Go to: Synopsis. Return value. Flags. MEL examples.

Synopsis

stitchSurface [-bias float] [-caching boolean] [-cascade boolean] [-constructionHistory boolean] [-cvIthIndex int] [-cvJthIndex int] [-fixBoundary boolean] [-keepG0Continuity boolean] [-keepG1Continuity boolean] [-name string] [-nodeState int] [-numberOfSamples int] [-object boolean] [-parameterU float] [-parameterV float] [-positionalContinuity boolean] [-replaceOriginal boolean] [-stepCount int] [-tangentialContinuity boolean] [-togglePointNormals boolean] [-togglePointPosition boolean] [-toggleTolerance boolean] [-tolerance linear] [-weight0 float] [-weight1 float] [surfaceIsoparm] [surfaceIsoparm]

stitchSurface is undoable, queryable, and editable.

The stitchSurface command aligns two surfaces together to be G(0) and/or G(1) continuous by ajusting only the Control Vertices of the surfaces. The two surfaces can be stitched by specifying the two isoparm boundary edges that are to stitched together. The edge to which the two surfaces are stitched together is obtained by doing a weighted average of the two edges. The weights for the two edges is specified using the flags -wt0, -wt1 respectively.

Return value

string[]Object name and node name

In query mode, return type is based on queried flag.

Flags

bias, caching, cascade, constructionHistory, cvIthIndex, cvJthIndex, fixBoundary, keepG0Continuity, keepG1Continuity, name, nodeState, numberOfSamples, object, parameterU, parameterV, positionalContinuity, replaceOriginal, stepCount, tangentialContinuity, togglePointNormals, togglePointPosition, toggleTolerance, tolerance, weight0, weight1
Long name (short name) Argument types Properties
-bias(-b) float createqueryedit
Blend CVs in between input surface and result from stitch. A value of 0.0 returns the input surface.
Default: 1.0
-caching(-cch) boolean createqueryedit
Toggle caching for all attributes so that no recomputation is needed
-cvIthIndex(-ci) int createqueryeditmultiuse
The ith boundary CV index on the input surface.
Default: -1
-cvJthIndex(-cj) int createqueryeditmultiuse
The jth boundary CV index on the input surface.
Default: -1
-fixBoundary(-fb) boolean createqueryedit
Fix Boundary CVs while solving for any G1 constraints.
Default: false
-nodeState(-nds) int createqueryedit

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.

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.


Default: kdnNormal
-parameterU(-u) float createqueryeditmultiuse
The U parameter value on surface for a point constraint.
Default: -10000
-parameterV(-v) float createqueryeditmultiuse
The V parameter value on surface for a point constraint.
Default: -10000
-positionalContinuity(-pc) boolean createqueryeditmultiuse
Toggle on (off) G0 continuity at edge corresponding to multi index.
Default: true
-stepCount(-sc) int createqueryeditmultiuse
Step count for the number of discretizations.
Default: 20
-tangentialContinuity(-tc) boolean createqueryeditmultiuse
Toggle on (off) G1 continuity across edge corresponding to multi index.
Default: false
-togglePointNormals(-tpn) boolean createqueryedit
Toggle on (off) normal point constraints on the surface.
Default: false
-togglePointPosition(-tpp) boolean createqueryedit
Toggle on (off) position point constraints on the surface.
Default: true
-toggleTolerance(-tt) boolean createqueryeditmultiuse
Toggle on (off) so as to use Tolerance or specified steps for discretization.
Default: false
-tolerance(-tol) linear createqueryeditmultiuse
Tolerance to use while discretizing the edge.
Default: 0.1
Common flags
-cascade(-c) boolean create
Cascade the created stitch node. (Only if the surface has a stitch history)
Default is 'false'.
-constructionHistory(-ch) boolean create
Turn the construction history on or off.
-keepG0Continuity(-kg0) boolean create
Stitch together with positional continuity.
Default is 'true'.
-keepG1Continuity(-kg1) boolean create
Stitch together with tangent continuity.
Default is 'false'.
-name(-n) string create
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.
-numberOfSamples(-ns) int create
The number of samples on the edge.
Default is 20.
-object(-o) boolean create
Create the result, or just the dependency node.
-replaceOriginal(-rpo) boolean create
Create "in place" (i.e., replace).
-weight0(-wt0) float create
The weighting factor for the first edge.
Default is 0.5.
-weight1(-wt1) float create
The weighting factor for the second edge.
Default is 0.5.

Flag can appear in Create mode of command Flag can appear in Edit mode of command
Flag can appear in Query mode of command Flag can be used more than once in a command.

MEL examples

// Stitch the two surfaces along the two specified surface isoparam with C0 continuity.
// Since wt0 = 0.0, both the surfaces are stitched to surface2.vn[0] really.
stitchSurface -kg0 false -kg1 true -cascade false -ns 100 -wt0 0.0 -wt1 1.0 surface1.vn[1.0] surface2.vn[0.0];