Struct CameraController 

pub struct CameraController;

Stateless helper that maps InputEvents to camera mutations.

All methods are associated functions (no self) because the controller carries no state – it is a pure function namespace. The actual state lives in Camera and CameraConstraints.

Implementations

impl CameraController

pub fn zoom( camera: &mut Camera, factor: f64, cursor_x: Option<f64>, cursor_y: Option<f64>, constraints: &CameraConstraints, )

Zoom by a multiplicative factor (>1 zooms in, <1 zooms out).

Non-finite, zero, and negative factors are silently ignored.

pub fn rotate( camera: &mut Camera, delta_yaw: f64, delta_pitch: f64, constraints: &CameraConstraints, )

Rotate the camera by delta yaw and delta pitch (radians).

Pitch is clamped to CameraConstraints; yaw wraps freely (normalized to [-?, ?] by the setter).

pub fn pan( camera: &mut Camera, dx: f64, dy: f64, cursor_x: Option<f64>, cursor_y: Option<f64>, )

Pan the camera by a screen-space pixel delta.

pub fn handle_event( camera: &mut Camera, event: InputEvent, constraints: &CameraConstraints, )

Dispatch an InputEvent to the appropriate handler.

Touch events are ignored here — they should be routed through the GestureRecognizer first, which produces derived Pan/Zoom/Rotate events.