Molecular modeling can be challenging, especially when dealing with the complexity of different node types, attributes, and their interactions. For users of SAMSON, understanding the mesh attribute space in the Node Specification Language (NSL) is essential for effectively working with mesh nodes. Whether you are trying to identify certain features or fine-tune visibility, knowing how to leverage these attributes can save you time and improve your workflow.
What are Mesh Attributes?
In SAMSON’s NSL, mesh attributes are properties tied specifically to mesh nodes. These attributes lie within the mesh attribute space (short name: me) and allow you to query or define the characteristics of mesh nodes. These attributes are instrumental when dealing with materials, names, visibility flags, and more.
Inherited Attributes
The beauty of the mesh attribute space is that many of its attributes are inherited from node attributes. However, they are tailored specifically for applications involving meshes. Here’s a quick overview of some of the most relevant attributes:
| Attribute Name | Short Name | Values | Example Expression |
|---|---|---|---|
| hasMaterial | hm |
true, false |
me.hmnot me.hm |
| hidden | h |
true, false |
me.hnot me.h |
| visible | v |
true, false |
me.vnot me.v |
Common Tasks with Mesh Attributes
Let’s explore some ways mesh attributes can help you in your modeling tasks:
- Filtering Materials: Use the
hasMaterial(hm) attribute to identify or exclude meshes with attached materials. For instance,me.hmreturns all meshes with materials, whilenot me.hmexcludes them. - Controlling Visibility: The
hidden(h) andvisible(v) attributes allow you to customize your workspace by hiding or exposing specific meshes. Combining these with logical operators can help you fine-tune your scene. - Name-based Queries: The
name(n) attribute supports string-based queries for mesh identification. For example,me.n "A"selects meshes named “A”, andme.n "L*"uses wildcards to select meshes matching a pattern.
Why Mesh Attributes Simplify Workflows
SAMSON’s NSL provides a language that is both concise and powerful for working with meshes. By mastering mesh attributes and leveraging short names like v or hm, users significantly reduce the effort needed to interact with molecular data. This can lead to a more efficient workflow, especially in projects involving extensive mesh structures.
To explore the full documentation about mesh attributes alongside detailed examples, visit this page.
SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON now at https://www.samson-connect.net.