Source Code for Module nuke.overrides

  1  # Copyright (c) 2009 The Foundry Visionmongers Ltd.  All Rights Reserved. 
  2   
  3  import sys, types, _nuke, os, re 
  4   
  5   
  6 -def pluginAddPath(args, addToSysPath = True): 
  7    """ Adds all the paths to the beginning of the Nuke plugin path. 
  8        If the path already exists in the list of plugin paths, it is moved 
  9        to the start. If this command is executed inside an init.py then 
 10        the init.py in the path will be executed. 
 11        It also adds the paths to the sys.path, if addToSysPath is True.""" 
 12    if type(args) != types.TupleType and type(args) != types.ListType: 
 13      args = [args] 
 14   
 15    # Trim any trailing slashes or backslashes from the path, because they confuse python 
 16    args = [re.sub(r"[/\\]+$", "", arg) for arg in args] 
 17    # Remove any empty strings from the list 
 18    args = [arg for arg in args if arg] 
 19   
 20    # Nuke does it's own resolution of relative filenames, so that they end up 
 21    # relative to the right location. Rather than duplicating that logic here, 
 22    # we just get the difference between the pluginPath before and after we've 
 23    # added the new paths. 
 24       
 25    if addToSysPath: 
 26      oldPluginPath = tuple(_nuke.pluginPath()) 
 27       
 28    for i in args: 
 29      _nuke.pluginAddPath(i) 
 30   
 31    if addToSysPath: 
 32      newPaths = [ p for p in _nuke.pluginPath() if p not in oldPluginPath ] 
 33      for path in newPaths: 
 34        if path not in sys.path: 
 35          sys.path.insert(0, path) 
 36   
 37   
 38 -def pluginAppendPath(args, addToSysPath = True): 
 39    """ Add a filepath to the end of the Nuke plugin path.  If the path 
 40        already exists in the list of plugin paths, it will remain at its 
 41        current position. 
 42        It also appends the paths to the sys.path, if addToSysPath is True.""" 
 43    if type(args) != types.TupleType and type(args) != types.ListType: 
 44      args = [args] 
 45   
 46    # Nuke does it's own resolution of relative filenames, so that they end up 
 47    # relative to the right location. Rather than duplicating that logic here, 
 48    # we just get the difference between the pluginPath before and after we've 
 49    # added the new paths. 
 50       
 51    if addToSysPath: 
 52      oldPluginPath = tuple(_nuke.pluginPath()) 
 53       
 54    for i in args: 
 55      _nuke.pluginAppendPath(i) 
 56   
 57    if addToSysPath: 
 58      newPaths = [ p for p in _nuke.pluginPath() if p not in oldPluginPath ] 
 59      for path in newPaths: 
 60        if path not in sys.path: 
 61          sys.path.append(path) 
 62   
 63   
 64 -def dependencies(nodes, what = _nuke.INPUTS | _nuke.HIDDEN_INPUTS | _nuke.EXPRESSIONS): 
 65    """ List all nodes referred to by the nodes argument. 'what' is an optional integer (see below). 
 66    You can use the following constants or'ed together to select the types of dependencies that are looked for: 
 67    \t nuke.EXPRESSIONS = expressions 
 68    \t nuke.INPUTS = visible input pipes 
 69    \t nuke.HIDDEN_INPUTS = hidden input pipes. 
 70    The default is to look for all types of connections. 
 71    \nExample: 
 72    n1 = nuke.nodes.Blur() 
 73    n2 = nuke.nodes.Merge() 
 74    n2.setInput(0, n1) 
 75    deps = nuke.dependencies([n2], nuke.INPUTS | nuke.HIDDEN_INPUTS | nuke.EXPRESSIONS)""" 
 76   
 77    if type(nodes) != types.TupleType and type(nodes) != types.ListType: 
 78      nodes = [nodes] 
 79   
 80    deps = [] 
 81    for i in nodes: deps += i.dependencies(what) 
 82    seen = set() 
 83    deps = [i for i in deps if i not in seen and not seen.add(i)] 
 84   
 85    return deps 
 86   
 87 -def dependentNodes(what = _nuke.INPUTS | _nuke.HIDDEN_INPUTS | _nuke.EXPRESSIONS, nodes = [], evaluateAll = True): 
 88    """ List all nodes referred to by the nodes argument. 'what' is an optional integer (see below). 
 89    You can use the following constants or'ed together to select what types of dependent nodes are looked for: 
 90    \t nuke.EXPRESSIONS = expressions 
 91    \t nuke.INPUTS = visible input pipes 
 92    \t nuke.HIDDEN_INPUTS = hidden input pipes. 
 93    The default is to look for all types of connections. 
 94     
 95    evaluateAll is an optional boolean defaulting to True. When this parameter is true, it forces a re-evaluation of the entire tree. 
 96    This can be expensive, but otherwise could give incorrect results if nodes are expression-linked. 
 97     
 98    \nExample: 
 99    n1 = nuke.nodes.Blur() 
100    n2 = nuke.nodes.Merge() 
101    n2.setInput(0, n1) 
102    ndeps = nuke.dependentNodes(nuke.INPUTS | nuke.HIDDEN_INPUTS | nuke.EXPRESSIONS, [n1]) 
103     
104    @param what: Or'ed constant of nuke.EXPRESSIONS, nuke.INPUTS and nuke.HIDDEN_INPUTS to select the types of dependent nodes. The default is to look for all types of connections. 
105    @param evaluateAll: Specifies whether a full tree evaluation will take place. Defaults to True. 
106    @return: List of nodes. """ 
107   
108    if type(nodes) != types.TupleType and type(nodes) != types.ListType: 
109      nodes = [nodes] 
110   
111    deps = [] 
112    for i in nodes: 
113      deps += i.dependent(what, forceEvaluate = evaluateAll) 
114      evaluateAll = False 
115    seen = set() 
116    deps = [i for i in deps if i not in seen and not seen.add(i)] 
117   
118    return deps 
119   
120 -def selectConnectedNodes(): 
121    """ Selects all nodes in the tree of the selected node. """ 
122    allDeps = set() 
123    depsList = [_nuke.selectedNode()] 
124    evaluateAll = True 
125    while depsList: 
126      deps = dependencies(depsList, _nuke.INPUTS | _nuke.HIDDEN_INPUTS) 
127      deps += dependentNodes(_nuke.INPUTS | _nuke.HIDDEN_INPUTS, depsList, evaluateAll) 
128      evaluateAll = False 
129      depsList = [i for i in deps if i not in allDeps and not allDeps.add(i)] 
130   
131    for i in allDeps: i['selected'].setValue(True) 
132