Modal Lattice Resolution is a Blender add-on from Tyo79 for creating and adjusting lattices without leaving the 3D viewport. With a Mesh, Curve, Surface, Grease Pencil, Text, or a set of selected objects active, pressing the 'L' keymap builds a lattice fitted to the object's location, scale, and rotation. Blender then switches to the lattice's Edit Mode and starts a modal for tweaking its settings.
During the modal, you can adjust the resolution on the U, V, and W axes and switch between Linear, Cardinal, Catmull-Rom, and Bspline interpolation modes. Ctrl, Alt, and Shift combined with scroll handle the three axes, while numpad keys jump to presets such as 2_2_2 or 3_3_3. Additional controls cover a Popup Panel, an Outside Toggle, and a Front Toggle, and the Status Bar lists every shortcut as you work.
If your active object is already a lattice, the 'L' keymap skips creation and runs the modal directly. The keymap and the modal color can both be changed in the add-on's User Preferences panel. It's compatible with Blender 4.2 LTS and newer and requires no special permissions.