Struct FrameTime 

pub struct FrameTime {
    pub delta: Duration,
    pub elapsed: Duration,
    pub frame_count: u64,
}

Frame timing information for the app lifecycle.

This is a simplified time struct used by the winit app loop. For more advanced time features (time scale, fixed timestep, etc.), use the Time resource from the main astrelis crate.

Example

use astrelis_winit::app::{App, AppCtx};
use astrelis_winit::{FrameTime, WindowId};
use astrelis_winit::event::EventBatch;
use astrelis_winit::window::WindowBackend;

struct MyApp;

impl App for MyApp {
    fn update(&mut self, _ctx: &mut AppCtx, time: &FrameTime) {
        let dt = time.delta_seconds();
        // Use dt for frame-independent movement
        let _ = dt; // silence unused warning
    }

    fn render(&mut self, _ctx: &mut AppCtx, _window_id: WindowId, _events: &mut EventBatch) {
        // rendering
    }
}

Fields

delta: Duration

Time elapsed since the last frame

elapsed: Duration

Total time elapsed since app start

frame_count: u64

Total number of frames rendered

Implementations

impl FrameTime

pub fn new() -> Self

pub fn delta_seconds(&self) -> f32

Returns delta time in seconds (f32)

pub fn elapsed_seconds(&self) -> f32

Returns elapsed time in seconds (f32)

Trait Implementations

impl Clone for FrameTime

fn clone(&self) -> FrameTime

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FrameTime

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

Formats the value using the given formatter.

impl Default for FrameTime

fn default() -> Self

Returns the “default value” for a type.