pymel.core.modeling.attachCurve¶

attachCurve(*args, **kwargs)¶

This attach command is used to attach curves. Once the curves are attached, there will be multiple knots at the joined point(s). These can be kept or removed if the user wishes. If there are two curves, the end of the first curve is attached to the start of the second curve. If there are more than two curves, closest endpoints are joined. Note: if the command is done with Keep Original off, the first curve is replaced by the attached curve. All other curves will remain, the command does not delete them.

Flags:

Long Name / Short Name		Argument Types	Properties
blendBias / bb		float
	Skew the result toward the first or the second curve depending on the blend factory being smaller or larger than 0.5. Default:0.5
blendKnotInsertion / bki		bool
	If set to true, insert a knot in one of the original curves (relative position given by the parameter attribute below) in order to produce a slightly different effect. Default:false
caching / cch		bool
	Toggle caching for all attributes so that no recomputation is needed
constructionHistory / ch		bool
	Turn the construction history on or off.
frozen / fzn		bool
keepMultipleKnots / kmk		bool
	If true, keep multiple knots at the join parameter. Otherwise remove them. Default:true
method / m		int
	Attach method (connect-0, blend-1) Default:0
name / n		unicode
	Sets the name of the newly-created node. If it contains namespace path, the new node will be created under the specified namespace; if the namespace does not exist, it will be created.
nodeState / nds		int
	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-Blockingwill reset back to Blocking. The Normaland Blockingcases apply to all nodes, while HasNoEffectis node specific; many nodes do not support this option. Plug-ins store state in the MPxNode::stateattribute. Anyone can set it or check this attribute. Additional details about each of these 3 states follow. StateDescriptionNormalThe normal node state. This is the default.HasNoEffectThe HasNoEffectoption (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. Its typical to implement support for the HasNoEffectstate in the nodes 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. BlockingThis is implemented in the depend node base class and applies to all nodes. Blockingis 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 Blockingthe 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 wont evaluate after that. Note that a blocked node will still respond to getAttrrequests but a getAttron a downstream node will not reevaluate the blocked node. Setting the root transform of a hierarchy to Blockingwont automatically influence child transforms in the hierarchy. To do this, youd need to explicitly set all child nodes to the Blockingstate. 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. Default:kdnNormal
object / o		bool
	Create the result, or just the dependency node.
parameter / p		float
	The parameter value for the positioning of the newly inserted knot. Default:0.1
replaceOriginal / rpo		bool
	Create in place(i.e., replace). Flag can have multiple arguments, passed either as a tuple or a list.
reverse1 / rv1		bool
	If true, reverse the first input curve before doing attach. Otherwise, do nothing to the first input curve before attaching. NOTE: setting this attribute to random values will cause unpredictable results and is not supported. Default:false
reverse2 / rv2		bool
	If true, reverse the second input curve before doing attach. Otherwise, do nothing to the second input curve before attaching. NOTE: setting this attribute to random values will cause unpredictable results and is not supported. Default:false Common flags

Derived from mel command maya.cmds.attachCurve

Example:

import pymel.core as pm

# Attach the curves and remove the multiple knots:
pm.attachCurve( 'curve1', 'curve2', kmk=False )