Understanding Render Preset Attributes in SAMSON

When modeling complex molecular systems, clarity of visualization can make or break productivity. SAMSON’s Node Specification Language (NSL) offers a powerful tool to streamline molecular visualization through render preset attributes. In this post, we’ll dive into the essentials of render preset attributes, explaining how these can help molecular designers fine-tune what they see and how they work. If you’re struggling with organizing and quickly locating customized visualization settings, this guide will give you actionable insights.

What Are Render Preset Attributes?

Render preset attributes are part of the renderPreset attribute space in SAMSON’s NSL. These attributes are used exclusively with render preset nodes to influence how molecules are visually rendered. Using these attributes, you can interact with your molecular models more intuitively by assigning meaningful properties to rendering nodes.

The renderPreset attribute space comes with a short name: rp. This makes it quick and easy to specify and interact with render preset attributes in NSL expressions. Some of the essential attributes include:

• name: Specifies the name of the render preset.
• selected: Indicates whether the render node is selected.
• selectionFlag: Defines whether the selection flag is active for the render preset node.

Key Attributes Explained

1. The name Attribute

Inherited from node attributes, the name attribute helps label render preset nodes. It accepts strings enclosed in quotes. Here’s how you can use it:

This assigns the name “A” to a render preset node. Alternatively, you can work with patterns:

This example searches for all nodes beginning with the letter “L.” Naming attributes are essential for organizing complex projects.

2. The selected Attribute

This Boolean attribute indicates whether a render preset node is selected. While it lacks a short name (you must write it as rp.selected), it’s still highly effective for targeted interactions:

You can also use “not” to filter out unselected nodes:

3. The selectionFlag Attribute

Also a Boolean attribute, selectionFlag determines whether the selection flag on a render preset node is active. This attribute features the short name sf, making calls more concise:

To toggle it off, use:

Why Are These Attributes Important?

Managing render presets effectively can save significant time when visualizing, analyzing, and sharing molecular designs. For instance, if you’re working in a large team, assigning meaningful names to render presets using the name attribute ensures everyone understands the visualization context at a glance. Similarly, using Boolean filters like selected and selectionFlag allows you to refine visual outputs to match your current goals.

No matter your specific task, these attributes offer streamlined solutions for customizing how your molecule models appear, enabling clearer communication and faster iterative development.

To get started or explore more examples, visit the full documentation page at Render Preset Attributes.

*Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON from here.