For molecular modelers, efficiently annotating and managing animations can significantly enhance workflows, especially when dealing with complex systems. The Animation Attributes in SAMSON’s Node Specification Language (NSL) provide tools to optimize how molecular animations are defined, interacted with, and visualized. If you’ve ever struggled with toggling visibility, selecting specific animation nodes for analysis, or customizing their behaviors, this guide is for you.
An Overview of Animation Attributes
Animation attributes in SAMSON belong to the animation attribute space, which uses the short name an. These attributes apply specifically to animation nodes and facilitate precise control over their properties without interfacing with irrelevant nodes.
What makes this powerful is how these attributes inherit from general node attributes, with a handful of targeted refinements for animation-specific needs. Whether you’re selecting, hiding, or filtering animations, an-prefix attributes bring clarity to your molecular modeling process.
Key Animation Attributes Every Molecular Modeler Should Know
Below are the primary animation attributes and their functionalities, along with practical examples:
- Hidden (
an.h): This attribute helps decide whether an animation node is visible on the screen or not. Possible values aretrueorfalse. For example: an.h: Marks the animation node as hidden.not an.h: Ensures the node is visible.- Name (
an.n): When you need to quickly identify nodes, this attribute accepts string values. Use quotes around the search string. Examples: an.n "A": Matches an animation node named “A”.an.n "L*": Matches nodes with names starting with “L”.- Selection Flag (
an.sf): This attribute is ideal for controlling selection states programmatically. Usean.sfto check if a selection flag istrueorfalse. - Visibility Flag (
an.vf): Similar to the hidden attribute, this determines the visibility state of an animation node. For instance,an.vf falseexplicitly sets the node’s visibility flag tofalse. - Visible (
an.v): This attribute directly evaluates whether a node is currently visible. Likean.h, its values are eithertrueorfalse.
Why Use Animation Attributes?
Animation attributes streamline otherwise tedious operations. For instance, you can programmatically hide intermediate animation nodes during simulation runs while keeping certain keyframes visible for reporting purposes. Similarly, filtering nodes by an.n enables you to isolate specific animations to analyze their effects or dynamically update nodes during a simulation pipeline.
This focus on precision and control minimizes the clutter in complex systems, allowing molecular animations to become tools for discovery, rather than distractions. Whether you’re preparing materials for a publication or iterating through workflows, mastering these tools will reduce both time and errors.
Learn More
Explore the full range of animation attributes and their technical documentation in greater detail here: Animation Attributes Documentation.
SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON at www.samson-connect.net.