Visualization-tab state: the orbit camera and render mode for the 3D robot view.
camera is nil until first used; BB.TUI.State.viz_camera/1 falls back to
BB.TUI.Viz.RobotScene.default_camera/0 so a fresh state still renders.
render_mode is the ExRatatui.Widgets.Viewport3D mode. :auto (the default)
renders crisp pixel graphics on terminals that speak a graphics protocol
(Kitty — Ghostty/WezTerm/Kitty; Sixel — WezTerm) and falls back to :braille
over CellSession/SSH and unsupported terminals. The explicit pixel protocols
(:kitty, :sixel, :iterm2) and cell-blit modes (:half_block, :braille,
:ascii) can also be selected by cycling with m.
Summary
Types
@type render_mode() ::
:auto | :kitty | :sixel | :iterm2 | :half_block | :braille | :ascii
@type t() :: %BB.TUI.State.Viz{ camera: ExRatatui.ThreeD.Camera.t() | nil, render_mode: render_mode() }