change Roto Views to left and right

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RotoViewsPanel.py

This little python script will help you lot when working with stereoscopic conversion. While Import roto nodes from silhouette, mocha and other software’s, Imported roto nodes are output the channels only on "Left" view.

Like below image.

 We have to change the roto shapes view on both "left & right" for stereo conversion. To do that, manually select all rotoshapes and set the view on "left - right". This may take lot of time to do this on bigger shots. So how to reduce this manual work. Here is the solution for that.

RotoViewsPanel.py.

This script will pop-up a window for setting the selected or all roto nodes views to left are right only are Both. Run this script on nukes script editor and enjoy.


result:
Hope this script will help you friends.


RotoViewsPanel script:

class RotoViewsPanel(nukescripts.PythonPanel):
    def __init__(self):
        import nuke.rotopaint
        super(RotoViewsPanel,self).__init__('Change views on RotoPaint Nodes...' )

        self.changeKnob = nuke.Enumeration_Knob('change', 'change', ['all RotoPaint nodes', 'selected RotoPaint nodes'])
        self.addKnob(self.changeKnob)

        self.viewsKnob = nuke.MultiView_Knob('views')
        self.addKnob(self.viewsKnob)
        self.viewsKnob.setValue((' ').join(nuke.views()))

        self.okButton = nuke.Script_Knob( "Change Views" )
        self.addKnob( self.okButton )
        self.okButton.setFlag( nuke.STARTLINE )
        self.cancelButton = nuke.Script_Knob( "Cancel" )
        self.addKnob( self.cancelButton )


    def knobChangedCallback(self, knob):
        self.knobChanged(knob)
        if knob == self.okButton:
            self.finishModalDialog( True )

            if self.changeKnob.value() == 'all RotoPaint nodes':
                self.__nodes = nuke.allNodes('RotoPaint')
                self.__nodes.extend(nuke.allNodes('Roto'))
            elif self.changeKnob.value() == 'selected RotoPaint nodes':
                self.__nodes = nuke.selectedNodes('RotoPaint')
                self.__nodes.extend(nuke.selectedNodes('Roto')) 
            self.__views =  self.viewsKnob.value().split(' ')

            self.changeViews(self.__nodes, self.__views)

        elif knob == self.cancelButton:
            self.finishModalDialog( False )

    def getShapes(self, layer):
        shapes = []
        for element in layer:
            if isinstance(element, nuke.rotopaint.Layer):
                shapes.extend(self.getShapes(element))
            elif isinstance(element, nuke.rotopaint.Shape) or isinstance(element, nuke.rotopaint.Stroke):
                shapes.append(element)
        return shapes

    def changeViews(self, nodes, views):
        for n in nodes:
            print n.name()
            k = n['curves']
            shapes = self.getShapes(k.rootLayer)
            for s in shapes:
                attrs = s.getAttributes()
              
                # reset the number of views attribute
                if 'nv' in attrs:
                  attrs.remove('nv')
                  attrs.add('nv', len(views))

                # delete any previous view attributes
                count = 1
                while ('view%s' % count) in attrs:             
                  attrs.remove('view%s'% count)
                  count +=1

                # handle no selected views
                if views == [''] :
                  attrs.add('view1', 0.0)
                # handle any other number of views
                else:                   
                    count = 1
                for view in views:
                   index = float(nuke.views().index(view)+1)
                   attrs.add('view%s'% count, index)
                   count +=1
            k.changed()


p = RotoViewsPanel().showModalDialog()

Comments

  1. SamJuly 9, 2012 at 1:25 PM

    Hi,
    I'm trying to find a way to assign random colors to all the existing rotoshapes within a script.

    n = nuke.selectedNode()
    for item in n['curves'].rootLayer:
    attr = item.getAttributes()
    attr.set(nuke.frame(), 'r', 1.0)
    attr.set(nuke.frame(), 'g', 1.0)
    attr.set(nuke.frame(), 'b', 1.0)

    Any idea who to do that?
    Many Thanks
    Sam

    ReplyDelete
  2. satheesh nuke tutorialsJuly 12, 2012 at 12:22 AM

    Here is the code for you....

    def randomRotoColor():
    rotoNode = nuke.selectedNode()
    rotoCurve = rotoNode['curves']
    rotoRoot = rotoCurve.rootLayer
    for i in rotoRoot:
    if isinstance(i, nuke.rotopaint.Shape):
    attrs = i.getAttributes()
    randR = nuke.expression('random()')
    randG = nuke.expression('random()')
    randB = nuke.expression('random()')
    attrs.set('r', randR)
    attrs.set('g', randG)
    attrs.set('b', randB)

    randomRotoColor()

    ReplyDelete
    Replies
    1. SamJuly 12, 2012 at 1:20 AM

      wow, this is great thanks! I wasn't expecting you to give me the actual code! It's working - I've got only one issue, once the colours are assigned it doesn't update the viewer unless you select the rotoshapes so you can see the colours! Did you come across this too? Thanks

      Delete
    2. satheesh nuke tutorialsJuly 13, 2012 at 11:51 PM

      Hi sam this is bug in nuke. I hope in future release they have going to fix that...

      Here is the another code which is work with child Layers also.

      import nuke
      import math
      def randomRotoColor(elem):
      for i in elem:
      if isinstance(i, nuke.rotopaint.Layer):
      randomRotoColor(i)
      elif isinstance(i, nuke.rotopaint.Shape):
      attrs = i.getAttributes()
      randR = nuke.expression('random()')
      randG = nuke.expression('random()')
      randB = nuke.expression('random()')
      attrs.set('r', randR)
      attrs.set('g', randG)
      attrs.set('b', randB)



      rotoNode = nuke.selectedNode()
      rotoCurve = rotoNode['curves']
      rotoRoot = rotoCurve.rootLayer
      randomRotoColor(rotoRoot)

      Delete
  3. SamJuly 18, 2012 at 4:56 PM

    thanks man, i'm trying to make it work for a group consisted of rotoshapes now - no luck so far!
    by the way, i found a little trick to update the viewer with the new colours; just add this at bottom of the code:
    nuke.frame(nuke.frame()+1)

    ReplyDelete
  4. SamJuly 18, 2012 at 5:04 PM

    by the way - I need to apply the same colour to all the children ... so still trying to use your previous code

    ReplyDelete
    Replies
    1. satheesh nuke tutorialsJuly 18, 2012 at 11:54 PM

      below code will apply "Gray" color to all the shapes. If you want to assign different color, Then try with some other color values on "attrs.set('r', 0.5)" lines. This code works with group node also.


      def randomRotoColor(elem):
      for i in elem:
      if isinstance(i, nuke.rotopaint.Layer):
      randomRotoColor(i)
      elif isinstance(i, nuke.rotopaint.Shape):
      attrs = i.getAttributes()
      attrs.set('r', 0.5)
      attrs.set('g', 0.5)
      attrs.set('b', 0.5)
      tos = []
      for a in nuke.toNode('Group1').nodes():
      if a.Class()=='Roto':
      tos.append(a)
      for b in tos:
      rotoCurve = b['curves']
      rotoRoot = rotoCurve.rootLayer
      randomRotoColor(rotoRoot)

      Delete

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