For molecular modelers, analyzing trajectories and conformational transitions can often feel like piecing together an intricate puzzle. One frequent challenge is revisiting paths – backward. Whether you’re replaying a trajectory in reverse or cycling between crucial conformations, SAMSON’s Play reverse path animation provides a smart solution.
What is the Play Reverse Path Animation?
The Play reverse path animation plays molecular trajectories in reverse. This is perfect if you want to highlight transitions between conformations or examine pathways backwards for better insight. Are you analyzing a single path between two frames? Or perhaps you need to synchronize multiple paths? This feature has you covered, ensuring paths are played coherently in reverse motion.
A particularly useful detail: if there is a mismatch between the number of animation frames and the path frames, SAMSON automatically smooths the path to maintain clarity. Prefer a raw, unsmoothed trajectory? No problem – simply head to the Inspector to disable smoothing.
How to Add and Use It
Here’s how to get started with the Play reverse path animation:
- Choose the path you want to animate in reverse.
- In the Animation panel within the Animator, double-click on the Play reverse path animation effect.
- Voila! The path will now play in reverse between the designated keyframes.
- Adjust and reposition the keyframes as required. This flexibility ensures that you can align the reverse animation with the parameters of your study.
Tip for Customization
Want deeper control over the animation? You can customize the interpolation between frames by tweaking the Easing curve.
Benefits for Molecular Modelers
Molecular modeling often requires detailed analysis of trajectories and transitions. By enabling synchronized backward paths and offering smoothing (or no smoothing) options, this feature makes such tasks efficient. Whether you’re researching ligand binding pathways, protein folding reversals, or any motion-centric investigation, reverse animations offer valuable clarity and utility.
To clearly visualize this in action, take a look at this example animation below, which demonstrates the Play reverse path effect:

It’s worth mentioning that the reverse path relies on the path node structure, which in SAMSON is designed to store trajectory data. By assigning direct animations to these nodes, users can explore conformational changes with enhanced insight.
Conclusion
SAMSON’s Play reverse path animation is a robust tool for revisiting molecular trajectories in reverse for visualization and analysis. Its customization options and synchronization capabilities make it an essential feature for modelers working with molecular dynamics or conformational studies.
To learn more about the Play reverse path animation, including detailed functionality and advanced options, visit the official documentation page.
SAMSON and all SAMSON Extensions are free for non-commercial use. You can download SAMSON from here.
