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polyUnite(
poly poly [poly ...]
, [caching=boolean], [centerPivot=boolean], [mergeUVSets=int], [nodeState=int], [objectPivot=boolean])
Note: Strings representing object names and arguments must be separated by commas. This is not depicted in the synopsis.
polyUnite is undoable, queryable, and editable.
This command creates a new poly as an union of a list of polys
If no objects are specified in the command line, then the
objects from the active list are used.
| string[] | Object name and node name. |
In query mode, return type is based on queried flag.
polyBoolOp, polySeparate
caching, centerPivot, mergeUVSets, nodeState, objectPivot
| Long name (short name) |
Argument types |
Properties |
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caching(cch)
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boolean
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Toggle caching for all attributes so that no recomputation is needed
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mergeUVSets(muv)
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int
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Specify how UV sets will be merged on the output mesh.
The choices are 0 | 1 | 2.
0 = Do not merge. Each UV set on each mesh will become a new UV set in the output.
1 = Merge by name. UV sets with the same name will be merged.
2 = Merge by UV links. UV sets will be merged so that UV linking on the input meshes continues to work.
The default is 1 (merge by name).
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nodeState(nds)
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int
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Maya dependency nodes have 6 possible states.
The Normal (0), HasNoEffect (1), and Blocking (2) states can be
used to alter how the graph is evaluated.
The Waiting-Normal (3), Waiting-HasNoEffect (4), Waiting-Blocking (5)
are for internal use only. They temporarily shut off parts of the graph during interaction
(e.g., manipulation). The understanding is that once the operation is done,
the state will be reset appropriately, e.g. Waiting-Blocking will reset
back to Blocking.
The Normal and Blocking cases apply to all nodes, while
HasNoEffect is node specific; many nodes do not support this option.
Plug-ins store state in the MPxNode::state attribute. Anyone can set
it or check this attribute. Additional details about each of these 3 states follow.
| State |
Description |
| Normal |
The normal node state. This is the default. |
| HasNoEffect |
The HasNoEffect option (a.k.a. pass-through), is used in cases where
there is an operation on an input producing an output of the same data type.
Nearly all deformers support this state, as do a few other nodes.
As stated earlier, it is not supported by all nodes.
It’s typical to implement support for the HasNoEffect state in
the node’s compute method and to perform appropriate operations.
Plug-ins can also support HasNoEffect.
The usual implementation of this state is to copy the input directly to the
matching output without applying the algorithm in the node. For deformers,
applying this state leaves the input geometry undeformed on the output.
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| Blocking |
This is implemented in the depend node base class and applies to all nodes.
Blocking is applied during the evaluation phase to connections.
An evaluation request to a blocked connection will return as failures,
causing the destination plug to retain its current value. Dirty propagation
is indirectly affected by this state since blocked connections are never cleaned.
When a node is set to Blocking the behavior is supposed to be the same as
if all outgoing connections were broken. As long as nobody requests evaluation
of the blocked node directly it won’t evaluate after that. Note that a blocked
node will still respond to getAttr requests but a getAttr on a
downstream node will not reevaluate the blocked node.
Setting the root transform of a hierarchy to Blocking won’t automatically
influence child transforms in the hierarchy. To do this, you’d need to
explicitly set all child nodes to the Blocking state.
For example, to set all child transforms to Blocking, you could use the
following script.
import maya.cmds as cmds
def blockTree(root):
nodesToBlock = []
for node in {child:1 for child in cmds.listRelatives( root, path=True, allDescendents=True )}.keys():
nodesToBlock += cmds.listConnections(node, source=True, destination=True )
for node in {source:1 for source in nodesToBlock}.keys():
cmds.setAttr( '%s.nodeState' % node, 2 )
Applying this script would continue to draw objects but things would not be animated.
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Default: kdnNormal
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| Common flags |
centerPivot(cp)
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boolean
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Set the resulting object's pivot to the center of the selected objects bounding box.
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objectPivot(op)
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boolean
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Set the resulting object's pivot to last selected object's pivot.
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Flag can appear in Create mode of command
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Flag can appear in Edit mode of command
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Flag can appear in Query mode of command
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Flag can have multiple arguments, passed either as a tuple or a list.
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import maya.cmds as cmds
cmds.polySphere( n='plg1' )
cmds.polyCube( w=2, h=.2, d=2, n='plg2' )
cmds.move( 0, -1.1, 0 )
cmds.polyCube( w=2, h=.2, d=2, n='plg3' )
cmds.move( 0, 1.1, 0 )
cmds.polyUnite( 'plg1', 'plg2', 'plg3', n='result' )
cmds.rotate( 0, 0, 90, 'result' )