Molecular modelers often face the challenge of effectively rearranging and visualizing specific groups of atoms or meshes during simulations. Whether you’re refining structural insights or preparing presentation-ready animations, the need to “undock” specific components without disrupting the entirety of your molecular system is a frequent pain point. SAMSON’s Undock animation provides an intuitive solution to this challenge, enabling streamlined atomic movement with precision.
What is the Undock Animation?
The Undock animation effect in SAMSON allows users to separate groups of atoms, meshes, or structural nodes from their current positions, which are considered “docked”. These components are automatically displaced to new positions that are computed away from their initial spaces. This makes it particularly useful for presentations, simulations, or to enhance clarity during analysis.
This feature enables molecular modelers to highlight specific interactions or structures, solve spatial overlap issues, or set up systems for further exploration. The automatic positioning saves time while maintaining accuracy in the movement.
How to Set It Up
Getting started with the Undock animation is straightforward:
- Select at least two structural nodes or meshes in your document. The first node will serve as the static receptor, while the remaining nodes or meshes will be the elements to undock. If you need multiple receptors, simply create a folder containing those receptor nodes and select the folder as the initial node.
- Next, double-click on the Undock animation effect in the Animation panel of SAMSON’s Animator.
- The system automatically calculates the undocking movement between two keyframes. You can subsequently move the keyframes to adjust the animation timeline as needed.
- The default amplitude of this undocking movement is computed upon animation creation. However, you can fine-tune this parameter by inspecting the animation and modifying its properties in the Inspector.
Tips for Effective Use
- Combine with Other Animations: Improve storytelling in presentations by combining the Undock and Dock animations. For example, undock groups first to highlight interactions, then return them to their docked positions to demonstrate real-world occurrences or bindings.
- Play with Easing Curves: Modify how parameters are interpolated to create smoother or more dynamic motions by changing the Easing curve in your animation.
- Keyframe Adjustments: Don’t forget that you can always move keyframes to customize timing and synchronization with adjacent actions in the animation timeline.
Example Use Case
Let’s consider an example: You’ve prepared a molecular visualization with multiple receptor-ligand binding sites. To simplify your presentation, you may want to undock the ligands temporarily, allowing viewers to better see binding site details before reintegrating the ligands with a Dock animation. This approach not only improves clarity but also keeps the simulation engaging.
Below is a visual example showcasing how the Undock animation effect elegantly undocks the chosen elements:

Customization for Precision
Beyond default settings, SAMSON offers molecular modelers flexibility in personalizing animations:
- Use the Inspector to redefine the amplitude of movements for tailored visualizations.
- Fine-tune interpolation parameters for enhanced realism or to suit specific scientific objectives.
The combination of simplicity and versatility makes the Undock animation a valuable tool in any molecular modeler’s toolkit.
To learn more about the Undock animation and explore its full potential, consult the official documentation page here.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can get SAMSON at https://www.samson-connect.net.
