1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

// Demonstrated shapes respecting render layers
// Adapted directly from https://github.com/bevyengine/bevy/blob/main/examples/3d/render_to_texture.rs

use bevy::prelude::*;
use bevy_vector_shapes::prelude::*;

mod gallery_3d;
use gallery_3d::gallery;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(ShapePlugin::default())
        .insert_resource(ClearColor(Color::DARK_GRAY))
        .insert_resource(Msaa::Off)
        .add_systems(Startup, setup)
        .add_systems(Update, (draw_shapes, draw_canvas))
        .run();
}

fn setup(mut commands: Commands, mut images: ResMut<Assets<Image>>) {
    let mut config = CanvasConfig::new(256, 256);
    config.clear_color = ClearColorConfig::Custom(Color::WHITE * 0.5);
    let (_, _entity) = commands.spawn_canvas(images.as_mut(), config);

    commands.spawn(Camera3dBundle {
        transform: Transform::from_xyz(0., 0., 16.).looking_at(Vec3::ZERO, Vec3::Y),
        ..default()
    });
}

fn draw_canvas(time: Res<Time>, mut painter: ShapePainter, canvas: Query<(Entity, &Canvas)>) {
    let (canvas, _) = canvas.single();
    painter.rotate_z(time.elapsed_seconds().sin());
    painter.set_canvas(canvas);
    painter.color = Color::WHITE * 2.0;
    painter.translate(Vec3::NEG_Y * 12.0 * 16.0);
    painter.thickness = 16.0;

    for _ in 0..12 {
        painter.translate(Vec3::Y * 32.0);
        painter.line(Vec3::NEG_X * 256.0, Vec3::X * 256.0);
    }
    painter.reset();
}

fn draw_shapes(time: Res<Time>, mut painter: ShapePainter, canvas: Query<(Entity, &Canvas)>) {
    let (_, canvas) = canvas.single();
    painter.texture = Some(canvas.image.clone());
    painter.translate(Vec3::NEG_Y * 2.0);

    gallery(painter, time.elapsed_seconds(), 0..10);
}