Have you ever wanted to seamlessly focus on specific regions of your molecular models as they move and transform during animations? Molecular modelers and researchers often struggle to visually follow dynamic simulations, especially when examining the behavior of specific groups of atoms in a complex system. Fortunately, SAMSON’s Follow Atoms animation solves this challenge by allowing the camera to continuously follow selected atoms throughout the animation.
What Is the ‘Follow Atoms’ Animation?
The Follow Atoms animation ensures that the camera target and position remain locked to the selected atoms while maintaining a constant distance. This functionality allows researchers to focus on specific regions of a molecular model without manually readjusting views, making it an excellent tool for tracking the intricate dynamics of a system.
Whether you’re studying large protein conformational changes or visualizing the interactions of a specific ligand in a binding site, this feature enables you to follow the action naturally without distractions. Additionally, in animations where molecule trajectories are of interest, it helps focus attention on the precise molecular motion being analyzed.
How to Add the Animation
Here’s a quick step-by-step guide to using the Follow Atoms animation effectively:
- Select the atoms you want the camera to follow.
- Orient the camera view so that your visual focus aligns with your needs.
- In the Animator’s Track view, choose a start frame for your animation.
- Double-click on the ‘Follow Atoms‘ effect in the Animation panel. You’ll notice that the target point given to the camera now tracks the geometric center of the selected atoms.
- Define an end frame so that the duration of the animation aligns with your presentation or analysis needs.
As the animation runs, the camera position adjusts dynamically, preserving the vector between the camera and the target atoms. This powerful feature keeps the frame centered while letting you focus on the molecular system’s dynamics without interruptions.

Fine-Tune Your Camera Movement
One of the strengths of the Follow Atoms animation is its flexibility. You can always:
- Adjust the camera position using the animation controllers, while ensuring that the target point remains at the geometric center of the selected atoms.
- Move the start and end frames of the animation as needed to match trajectory durations or analysis periods.
- Inspect and configure additional animation properties. For instance, toggle the Keep camera upwards option to align the camera’s behavior with the on/off status of the grid view.
Useful Tip for Efficiency
By default, camera animations are applied to the active camera. However, if different cameras are required for various perspectives or analyses, you can inspect the animation and modify the Apply to active camera option. This flexibility ensures that your work remains adaptable to different use cases and scenarios.
Conclusion
The Follow Atoms animation streamlines the process of tracking molecular changes, making it easier to visualize and focus on specific regions of interest in your simulations. This tool is not only effective in analyzing dynamic interactions but also in creating impactful presentations that highlight key molecular features and movements.
For a detailed guide, check the original documentation page.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Get SAMSON for free at https://www.samson-connect.net.
