piston2d-graphics_tree 0.32.0

A 2D graphics backend for Piston-Graphics that stores and optimizes commands
Documentation 
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extern crate piston_window;
extern crate graphics_tree;
extern crate image as im;

use piston_window::*;
use graphics_tree::{GraphicsTree, TextureBuffer};

fn main() {
    let mut window: PistonWindow =
        WindowSettings::new("graphics_tree: image", [512; 2])
        .exit_on_esc(true)
        .build()
        .unwrap();

    let ref mut graphics_tree = GraphicsTree::new();

    let tex = im::open("assets/rust.png").unwrap().to_rgba().into();
    let ref mut tx_buffer = TextureBuffer::new(TextureContext {
        factory: window.factory.clone(),
        encoder: window.factory.create_command_buffer().into()
    });

    while let Some(e) = window.next() {
        window.draw_2d(&e, |c, g, _| {
            if graphics_tree.is_empty() {
                clear([1.0; 4], graphics_tree);
                image(&tex, c.transform, graphics_tree);
            }

            graphics_tree.draw(tx_buffer, g);
        });
    }
}