Source Code for Module nukescripts.precomp

  1  # Copyright (c) 2009 The Foundry Visionmongers Ltd.  All Rights Reserved. 
  2  import nuke, os, re, sys, math, time 
  3  from nukescripts import execute_panel 
  4  from nukescripts import panels 
  5   
  6 -class PrecompOptionsDialog( panels.PythonPanel ): 
  7 -  def __init__( self ): 
  8      panels.PythonPanel.__init__( self, "Precomp Nodes", "uk.co.thefoundry.PrecompOptionsDialog" ) 
  9      self.scriptPath = nuke.File_Knob( "script", "Precomp script path " ) 
 10      self.renderPath = nuke.File_Knob( "render", "Precomp render path " ) 
 11      self.channels = nuke.Channel_Knob( "channels", "Channels " ) 
 12      self.origNodes = nuke.Enumeration_Knob( "orig", "Original nodes ", ["add backdrop", "delete", "no change" ] ) 
 13      self.addKnob ( self.scriptPath ) 
 14      self.addKnob ( self.renderPath ) 
 15      self.addKnob ( self.channels ) 
 16      self.addKnob ( self.origNodes ) 
 17   
 18      self.channels.setValue('all') 
 19   
 20      defaultDir = nuke.Root()['name'].value() 
 21      if defaultDir and defaultDir != "": 
 22        defaultDir = os.path.dirname( defaultDir ) 
 23        if not defaultDir.endswith("/"): 
 24          defaultDir += "/" 
 25      else: 
 26        defaultDir = "" 
 27   
 28      basename = findNextName("Precomp") 
 29      self.scriptPath.setValue( defaultDir + basename + "_v01.nk" ) 
 30      self.renderPath.setValue( defaultDir + basename + ".####.exr" ) 
 31      self.setMinimumSize( 420, 50 ) 
 32   
 33 -class PrecompOptions: 
 34 -  def __init__(self): 
 35      self.scriptPath = "" 
 36      self.renderPath = "" 
 37      self.channels = "" 
 38      self.addBackdrop = False 
 39      self.delete = False 
 40   
 41 -  def askUserForOptions(self): 
 42      p = PrecompOptionsDialog() 
 43      result = p.showModalDialog() 
 44      if result: 
 45        self.scriptPath = p.scriptPath.value() 
 46        self.renderPath = p.renderPath.value() 
 47        self.channels = p.channels.value() 
 48        if p.origNodes.value() == "delete": 
 49          self.delete = True 
 50        elif p.origNodes.value() == "add backdrop": 
 51          self.addBackdrop = True 
 52   
 53        if nuke.env['nc']: 
 54          nukeExt = ".nknc" 
 55        else: 
 56          nukeExt = ".nk" 
 57   
 58        (root, ext) = os.path.splitext(self.scriptPath) 
 59        if not ext: 
 60          self.scriptPath += nukeExt 
 61        elif ext == ".nk" and ext != nukeExt: 
 62          self.scriptPath = self.scriptPath[0:-3] + nukeExt 
 63   
 64        (root,ext) = os.path.splitext(self.renderPath) 
 65        if not ext: 
 66          self.renderPath += ".exr" 
 67   
 68        if os.path.exists(self.scriptPath): 
 69          if not nuke.ask("Overwrite existing " + self.scriptPath + " ?"): 
 70            return False 
 71        return True 
 72      else: 
 73        return False 
 74   
 75 -def precomp_open(precomp): 
 76    nuke.Root().setModified( True ) 
 77    nuke.scriptOpen(precomp["file"].evaluate()) 
 78   
 79 -def precomp_render(precomp): 
 80    reading = precomp["reading"].getValue() 
 81    precomp["reading"].setValue( False ) 
 82    try: 
 83      finalNode = None 
 84      if precomp['useOutput'].value() == True: 
 85        finalNode = nuke.toNode( precomp['output'].value() ) 
 86      else: 
 87        if precomp.output() and precomp.output().input(0): 
 88          finalNode = precomp.output().input(0) 
 89      execute_panel( [ finalNode ] ) 
 90    except RuntimeError, e: 
 91      if e.message[0:9] != "Cancelled":   # TO DO: change this to an exception type 
 92        raise 
 93      return 
 94    precomp["reading"].setValue( True ) 
 95   
 96 -def findNextName(name): 
 97    i = 1 
 98    while nuke.toNode ( name + str(i) ) != None: 
 99      i += 1 
100   
101    return name + str(i) 
102   
103 -def precomp_copyToGroup(precomp): 
104   
105    ## group context is set to precomp, so back up one level. 
106    nuke.endGroup() 
107   
108    g = nuke.nodes.Group() 
109    with precomp: 
110      nuke.selectAll() 
111      nuke.nodeCopy ( '%clipboard%' ) 
112   
113    with g: 
114      nuke.nodePaste( '%clipboard%' ) 
115   
116    for k in ['label', 'icon', 'indicators', 'tile_color', 'disable']: 
117      v =  precomp[k].getValue() 
118      if v: 
119        g[k].setValue( v ) 
120   
121   
122 -def precomp_selected(): 
123   
124    nodes = nuke.selectedNodes() 
125    if len(nodes) == 0: 
126      g = nuke.createNode( "Precomp" ) 
127      return 
128   
129    options = PrecompOptions() 
130   
131    if not options.askUserForOptions(): 
132      return False 
133   
134    sel = nodes[0] 
135   
136    ## select upstream nodes 
137    if len( nodes ) == 1: 
138      upstreamNodes = nuke.dependencies( nodes ) 
139      while len ( upstreamNodes ) != 0: 
140        nodes += upstreamNodes 
141        upstreamNodes = nuke.dependencies( upstreamNodes ) 
142   
143    left = right = nodes[0].xpos() 
144    top = bottom = nodes[0].ypos() 
145   
146    nodeSize = 100 
147    titleHeight = 50 
148   
149    inputs = [] 
150   
151    for n in nodes: 
152      n["selected"].setValue ( True ) 
153      if n.xpos() < left: 
154        left = n.xpos() 
155   
156      if n.xpos() > right: 
157        right = n.xpos() 
158   
159      if n.ypos() < top: 
160        top = n.ypos() 
161   
162      if n.ypos() > bottom: 
163        bottom = n.ypos() 
164   
165      for i in range( 0, n.inputs() ): 
166        if not n.input(i): 
167          continue 
168   
169        if not n.input(i) in nodes: 
170          inputs.append( n.input(i) ) 
171   
172    ## find all the dependent nodes 
173    inputDeps = [] 
174    expressionDeps = [] 
175   
176    for n in nodes: 
177      for d in nuke.dependentNodes( nuke.INPUTS, [n]): 
178        if d not in nodes: 
179          if d.Class() != 'Viewer': 
180            inputIndices = [i for i in range(d.inputs()) if d.input(i) == n] 
181            inputDeps.append( (d, inputIndices) ) 
182   
183      for d in nuke.dependencies( [n], nuke.EXPRESSIONS ): 
184        if d not in nodes: 
185          expressionDeps.append( d ) 
186   
187    if len(inputDeps) > 1: 
188      nuke.message( "You cannot precomp the selected nodes because there are multiple outputs." ) 
189      return 
190   
191    addLinkedExpressionNodes = False 
192    if len(expressionDeps) > 0: 
193      addLinkedExpressionNodes = nuke.ask( "Warning: The selected nodes have expressions to nodes outside the precomp. Do you want to copy these nodes to the precomp?" ) 
194   
195    ## make group and export 
196    if len( nodes ) == 1 and nodes[0].Class() == "Group": 
197      group = nodes[0] 
198    else: 
199      group = nuke.makeGroup( False ) 
200   
201    with group: 
202      outputInputs = [] 
203      output = group.output() 
204      for i in range(0, output.inputs()): 
205        outputInputs.append( output.input(i) ) 
206   
207      ## insert write node or use existing one 
208      outInp = output.input(0) 
209      if outInp is None or outInp.Class() != "Write": 
210        w = nuke.createNode( "Write", inpanel = False) 
211        w.setInput( 0, None ) 
212      else: 
213        w = outInp 
214   
215      for i in range(0, len(outputInputs) ): 
216        w.setInput( i, outputInputs[i] ) 
217        output.setInput(i, None ) 
218   
219      output.setInput(0, w ) 
220   
221      w.knob("file").setValue( options.renderPath ) 
222      type = os.path.splitext( options.renderPath)[1][1:].lower() 
223      w.knob("file_type").setValue( type ) 
224      w.knob("channels").setValue( options.channels ) 
225   
226      for n in nuke.allNodes(): 
227        n['selected'].setValue( False ) 
228   
229    if addLinkedExpressionNodes: 
230      for n in nuke.allNodes(): 
231        n['selected'].setValue( False ) 
232   
233      for n in expressionDeps: 
234        n['selected'].setValue( True ) 
235   
236      nuke.nodeCopy ( '%clipboard%' ) 
237   
238      with group: 
239        nuke.nodePaste( '%clipboard%' ) 
240   
241    writeOk = True 
242    with group: 
243      try: 
244        nuke.tcl("export_as_precomp",  options.scriptPath) 
245      except: 
246        nuke.message( "Could not write precomp script, permission denied, please specify a different \'script path\' and try again.") 
247        writeOk = False 
248   
249      for n in nuke.selectedNodes(): 
250        n['selected'].setValue( False ) 
251   
252    if group != nodes[0]: 
253      group['selected'].setValue( False ) 
254      nuke.delete( group ) 
255   
256    if not writeOk: 
257      for n in nuke.selectedNodes(): 
258        n['selected'].setValue( False ) 
259   
260      for n in nodes: 
261        n['selected'].setValue( True ) 
262   
263      return 
264   
265    ## reload saved out script 
266    g = nuke.createNode( "Precomp" ) 
267    g[ "file" ].setValue( options.scriptPath ) 
268   
269    #nuke.tprint( "Selected Node: " + sel.name() ) 
270   
271    for d in inputDeps: 
272      node = d[0] 
273      for inp in d[1]: 
274        #nuke.tprint ( "Reconnecting dep " + node.name() + " input " + str(inp) ) 
275        node.setInput(inp, g) 
276   
277    ## reconnect inputs, if any 
278    for i in range(0, len(inputs)): 
279      #nuke.tprint ( "Reconnecting input " + inputs[i].name() + " " + str(i) ) 
280      g.setInput(i, inputs[i] ) 
281   
282    pad = 5 
283   
284    if options.addBackdrop: 
285      b = nuke.createNode( "BackdropNode", inpanel = False ) 
286      width = int(math.fabs(right - left)) + (pad * 2) + nodeSize 
287      height = int(math.fabs(bottom - top)) + ( pad * 2 ) + nodeSize + titleHeight 
288      b['label'].setValue( os.path.basename( options.scriptPath ) ) 
289      b['note_font_size'].setValue( 18 ) 
290      b.setXYpos( left - pad * 2, top - ( pad * 2) - titleHeight ) 
291      b.knob( "bdwidth" ).setValue( width  ) 
292      b.knob( "bdheight").setValue( height ) 
293      b.knob( "z_order" ).setValue( 0 ) 
294      b['selected'].setValue(False) 
295      g.setXYpos( b.xpos() + width/2 - nodeSize/2, b.ypos() + height + pad * 2 ) 
296    elif options.delete: 
297      for n in nodes: 
298        nuke.delete( n ) 
299   
300    if len(inputs) > 0: 
301      nuke.message( "Warning: The precomp script requires inputs and may not render the same independent of its parent script." ) 
302   
303    return group 
304