About Snapshots
A snapshot captures model information that exists at the time the snapshot is created. There are two types of snapshots in Creo Manikin:
Individual manikin snapshot—Captures all the active constraints on the manikin in a specific position within the design scene for one single manikin, and the manikin component positions.
Scene snapshot—Captures all the constraints that apply to the design scene, its components, and all the manikins in the model.
Individual Manikin Snapshot
Scene Snapshot
Scope
One specific manikin
Design scene and all the manikins in the model
Information captured
Transformations of the manikin’s components in relation to its sacrum, representing the posture
DOF (degrees of freedom) lock status between manikin segments
Fix status of manikin segments
Manikin constraints, including Reach and Look At
Translation and rotation matrix relative to the manikin’s initial placement reference, representing the location in the scenario
Transformations of all the manikins’ components
DOF (degrees of freedom) lock status between manikin segments
Fix status of manikin segments
All the constraints that apply to the design scene, its components, and manikin constraints
Persistence
Not persistent
Snapshot is active until you drag a component. An icon indicates the active snapshot
Manikin Tree location
In the Snapshots folder in the relevant manikin node
In the top-level Snapshots folder under Manikin Tree
Drag
Does not appear in the Drag dialog box
Appears in the Drag dialog box when you drag components
The following are a few examples of using individual snapshots.
Climbing a ladder
The manikin starts with a placement connection to the item on which it is standing. You must disable this connection. Climbing each step requires many manipulations, so save each step as a snapshot like step_1, step_2. When you switch between the snapshots, Creo Manikin applies the correct position (translation and rotation relative to the initial placement reference) and posture (transformations of the manikin’s components).
Dependency between manikins
Two manikins are working in the same scene. Manikin A has a Look At constraint looking at manikin B. Individual snapshot are taken to track manikin B’s location. Manikin B’s location in snapshot 2 is different from the location in snapshot 1.
When you switch the snapshot for manikin B is from snapshot 1 to snapshot 2, manikin A’s Look At constraint is disconnected. Yet if you disable the constraint by right-clicking and selecting Disable Constraint, and then re-enable it by right-clicking and selecting Enable Constraint, the constraint is re-connected.
Moving reference
The placement reference for the manikin is the vehicle seat on which it is sitting. Take a snapshot of the original driving position. Move the vehicle seat back and change the hand position on the steering wheel. When you re-apply the snapshot, the manikin’s transformations are re-calculated in relation to the sacrum, so the manikin is sitting correctly in the new seat position.
There might be discrepancies between the scene snapshot and individual manikin snapshots. Yet applying a scene snapshot does not change the content of an individual snapshot, and applying an individual snapshot does not change the content of a scene snapshot. If you replace a manikin, the new manikin will have the same snapshots as the manikin you replaced.
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