use std::sync::Arc;
use std::collections::HashMap;
use std::hash::Hash;
use crate::canvas::*;
use crate::canvas::managed::shader::dynamic_vertex::RuntimeVertexDef;
use crate::canvas::managed::handles::{CanvasTextureHandle, CanvasImageHandle, CanvasFontHandle, Handle};
use vulkano::pipeline::vertex::Vertex;
use std::any::Any;
use crate::VertexType;
use winit::event::Event;

/// Trait which may be inherited by objects that wish to be drawn to the screen
pub trait Drawable {
    fn get(&self) -> Vec<VertexType>;
}

/// Trait which may be inherited by objects that wish to receive events
pub trait Eventable<T> {
    fn notify(&mut self, event: &Event<T>) -> ();
}

/// Accumulator for Vectors of VertexTypes
#[derive(Default)]
pub struct CanvasFrame {
    pub map: Vec<VertexType>,
}

impl CanvasFrame {

    /// Push this drawable onto the back of the accumulator
    pub fn draw(&mut self, drawable: &dyn Drawable) {
        for i in drawable.get() {
            self.map.push(i);
        }
    }
}