pymel.core.modeling.rebuildCurve¶

rebuildCurve(*args, **kwargs)¶

This command rebuilds a curve by modifying its parameterization. In some cases the shape may also change. The rebuildType (-rt) determines how the curve is to be rebuilt. The optional second curve can be used to specify a reference parameterization.

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.
degree / d		int
	The degree of the resulting curve 1 - linear, 2 - quadratic, 3 - cubic, 5 - quintic, 7 - heptic Default:3
endKnots / end		int
	End conditions for the curve 0 - uniform end knots, 1 - multiple end knots, Default:0
fitRebuild / fr		bool
	If true use the least squares fit rebuild. Otherwise use the convert method. Default:true
frozen / fzn		bool
keepControlPoints / kcp		bool
	If true, the CVs will remain the same. This forces uniform parameterization unless rebuildType is matchKnots. Default:false
keepEndPoints / kep		bool
	If true, keep the endpoints the same. Default:true
keepRange / kr		int
	Determine the parameterization for the resulting curve. 0 - reparameterize the resulting curve from 0 to 1, 1 - keep the original curve parameterization, 2 - reparameterize the result from 0 to number of spans Default:1
keepTangents / kt		bool
	If true, keep the end tangents the same. Default:true
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.
noChanges / nc		bool
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.
range / rn		bool
	Force a curve range on complete input curve.
rebuildType / rt		int
	How to rebuild the input curve. 0 - uniform, 1 - reduce spans, 2 - match knots, 3 - remove multiple knots, 4 - curvature 5 - rebuild ends 6 - clean Default:0
replaceOriginal / rpo		bool
	Create in place(i.e., replace). Flag can have multiple arguments, passed either as a tuple or a list.
smartSurfaceCurveRebuild / scr		bool
	If true, curve on surface is rebuild in 3D and 2D info is kept Default:false
smooth / sm		float
spans / s		int
	The number of spans in resulting curve Used only if rebuildType is uniform. Default:4
tolerance / tol		float
	The tolerance with which to rebuild. Default:0.01 Common flags

Derived from mel command maya.cmds.rebuildCurve

Example:

import pymel.core as pm

# rebuild curve to 5 uniform spans
pm.rebuildCurve( rt=0, s=5 )

# rebuild curve by reducing redundant spans
pm.rebuildCurve( rt=1 )

# rebuild curve by matching the parameterization of another curve
# curve1 is the curve to rebuild
# curve2 is the reference curve
pm.rebuildCurve( 'curve1', 'curve2', rt=2 )

# rebuild curve by removing all multiple interior knots
pm.rebuildCurve( rt=3 )

# rebuild curve using the curvature of the curve
# to create more spans where curvature is higher
pm.rebuildCurve( rt=4 )