Streamline Molecular Editing with SAMSON’s Move Editors

Molecular modeling can be a complex process, often requiring precise manipulations of molecular structures and objects. When you need to reposition, rotate, or distribute specific structures in your molecular design workflow, SAMSON’s Move Editors come to the rescue. This feature simplifies spatial adjustments while ensuring accuracy, making it an indispensable tool for researchers and molecular modelers.

The Benefit of Move Editors

For molecular modelers, one recurrent challenge is efficiently manipulating objects such as atoms, molecules, labels, meshes, or even lights. Whether aligning molecular components, editing dihedral angles, or rotating around specific axes, precision is key. SAMSON’s Move Editors provide tailored solutions for these challenges by offering three main tools:

  • Displacer Move Editor: Simplifies displacement in the camera plane (shortcut: D).
  • Local Move Editor: Allows translations and rotations along the principal axes of selected objects (shortcut: M).
  • Global Move Editor: Enables movements along the global XYZ axes (shortcut: K).

This blog post will focus on the Local Move Editor, an incredibly powerful tool to manipulate molecular structures with precision and ease.

How to Use the Local Move Editor

The Local Move Editor is designed to let users perform translations and rotations based on the principal axes of the selected object. Let’s explore how to use it effectively:

1. Translate Objects

Want to move selected atoms or molecules in SAMSON? With the Local Move Editor:

  1. Select the group of atoms or structure you want to move. Use tools like the rectangle selection editor for convenient group selection.
  2. Press the left mouse button on the central translation widget (the cross with arrows) and drag to translate in the desired direction.
  3. If you need snapping for precision, enable it in the top-left corner of the viewport and set the desired step size (e.g., 0.5Å).

Translating atoms using the local move editor

2. Rotate Objects Around Principal Axes

Perform free or precise rotations on molecular selections:

  1. Click and drag the side rotation widgets (curved arrows) to rotate around the object’s principal axes.
  2. If you want precision, enable rotational snapping (e.g., 10° increments) in the viewport’s quick access menu.

Rotating atoms using the local move editor

3. Rotate Freely with the Trackball

The trackball widget offers flexible, free movement of your selection:

  1. Click on the spherical trackball widget and drag to rotate in any direction.
  2. Release the mouse to confirm your adjustments or press Esc to undo.

Using the trackball for free rotation

Taking Precision to the Next Level

For exact adjustments, SAMSON also allows you to right-click or use Ctrl/Cmd + left-click on any rotation or translation widget to enter specific values. These features enable advanced alignments and perfect configurations tailored to your workflow.

Conclusion

The Local Move Editor in SAMSON offers a robust solution for precise manipulation of molecular structures. Its intuitive tools for translation, axis-specific rotation, and free trackball movement provide a versatile approach to molecular modeling. If you regularly work on complex molecular structures, SAMSON’s Move Editors can save time while ensuring accuracy. To dive deeper into these functionalities and explore additional Move Editors, visit the original documentation page at https://documentation.samson-connect.net/users/latest/moving-objects/.

Note: SAMSON and all SAMSON Extensions are free for non-commercial use. Discover more and get SAMSON for your molecular modeling needs at SAMSON Connect.

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