Questions about nodes and connections

[vbk!!!]

Hi,

 

I am coming to python in Houdini to modify a mocap rigs. I would like to add Null between the bones.

If I discovered the input and output methods in the hou.Node, it's still a bit frustrating since it takes the in account the connections and not the hierarchy.

 

So ... is there a way to get all the child nodes from a selected one ( i mean to selected the master null and get all the bone in a tuple) ?

 

Thanks for your help

 

Vincent

[fragmentzero]

You can use the code below in Python source editor.

allChildren = []
def getChildrenFromSelected():
    selectedNodes = hou.selectedNodes()
    for node in selectedNodes:
        getChildren(node)
    print allChildren
    # Process All Children Nodes

def getChildren(node):
    for child in node.children():
        allChildren.append(child)
        getChildren(child)

Then select your parent node and call, hou.session.getChildrenFromSelected()

 

Hope it helps.

[vbk!!!]

sorry but i don't want to dive in a node to get what is inside.

to quote the documentation : "Using the file system analogy, a node’s children are like the contents of a folder/directory." I don't want that

 

 

Using a selected node in Scene Level I would like to get all the childrens of this node ( not its content but its "network").

Sorry if I am not clear ... but in Houdini, children means 2 different things

 

 

Vincent

[fragmentzero]

Hi,

 

I think I understand what do you mean by "children".

e.g. Below is a hierarchy of nodes at /obj level.

 

 

I checked various node methods in python but so far only variations of input/output methods are able to access the hierarchy above.

Do you have a mix of connection nodes & hierarchy nodes you are after? (And that's why you want to isolate the children?)

 

[pezetko]

You can traverse the tree with node.outputs()

import hou

def goDownTree(oNodes):
    """Recursively travel on output nodes"""
    for oNode in oNodes:
        print(oNode.name())
        goDownTree(oNode.outputs())

print("----")
oSel = hou.selectedNodes()
for oNode in oSel:
    print("selected: "+ str(oNode))
    print("children: ")
    goDownTree(oNode.outputs())