orthographic/
orthographic.rs

1//! Shows how to create a 3D orthographic view (for isometric-look games or CAD applications).
2
3use bevy::{camera::ScalingMode, prelude::*};
4
5fn main() {
6    App::new()
7        .add_plugins(DefaultPlugins)
8        .add_systems(Startup, setup)
9        .run();
10}
11
12/// set up a simple 3D scene
13fn setup(
14    mut commands: Commands,
15    mut meshes: ResMut<Assets<Mesh>>,
16    mut materials: ResMut<Assets<StandardMaterial>>,
17) {
18    // camera
19    commands.spawn((
20        Camera3d::default(),
21        Projection::from(OrthographicProjection {
22            // 6 world units per pixel of window height.
23            scaling_mode: ScalingMode::FixedVertical {
24                viewport_height: 6.0,
25            },
26            ..OrthographicProjection::default_3d()
27        }),
28        Transform::from_xyz(5.0, 5.0, 5.0).looking_at(Vec3::ZERO, Vec3::Y),
29    ));
30
31    // plane
32    commands.spawn((
33        Mesh3d(meshes.add(Plane3d::default().mesh().size(5.0, 5.0))),
34        MeshMaterial3d(materials.add(Color::srgb(0.3, 0.5, 0.3))),
35    ));
36    // cubes
37    commands.spawn((
38        Mesh3d(meshes.add(Cuboid::default())),
39        MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
40        Transform::from_xyz(1.5, 0.5, 1.5),
41    ));
42    commands.spawn((
43        Mesh3d(meshes.add(Cuboid::default())),
44        MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
45        Transform::from_xyz(1.5, 0.5, -1.5),
46    ));
47    commands.spawn((
48        Mesh3d(meshes.add(Cuboid::default())),
49        MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
50        Transform::from_xyz(-1.5, 0.5, 1.5),
51    ));
52    commands.spawn((
53        Mesh3d(meshes.add(Cuboid::default())),
54        MeshMaterial3d(materials.add(Color::srgb(0.8, 0.7, 0.6))),
55        Transform::from_xyz(-1.5, 0.5, -1.5),
56    ));
57    // light
58    commands.spawn((PointLight::default(), Transform::from_xyz(3.0, 8.0, 5.0)));
59}
orthographic/orthographic.rs

orthographic/
orthographic.rs
