pymel.core.modeling.duplicateCurve¶

duplicateCurve(*args, **kwargs)¶

The duplicateCurve command takes a curve on a surface and and returns the 3D curve. The curve on a surface could be isoparam component, trimmed edge or curve on surface object.

Flags:

Long Name / Short Name		Argument Types	Properties
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
local / l		bool
	Copy the transform of the surface and connect to the local space version instead.
maxValue / max		float
	Maximum parameter value for the curve segment. Must be greater than or equal to the minValue attribute. If relative is true, then this attribute has maximum value of 1.0. Default:-1.0
mergeItems / mi		bool
	Merge component results where possible. For example, instead of returning a[1] and a[2], return a[1:2].
minValue / min		float
	Minimum parameter value for the curve segment If relative is true, then this attribute has minimum value of 0.0. Default:1.0
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
range / rn		bool
	Force a curve range on complete input curve.
relative / r		bool
	True means use a relative parameter range, from 0.0 to 1.0. Otherwise, the parameter values are absolute values. Default:false Flag can have multiple arguments, passed either as a tuple or a list.

Derived from mel command maya.cmds.duplicateCurve

Example:

import pymel.core as pm

pm.cone( ch=True, o=True, po=0, ax=(0, 1, 0), r=3, hr=4 )
# Result: [nt.Transform(u'nurbsCone1'), nt.MakeNurbCone(u'makeNurbCone1')] #

# duplicate isoparm at v param 0.5 with history
pm.duplicateCurve( 'nurbsCone1.v[0.5]', ch= True, o=True )
# Result: [u'duplicatedCurve1', u'curveFromSurfaceIso1'] #

# duplicate isoparm at normalized u param 0.1, no history
pm.duplicateCurve( 'nurbsCone1.un[0.1]', ch=False )
# Result: [u'duplicatedCurve2'] #

pm.nurbsPlane( ch=True, o=True, po=0, ax=(0, 1, 0), w=10, lr=1 ) ;
pm.circle( ch=True, o=True, nr=(0, 1, 0), r=4 ) ;
pm.projectCurve( 'nurbsCircle1', 'nurbsPlane1', ch=False, rn=False, un=False, tol=0.01 )
# Result: [nt.CurveVarGroup(u'nurbsPlaneShape1->projectionCurve1')] #
# duplicate curve on surface
pm.duplicateCurve( 'nurbsPlaneShape1-"projectionCurve1_1', ch=True, o=False )

pm.trim( 'nurbsPlaneShape1', 'projectionCurve1_Shape1', ch=True, o=True, rpo=True, lu=0.2, lv=0.3 )
# duplicate trim edge
pm.duplicateCurve( 'nurbsPlane1.edge[1][1][1]', ch=True, o=False);