When working in molecular modeling, managing the visibility of elements in complex structures is pivotal. SAMSON’s presentation attributes in the Node Specification Language (NSL) allow you to effortlessly control what you see, streamlining your workflow and focusing only on the data that matters.
Why Node Visibility Matters
Visualizing large molecular models can be overwhelming. Imagine searching for a specific atom in a crowded structural model—this can be frustrating and time-consuming. Thankfully, SAMSON enables precise control using visibility-related attributes in the presentation attribute space, making it easier to customize your view.
Presentation Attributes: The Basics
The presentation attribute space is designed to focus solely on customizing the visual elements of nodes. Specifically, it includes attributes like hidden, visible, and their corresponding flags such as visibilityFlag. These attributes give you immense flexibility to toggle display settings for different nodes at any time, ensuring a smooth and efficient modeling process.
Key Attributes for Visibility Management
- Hidden (
pr.h): Allows you to query or set whether a node is hidden. For instance,pr.hensures that only nodes marked as hidden are selected, whilenot pr.hselects everything visible. - Visible (
pr.v): Tracks whether a node is currently visible. You can use expressions likepr.vfor visible nodes ornot pr.vto find all invisible nodes. - Visibility Flag (
pr.vf): Indicates if a node’s visibility is specifically flagged. For instance,pr.vf falsedisables visibility for flagged nodes.
Example Expressions Simplified
These attributes can be combined using logical expressions to filter or operate on specific subsets of nodes.
| Expression | Outcome |
|---|---|
not pr.h |
Returns all nodes that are not hidden. |
pr.v |
Selects nodes that are visible. |
pr.vf false |
Returns nodes where the visibility flag is switched off. |
What Stands Out?
These visibility features don’t just help you visually declutter your workspace; they also pave the way for easier debugging, scene analysis, and personalized visual setups to ensure that nothing distracts you from the task at hand. This simple yet powerful filtering mechanism ensures that you maintain control over even the most intricate molecular designs.
For detailed documentation and additional examples surrounding the presentation attribute space, visit the official SAMSON documentation page: NSL Presentation Attributes Documentation.
SAMSON and all SAMSON Extensions are free for non-commercial use. To get started, download SAMSON at https://www.samson-connect.net.