# `BB.TUI.Viz.RobotScene`
[🔗](https://github.com/mcass19/bb_tui/blob/v0.3.0/lib/bb/tui/viz/robot_scene.ex#L1)

Builds an `ExRatatui.ThreeD.Scene` from a `BB.Robot` topology and live joint
positions, running forward kinematics.

The robot is Z-up (URDF); the whole tree is wrapped in a -90°-about-X root frame
so it renders in the engine's Y-up conventions. Pure: `(robot_struct, positions)`
in, `Scene` out.

# `build`

```elixir
@spec build(struct(), %{required(atom()) => number()}, keyword()) ::
  ExRatatui.ThreeD.Scene.t()
```

Builds the 3D scene for `robot` at the given joint `positions`.

Options: `:lights` and `:background` override the defaults.

# `default_camera`

```elixir
@spec default_camera() :: ExRatatui.ThreeD.Camera.t()
```

A sensible default orbit camera for the arm.

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*Consult [api-reference.md](api-reference.md) for complete listing*