Anatomist()
    v = self.view()
    w = v.aWindow()
    pos = aims.Point3df()
    ok = v.positionFromCursor( x, y, pos )
    if not ok:
      return
    vertex = self.findVertex( pos, w )
    if vertex is None:
      return
    ag = None
    try:
      ag = vertex[ 'agraph' ]
    except:
      obj = vertex[ 'ana_object' ]
      ps = obj.parents()
      for p in ps:
        if p.type() == anatomist.AObject.GRAPH:
          ag = p
          break
    if ag is None:
      print 'Vertex has no parent graph, strange. Aborting.'
      return
    g = ag.attributed()
    ag.loadSubObjects( 3 )
    fov = aims.FoldArgOverSegment( g )
    vs = g[ 'voxel_size' ]
    ro = ag.getReferential()
    rw = w.getReferential()
    tr = a.getTransformation( rw, ro )
    if tr is not None:
      pos = tr.transform( pos )
    posi = aims.Point3d( round( pos[0] / vs[0] ), round( pos[1] / vs[1] ),
      round( pos[2] / vs[2] ) )
    splitline = fov.findSplitLine( vertex, posi )
    if splitline:
      # show split line
      asplit = anatomist.AObjectConverter.anatomist( splitline )
      a.unmapObject( asplit )
      a.releaseObject( asplit )
      mat = asplit.GetMaterial()
      mat.set( { 'diffuse' : [ 0.6, 0., 0.8, 1. ] } )
      asplit.SetMaterial( mat )
      w.registerObject( asplit, True )

      self.temporary = { 'splitline' : splitline,
        'graph' : g,
        'vertex' : vertex,
        'tempobjects' : [ asplit ] }

  def subdivize( self, x, y, globx, globy ):
    self.cleanup()
    a = anatomist.Anatomist()
    v = self.view()
    w = v.aWindow()
    pos = aims.Point3df()
    ok = v.positionFromCursor( x, y, pos )
    if not ok:
      return
    vertex = self.findVertex( pos, w )
    if vertex is None:
      return
    ag = None
    try:
      ag = vertex[ 'agraph' ]
    except:
      obj = vertex[ 'ana_object' ]
      ps = obj.parents()
      for p in ps:
        if p.type() == anatomist.AObject.GRAPH:
          ag = p
          break
    if ag is None:
      print 'Vertex has no parent graph, strange. Aborting.'
      return
    g = ag.attributed()
    ag.loadSubObjects( 3 )
    fov = aims.FoldArgOverSegment( g )
    newvert = aims.set_VertexPtr()
    nv = fov.subdivizeVertex( vertex, 20, 50, newvert )
    for vertex in newvert:
      try:
        bk = vertex[ 'aims_ss_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      try:
        bk = vertex[ 'aims_bottom_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      try:
        bk = vertex[ 'aims_other_ana' ]
        bk.setInternalsChanged()
      except:
        pass
    ag.updateAfterAimsChange()
    for vertex in newvert:
      av = vertex[ 'ana_object' ]
      w.registerObject( av )
    ag.notifyObservers()

  def subdivizeGraph( self, x, y, globx, globy ):
    self.cleanup()
    a = anatomist.Anatomist()
    v = self.view()
    w = v.aWindow()
    obj = w.Objects()
    graphs = []
    ag = None
    for o in obj:
      if o.type() == anatomist.AObject.GRAPH:
        graphs.append( o )
    if len( graphs ) == 1:
      ag = graphs[0]
    elif len( graphs ) >= 2:
      sf = anatomist.SelectFactory.factory()
      gr2 = []
      for o in graphs:
        if sf.isSelected( w.Group(), o ):
          gr2.append( o )
      if len( gr2 ) == 1:
        ag = gr2[0]
      del gr2
    del obj
    if ag is None:
      pos = aims.Point3df()
      ok = v.positionFromCursor( x, y, pos )
      if not ok:
        return
      vertex = self.findVertex( pos, w )
      if vertex is None:
        return
      try:
        ag = vertex[ 'agraph' ]
      except:
        obj = vertex[ 'ana_object' ]
        ps = obj.parents()
        for p in ps:
          if p.type() == anatomist.AObject.GRAPH:
            ag = p
            break
      if ag is None:
        print 'Vertex has no parent graph, strange. Aborting.'
        return
    g = ag.attributed()
    ag.loadSubObjects( 3 )
    fov = aims.FoldArgOverSegment( g )
    newvert = aims.set_VertexPtr()
    nv = fov.subdivizeGraph( 20, 50, newvert )
    for vertex in newvert:
      try:
        bk = vertex[ 'aims_ss_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      try:
        bk = vertex[ 'aims_bottom_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      try:
        bk = vertex[ 'aims_other_ana' ]
        bk.setInternalsChanged()
      except:
        pass
    ag.updateAfterAimsChange()
    for vertex in newvert:
      av = vertex[ 'ana_object' ]
      w.registerObject( av )
    ag.notifyObservers()

  def cleanup( self ):
    if hasattr( self, 'temporary' ):
      del self.temporary

  def distanceToVertex( self, pos, vertex ):
    bck = []
    if vertex.has_key( 'aims_ss' ):
      bck.append( vertex[ 'aims_ss' ] )
    if vertex.has_key( 'aims_bottom' ):
      bck.append( vertex[ 'aims_bottom' ] )
    if vertex.has_key( 'aims_other' ):
      bck.append( vertex[ 'aims_other' ] )
    dmin = 1.e38
    pmin = None
    if len( bck ) != 0:
      vs = aims.Point3df( bck[0].sizeX(), bck[0].sizeY(), bck[0].sizeZ() )
      for bk in bck:
        for pt in bk[0].keys():
          d = ( aims.Point3df( pt[0] * vs[0], pt[1] * vs[1], pt[2] * vs[2] )\
                - pos ).norm2()
          if d < dmin:
            dmin = d
            pmin = pt
    return numpy.sqrt( dmin ), pmin

  def findVertex( self, pos, win, tolerance=4. ):
    existingvertex = None
    opos = None
    if hasattr( self, 'temporary' ):
      data = self.temporary
      if data.has_key( 'vertex' ):
        existingvertex = data[ 'vertex' ]
    if existingvertex:
      ro = data[ 'graph' ][ 'ana_object' ].getReferential()
      rw = win.getReferential()
      tr = anatomist.Anatomist().getTransformation( rw, ro )
      if tr is not None:
        opos = tr.transform( pos )
      else:
        opos = pos
      dmin, pmin = self.distanceToVertex( opos, existingvertex )
      if dmin < tolerance:
        return existingvertex
    obj = win.objectAt( pos[0], pos[1], pos[2], win.GetTime() )
    if not obj:
      print 'No object at that position'
      return
    if obj.type() != anatomist.AObject.GRAPHOBJECT:
      print 'Not a Vertex:', obj
      return
    vertex = obj.attributed()
    if vertex.getSyntax() != 'fold':
      if vertex.getSyntax() in \
        [ 'cortical', 'hull_junction', 'junction', 'plidepassage' ]:
        edge = vertex
        dmin = 1.e38
        vertex = None
        if opos is None:
          ro = obj.getReferential()
          rw = win.getReferential()
          tr = anatomist.Anatomist().getTransformation( rw, ro )
          if tr is not None:
            opos = tr.transform( pos )
          else:
            opos = pos
        for v in edge.vertices():
          d, pmin = self.distanceToVertex( opos, v )
          if d < dmin:
            dmin = d
            vertex = v
        if dmin < tolerance:
          return vertex
      print 'Not a cortical fold:', obj, vertex.getSyntax()
      return
    return vertex

  def splitDotted( self, x, y, globx, globy ):
    a = anatomist.Anatomist()
    v = self.view()
    w = v.aWindow()
    pos = aims.Point3df()
    ok = v.positionFromCursor( x, y, pos )
    if not ok:
      return
    vertex = self.findVertex( pos, w )
    if vertex is None:
      return
    ag = None
    try:
      ag = vertex[ 'agraph' ]
    except:
      obj = vertex[ 'ana_object' ]
      ps = obj.parents()
      for p in ps:
        if p.type() == anatomist.AObject.GRAPH:
          ag = p
          break
    if ag is None:
      print 'Vertex has no parent graph, strange. Aborting.'
      return
    g = ag.attributed()
    data = getattr( self, 'temporary', {} )
    if data.has_key( 'splitline' ):
      self.cleanup()
      data = {}
    elif data.has_key( 'graph' ):
      oldg = data[ 'graph' ]
      if oldg != g:
        print 'different graph.'
        self.cleanup()
        data = {}
      else:
        if data.has_key( 'vertex' ):
          oldv = data[ 'vertex' ]
          if oldv != vertex:
            print 'different vertex'
            self.cleanup()
            data = {}
    self.temporary = data
    data[ 'graph' ] = g
    data[ 'vertex' ] = vertex
    points = data.get( 'points', [] )
    vs = g[ 'voxel_size' ]
    ro = ag.getReferential()
    rw = w.getReferential()
    tr = a.getTransformation( rw, ro )
    if tr is not None:
      pos = tr.transform( pos )
    posi = aims.Point3d( round( pos[0] / vs[0] ), round( pos[1] / vs[1] ),
      round( pos[2] / vs[2] ) )
    points.append( posi )
    data[ 'points' ] = points
    sph = aims.SurfaceGenerator.icosahedron( pos, min( vs ) * 0.6 )
    asph = anatomist.AObjectConverter.anatomist( sph )
    asph.setReferentialInheritance( ag )
    a.unmapObject( asph )
    a.releaseObject( asph )
    mat = asph.GetMaterial()
    mat.set( { 'diffuse' : [ 0.8, 0.3, 0., 1. ] } )
    asph.SetMaterial( mat )
    w.registerObject( asph, True )
    spheres = data.get( 'tempobjects', [] )
    spheres.append( asph )
    data[ 'tempobjects' ] = spheres

  def doSplit( self ):
    if not hasattr( self, 'temporary' ):
      print 'nothing to split yet. Use ctrl+left button to set split points.'
      return
    data = self.temporary
    if data.has_key( 'splitline' ): # split confirmed
      self.cleanup()
      splitline = data[ 'splitline' ]
      graph = data[ 'graph' ]
      vertex = data[ 'vertex' ]
      ag = graph[ 'ana_object' ]
      ag.loadSubObjects( 3 )
      fos = aims.FoldArgOverSegment( graph )
      newvertex = fos.splitVertex( vertex, splitline, 50 )
      if newvertex is None:
        print 'Split failed.'
        return
      try:
        bk = vertex[ 'aims_ss_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      try:
        bk = vertex[ 'aims_bottom_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      try:
        bk = vertex[ 'aims_other_ana' ]
        bk.setInternalsChanged()
      except:
        pass
      ag.updateAfterAimsChange()
      av = newvertex[ 'ana_object' ]
      w = self.view().aWindow()
      w.registerObject( av )
      sf = anatomist.SelectFactory.factory()
      sf.unselectAll( w.Group() )
      sf.select( w.Group(), [ av ] )
      ag.notifyObservers()
      sf.refresh()
    else: #  make split line from points
      if not data.has_key( 'graph' ) or not data.has_key( 'vertex' ) \
        or not data.has_key( 'points' ):
        print 'missing split information. Use ctrl+left button to set split points.'
        return
      graph = data[ 'graph' ]
      vertex = data[ 'vertex' ]
      points = data[ 'points' ]
      if len( points ) == 0:
        print 'no split points set. Use ctrl+left button to set split points.'
        return
      fos = aims.FoldArgOverSegment( graph )
      splitline = fos.findSplitLine( vertex, points )
      if splitline:
        data[ 'splitline' ] = splitline
        # show split line
        asplit = anatomist.AObjectConverter.anatomist( splitline )
        a.unmapObject( asplit )
        a.releaseObject( asplit )
        mat = asplit.GetMaterial()
        mat.set( { 'diffuse' : [ 0.6, 0., 0.8, 1. ] } )
        asplit.SetMaterial( mat )
        w = self.view().aWindow()
        w.registerObject( asplit, True )
        data[ 'tempobjects' ].append( asplit )


class SplitFoldControl( anatomist.Control ):
  def __init__( self, prio = 150 ):
    anatomist.Control.__init__( self, prio,
      qt.QT_TRANSLATE_NOOP( 'ControlledWindow', 'SplitFoldControl' ) )
    self.setUserLevel( 2 )

  def eventAutoSubscription( self, pool ):
    self.mousePressButtonEventSubscribe( \
      qt.Qt.LeftButton, qt.Qt.NoModifier,
      pool.action( 'SplitFoldAction' ).split )
    self.mousePressButtonEventSubscribe( \
      qt.Qt.RightButton, qt.Qt.ControlModifier,
      pool.action( 'SplitFoldAction' ).subdivize )
    self.mousePressButtonEventSubscribe( \
      qt.Qt.RightButton, qt.Qt.ShiftModifier,
      pool.action( 'SplitFoldAction' ).subdivizeGraph )
    self.mousePressButtonEventSubscribe( \
      qt.Qt.LeftButton, qt.Qt.ControlModifier,
      pool.action( 'SplitFoldAction' ).splitDotted )
    self.keyPressEventSubscribe( qt.Qt.Key_S, qt.Qt.NoModifier,
      pool.action( 'SplitFoldAction' ).doSplit )
    self.keyPressEventSubscribe( qt.Qt.Key_Escape, qt.Qt.NoModifier,
      pool.action( 'SplitFoldAction' ).cleanup )
    # std actions
    self.mousePressButtonEventSubscribe( qt.Qt.RightButton, qt.Qt.NoModifier,
      pool.action( "MenuAction" ).execMenu )
    self.mouseLongEventSubscribe( qt.Qt.MidButton, qt.Qt.NoModifier,
      pool.action( "Trackball" ).beginTrackball,
      pool.action( "Trackball" ).moveTrackball,
      pool.action( "Trackball" ).endTrackball, True )
    self.mouseLongEventSubscribe( qt.Qt.MidButton, qt.Qt.ShiftModifier,
      pool.action( "Zoom3DAction" ).beginZoom,
      pool.action( "Zoom3DAction" ).moveZoom,
      pool.action( "Zoom3DAction" ).endZoom, True )
    self.wheelEventSubscribe( pool.action( "Zoom3DAction" ).zoomWheel )
    self.mouseLongEventSubscribe( qt.Qt.MidButton, qt.Qt.ControlModifier,
      pool.action( "Translate3DAction" ).beginTranslate,
      pool.action( "Translate3DAction" ).moveTranslate,
      pool.action( "Translate3DAction" ).endTranslate, True )

  def doAlsoOnSelect( self, actionpool ):
    anatomist.Control.doAlsoOnSelect( self, actionpool )
    actionpool.action( 'SplitFoldAction' ).cleanup()

  def doAlsoOnDeselect( self, actionpool ):
    anatomist.Control.doAlsoOnDeselect( self, actionpool )
    actionpool.action( 'SplitFoldAction' ).cleanup()

sf = SplitFoldModule()

a = anatomist.Anatomist()
pix = qtgui.QPixmap( a.anatomistSharedPath() + os.sep + 'icons' \
  + os.sep + 'control-foldsplit.png' )
anatomist.IconDictionary.instance().addIcon( 'SplitFoldControl', pix )
ad = anatomist.ActionDictionary.instance()
ad.addAction( 'SplitFoldAction', lambda: SplitFoldAction() )
cd = anatomist.ControlDictionary.instance()
cd.addControl( 'SplitFoldControl', lambda: SplitFoldControl(), 150 )
cm = anatomist.ControlManager.instance()
cm.addControl( 'QAGLWidget3D', '', 'SplitFoldControl' )