Struct TurntableController 

pub struct TurntableController {
    pub angular_velocity: f32,
    pub tilt: f32,
    pub azimuth: f32,
}

Continuously orbits the camera around the Z axis at a fixed elevation.

Each frame, advance the azimuth by angular_velocity * dt and apply the result to the camera. The orbit distance and center are left unchanged.

let mut turntable = TurntableController::from_camera(&camera, 0.5);
// in the render loop:
turntable.update(dt, &mut camera);

Fields

angular_velocity: f32

Angular velocity in radians per second. Positive rotates counter-clockwise when viewed from above (Z-up world).

tilt: f32

Pitch angle in radians (angle from the vertical axis). A value of PI/4 places the eye 45 degrees from the top. Matches the convention used by Camera::orbit where Quat::from_rotation_x(tilt) is the pitch.

azimuth: f32

Current azimuth angle in radians.

Implementations

impl TurntableController

pub fn new(angular_velocity: f32, tilt: f32) -> Self

Create a turntable that starts at azimuth zero.

tilt is the pitch angle in radians: PI/2 looks from the side (horizontal), smaller values look more from above.

pub fn from_camera(camera: &Camera, angular_velocity: f32) -> Self

Create a turntable that continues from the camera’s current orientation.

The azimuth and tilt are extracted from the camera’s current orientation so the orbit continues smoothly from wherever the user left off.

pub fn update(&mut self, dt: f32, camera: &mut Camera)

Advance the turntable by dt seconds and write the new orientation into camera. Distance and center are unchanged.

Trait Implementations

impl Clone for TurntableController

fn clone(&self) -> TurntableController

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TurntableController

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.