25bfa80e60
# Objective Yet another PR for migrating stuff to required components. This time, cameras! ## Solution As per the [selected proposal](https://hackmd.io/tsYID4CGRiWxzsgawzxG_g#Combined-Proposal-1-Selected), deprecate `Camera2dBundle` and `Camera3dBundle` in favor of `Camera2d` and `Camera3d`. Adding a `Camera` without `Camera2d` or `Camera3d` now logs a warning, as suggested by Cart [on Discord](https://discord.com/channels/691052431525675048/1264881140007702558/1291506402832945273). I would personally like cameras to work a bit differently and be split into a few more components, to avoid some footguns and confusing semantics, but that is more controversial, and shouldn't block this core migration. ## Testing I ran a few 2D and 3D examples, and tried cameras with and without render graphs. --- ## Migration Guide `Camera2dBundle` and `Camera3dBundle` have been deprecated in favor of `Camera2d` and `Camera3d`. Inserting them will now also insert the other components required by them automatically.
68 lines
2.1 KiB
Rust
68 lines
2.1 KiB
Rust
//! Uses two windows to visualize a 3D model from different angles.
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use bevy::{prelude::*, render::camera::RenderTarget, window::WindowRef};
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fn main() {
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App::new()
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// By default, a primary window gets spawned by `WindowPlugin`, contained in `DefaultPlugins`
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.add_plugins(DefaultPlugins)
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.add_systems(Startup, setup_scene)
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.run();
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}
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fn setup_scene(mut commands: Commands, asset_server: Res<AssetServer>) {
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// add entities to the world
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commands.spawn(SceneRoot(
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asset_server.load(GltfAssetLabel::Scene(0).from_asset("models/torus/torus.gltf")),
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));
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// light
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commands.spawn((
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DirectionalLight::default(),
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Transform::from_xyz(3.0, 3.0, 3.0).looking_at(Vec3::ZERO, Vec3::Y),
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));
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let first_window_camera = commands
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.spawn((
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Camera3d::default(),
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Transform::from_xyz(0.0, 0.0, 6.0).looking_at(Vec3::ZERO, Vec3::Y),
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))
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.id();
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// Spawn a second window
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let second_window = commands
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.spawn(Window {
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title: "Second window".to_owned(),
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..default()
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})
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.id();
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let second_window_camera = commands
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.spawn((
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Camera3d::default(),
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Transform::from_xyz(6.0, 0.0, 0.0).looking_at(Vec3::ZERO, Vec3::Y),
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Camera {
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target: RenderTarget::Window(WindowRef::Entity(second_window)),
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..default()
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},
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))
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.id();
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// Since we are using multiple cameras, we need to specify which camera UI should be rendered to
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commands
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.spawn((NodeBundle::default(), TargetCamera(first_window_camera)))
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.with_children(|parent| {
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parent.spawn(TextBundle::from_section(
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"First window",
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TextStyle::default(),
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));
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});
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commands
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.spawn((NodeBundle::default(), TargetCamera(second_window_camera)))
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.with_children(|parent| {
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parent.spawn(TextBundle::from_section(
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"Second window",
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TextStyle::default(),
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));
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});
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}
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