Understanding Animation Attributes in SAMSON’s Node Specification Language.

For molecular modelers, efficiently navigating and controlling animation attributes within a design platform like SAMSON can save significant time and effort. SAMSON’s Node Specification Language (NSL) provides a robust set of animation-specific attributes, offering an elegant way to manage animation-related nodes. In this post, we’ll explore animation attributes and how to use them effectively.

What Are Animation Attributes?

Animation attributes reside within the animation attribute space (short name: an). These attributes specifically address animation nodes, helping you control aspects like visibility, selection, naming, and flags. By using these attributes, molecular modelers can streamline their workflows, especially when dealing with complex animations.

Key Animation Attributes at a Glance

Here’s a basic overview of vital animation attributes:

Attribute name	Short name	Possible values	Examples
hidden	`h`	`true`, `false`	`an.h` or `not an.h`
name	`n`	strings in quotes	`an.n "Example"` or `an.n "Anim*"`
selected	(no short name)	`true`, `false`	`an.selected` or `not an.selected`
selectionFlag	`sf`	`true`, `false`	`an.sf` or `an.sf false`
visibilityFlag	`vf`	`true`, `false`	`an.vf` or `an.vf false`
visible	`v`	`true`, `false`	`an.v` or `not an.v`

A Closer Look at Critical Attributes

These attributes, inherited from the node attribute space, offer flexibility:

hidden: Use hidden to directly control whether a node is concealed (e.g., an.h).
name: Assign or filter animations by a string name (e.g., an.n "AnimationName").
visible: Tweak visibility status using visible or its shorthand flag v. This is useful for toggling display elements in animations.

How to Use Animation Attributes in Practice

Consider a scenario: You want to filter only visible animation nodes that are named with a specific pattern, such as animations starting with “L.” This can be accomplished using expressions like an.v and an.n "L*". For animations that are hidden but also marked selected, an equivalent expression might look like not an.v and an.selected.

The ability to mix and match such conditions can drastically reduce time spent manually searching for nodes. Using NSL expressions inspires a more precise and automated approach to managing molecular animations.

Conclusion

The animation attribute space in SAMSON is a powerful feature for molecular modelers managing animation nodes. For detailed explanations and complete examples, make sure to visit the official documentation page.

SAMSON and all SAMSON Extensions are free for non-commercial use. You can download the platform at SAMSON-Connect.