Struct ViewportInput 

pub struct ViewportInput { /* private fields */ }

Stateful viewport input accumulator.

Maintains pointer and button state across frames and resolves raw ViewportEvents into semantic ActionFrame output.

Frame lifecycle

// --- AppState construction ---
input.begin_frame(ctx);          // prime the accumulator

// --- Per winit window_event ---
input.push_event(translated_event);

// --- RedrawRequested ---
let actions = input.resolve();   // apply to camera / interactions
input.begin_frame(ctx);          // reset for next frame's events

Implementations

impl ViewportInput

pub fn new(bindings: Vec<ViewportBinding>) -> Self

Create a new resolver with the given binding list.

pub fn from_preset(preset: BindingPreset) -> Self

Create a resolver for a named BindingPreset.

pub fn begin_frame(&mut self, ctx: ViewportContext)

Begin a new frame.

Resets per-frame accumulators and records the current viewport context. Call this at the END of each render so it’s ready to accumulate the next batch of events. Also call once during initialisation.

pub fn push_event(&mut self, event: ViewportEvent)

Push a single viewport-scoped event into the accumulator.

pub fn resolve(&self) -> ActionFrame

Resolve accumulated events into an ActionFrame.

This does NOT reset state — call begin_frame for that.

pub fn modifiers(&self) -> Modifiers

Current modifier state.