For molecular modelers, capturing the motion of specific atoms or molecular structures in a dynamic system can be a crucial task. Whether you’re analyzing trajectories or illustrating complex behaviors in presentations, keeping the camera centered on moving atoms is often a key challenge. SAMSON provides an intuitive solution through its ‘Follow Atoms’ animation feature, helping you seamlessly highlight areas of interest in your molecular system.
The Problem: Keeping Your Eye on the Motion
When analyzing large molecular systems, particular regions of interest may shift significantly over time. Imagine investigating the behavior of a ligand binding site while simulating protein dynamics. Keeping the camera focused on the geometric center of a moving site can be tedious and error-prone when done manually, especially if you’re creating animations for colleagues or publications. This can lead to lost efficiency or incomplete visual storytelling.
The Solution: ‘Follow Atoms’ Animation
The ‘Follow Atoms’ animation in SAMSON ensures that the camera continuously follows selected atoms during an animation. This means the camera target (the geometric center of the selected atoms) and position adjust automatically to maintain a consistent perspective as the system moves dynamically.
Here’s how the ‘Follow Atoms’ animation operates:
- The camera synchronizes its focus with the geometric center of the atoms you’ve selected when the animation begins.
- The distance between the camera and the observed atoms remains constant throughout the animation, ensuring smooth transitions and consistency.
- You can set start and end frames to precisely define the timeline of animations.
Get Started with the ‘Follow Atoms’ Animation
Follow these steps to incorporate this animation into your project:
- Select the atoms you want to follow and orient the camera to the view angle you desire.
- Choose the start frame in the Animator’s Track view.
- In the Animation panel, double-click on the ‘Follow Atoms’ effect.
- Adjust the animation’s start and end frames to cover the portion of the trajectory you need.
- Fine-tune camera positions using animation controllers to emphasize specific details.

Customization Options
The ‘Follow Atoms’ animation lets you tweak properties for personalized results:
- By default, the animation applies to the active camera. You can modify this behavior by inspecting the animation and toggling the ‘Apply to active camera’ option.
- The ‘Keep camera upwards’ option lets you adjust how the animation functions depending on grid settings in the view.
- For further customization, explore the controllers to modify the position and vector of the camera while maintaining a consistent target point on the atoms of interest.
Why Use ‘Follow Atoms’?
This tool is indispensable when visually analyzing trajectories with mobile regions of interest. Whether you’re tracking small molecules, functional groups, or specific residues inside a protein, the ‘Follow Atoms’ animation simplifies the task, leaving you more time to focus on understanding your results and presenting high-quality visual content.
Learn more about this feature in the official documentation at https://documentation.samson-connect.net/users/latest/animations/follow-atoms/.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Download SAMSON at https://www.samson-connect.net.
