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Related nodes. Attributes.
This node implements a scaleConstraint. Each constraint has a set
of targets that are connected under the target attribute, a single
constrained object that is connected to the constraint* attributes,
and possibly other information to help compute the correct results.
In the case of the scaleConstraint, there is no other information.
The scaleConstraint node can have any number of target inputs.
Each target is connected to attributes inside a single element
of the target attribute. For example, the first target object
would be connected elements of target[0], the second target object
would be connected to elements of target[1], etc. The elements of
each target are: targetScale, targetParentMatrix, and
targetWeight.
The elements of each target are normally connected to the target
objects as follows:
| scaleConstraint attribute |
connected to |
| targetScale |
scale |
| targetParentMatrix |
parentMatrix[i] |
| targetWeight |
set to 1.0 |
The targetWeight attribute is not generally connected to the
target object. Instead, it may be animated by other means to
adjust the weighted average computation for the target scale.
The scaleConstraint node uses these inputs to compute the world
space scale factor of each target object. It then
computes a weighted geometric average of the these scales. This
weighted average is called the target scale.
The constrained object is connected to the constraint*
attributes. For a scaleConstraint, the attribute
constraintParentInverseMatrix is an input and the attribute
constraintTranslate is the only output.
The scaleConstraint node computes an output scale value such
that the world space scale factor of the constrained object
matches the target scale.
Although the all the constraint nodes inherit from transform,
they do not actively use any of the attributes from transform.
| Node name | Parents | MFn type | Compatible function sets |
|---|
| scaleConstraint | constraint | kScaleConstraint | kBase
kNamedObject
kDependencyNode
kDagNode
kTransform
kConstraint
kScaleConstraint |
Related nodes
aimConstraint, geometryConstraint, orientConstraint, normalConstraint, parentConstraint, pointConstraint, poleVectorConstraint, tangentConstraint, lookAt
Attributes (20)
constraintParentInverseMatrix, constraintScale, constraintScaleX, constraintScaleY, constraintScaleZ, offset, offsetX, offsetY, offsetZ, restScale, restScaleX, restScaleY, restScaleZ, target, targetParentMatrix, targetScale, targetScaleX, targetScaleY, targetScaleZ, targetWeight
| Long name (short name) | Type | Default | Flags |
|---|
|
target
(tg)
| compound | n/a |      |
|
| targetScale
(ts)
| double3 | | | |
| targetScaleX
(tsx)
| double | 1.0 | | |
| | targetScaleY
(tsy)
| double | 1.0 | | |
| | targetScaleZ
(tsz)
| double | 1.0 | | |
|
|
| targetParentMatrix
(tpm)
| matrix | identity | | |
|
| targetWeight
(tw)
| double | 1.0 |  | |
|
|
constraintParentInverseMatrix
(cpim)
| matrix | identity | |
|
|
offset
(o)
| double3 | | |
|
|
|
|
|
constraintScale
(cs)
| double3 | | |
|
| constraintScaleX
(csx)
| double | 1.0 | | |
|
| constraintScaleY
(csy)
| double | 1.0 | | |
|
| constraintScaleZ
(csz)
| double | 1.0 | | |
|
|
restScale
(rs)
| double3 | | |
|
| restScaleX
(rsx)
| double | 1.0 | | |
|
| restScaleY
(rsy)
| double | 1.0 | | |
|
| restScaleZ
(rsz)
| double | 1.0 | | |
|