Managing visual representations of molecules and systems within molecular modeling software can often be a challenge. How do you control the visibility of specific components, identify key nodes, or simplify an intricate model for presentations or analysis? Thankfully, in the SAMSON platform, the Light attributes in the Node Specification Language (NSL) offer a clear solution to this recurrent problem. Here’s how they work and how you can use them to streamline your workflow.
What are Light Attributes?
The light attribute space (short name: li) in SAMSON allows you to manage nodes specifically related to lights in a molecular model. What’s particularly useful here is that you can tailor the appearance and behavior of light nodes through a set of well-defined controls. These attributes make it easier for molecular modelers to focus on relevant details, presenting their work more effectively.
For example, say you are preparing a model for a presentation and only want to display certain lights or hide others. The various light attributes provide specific tools to do so with precision and simplicity. Here’s a breakdown of the main attributes to help you immediately improve your modeling experience.
Dive into the Key Attributes
| Attribute Name | Short Name | Description | Example Usage |
|---|---|---|---|
| hidden | h |
Controls whether the light node is hidden (true) or visible (false). |
li.h, not li.h |
| visible | v |
Determines if the light node is currently visible (true) or not (false). |
li.v, not li.v |
| name | n |
Specifies or queries the name of the light nodes. Useful for identifying specific nodes in complex models. | li.n "A", li.n "L*" |
| selectionFlag | sf |
Indicates if the light node is part of a selection (true) or not (false). |
li.sf false, li.sf |
| visibilityFlag | vf |
Determines whether the visibility of the light node is controlled by its visibility flag. | li.vf, li.vf false |
| selected | — | Specifies whether the light node is selected (true) or not (false). |
li.selected, not li.selected |
Practical Applications
Understanding and using these attributes opens up a variety of possibilities:
- Focus your analysis: Temporarily hide extraneous lights using the
hiddenattribute to declutter your visual representation. - Effortless selection: Use
selectionFlagandselectedattributes to isolate specific light nodes for further investigation or modification. - Streamline presentations: By assigning names using the
nameattribute, you can quickly identify and highlight relevant lighting configurations for your audience.
Conclusion
Light attributes in SAMSON’s NSL provide molecular modelers with a high degree of control over the visual elements of their models. With tools such as hidden, visible, and selectionFlag, you can efficiently customize your working environment and enhance the clarity of your presentations.
For a deeper dive into this topic and to learn more about specific examples, visit the original documentation page: Light Attributes Documentation.
SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON at samson-connect.net.