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Add ability to control camera manually (e.g. with keyboard) (#11)
* Apply rotation constraints always, not just if there's input * Add force_update option * Update animate example to use force_update * Add keyboard controls example * Base orthographic scale off radius
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| //! Demonstrates how to control the camera using the keyboard | ||
| use bevy::prelude::*; | ||
| use bevy_panorbit_camera::{PanOrbitCamera, PanOrbitCameraPlugin}; | ||
| use std::f32::consts::TAU; | ||
|
|
||
| fn main() { | ||
| App::new() | ||
| .add_plugins(DefaultPlugins) | ||
| .add_plugin(PanOrbitCameraPlugin) | ||
| .add_startup_system(setup) | ||
| .add_system(keyboard_controls) | ||
| .run(); | ||
| } | ||
|
|
||
| fn setup( | ||
| mut commands: Commands, | ||
| mut meshes: ResMut<Assets<Mesh>>, | ||
| mut materials: ResMut<Assets<StandardMaterial>>, | ||
| ) { | ||
| // Ground | ||
| commands.spawn(PbrBundle { | ||
| mesh: meshes.add(shape::Plane::from_size(5.0).into()), | ||
| material: materials.add(Color::rgb(0.3, 0.5, 0.3).into()), | ||
| ..default() | ||
| }); | ||
| // Cube | ||
| commands.spawn(PbrBundle { | ||
| mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })), | ||
| material: materials.add(Color::rgb(0.8, 0.7, 0.6).into()), | ||
| transform: Transform::from_xyz(0.0, 0.5, 0.0), | ||
| ..default() | ||
| }); | ||
| // Light | ||
| commands.spawn(PointLightBundle { | ||
| point_light: PointLight { | ||
| intensity: 1500.0, | ||
| shadows_enabled: true, | ||
| ..default() | ||
| }, | ||
| transform: Transform::from_xyz(4.0, 8.0, 4.0), | ||
| ..default() | ||
| }); | ||
| // Camera | ||
| commands.spawn((Camera3dBundle::default(), PanOrbitCamera::default())); | ||
| } | ||
|
|
||
| fn keyboard_controls( | ||
| time: Res<Time>, | ||
| key_input: Res<Input<KeyCode>>, | ||
| mut pan_orbit_query: Query<(&mut PanOrbitCamera, &mut Transform)>, | ||
| ) { | ||
| for (mut pan_orbit, mut transform) in pan_orbit_query.iter_mut() { | ||
| // Jump by 45 degrees using Left Ctrl + Arrows | ||
| if key_input.pressed(KeyCode::LControl) { | ||
| if key_input.just_pressed(KeyCode::Right) { | ||
| pan_orbit.target_alpha += 45f32.to_radians(); | ||
| } | ||
| if key_input.just_pressed(KeyCode::Left) { | ||
| pan_orbit.target_alpha -= 45f32.to_radians(); | ||
| } | ||
| if key_input.just_pressed(KeyCode::Up) { | ||
| pan_orbit.target_beta += 45f32.to_radians(); | ||
| } | ||
| if key_input.just_pressed(KeyCode::Down) { | ||
| pan_orbit.target_beta -= 45f32.to_radians(); | ||
| } | ||
| } | ||
| // Pan using Left Shift + Arrows | ||
| else if key_input.pressed(KeyCode::LShift) { | ||
| let mut delta_translation = Vec3::ZERO; | ||
| if key_input.pressed(KeyCode::Right) { | ||
| delta_translation += transform.rotation * Vec3::X * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::Left) { | ||
| delta_translation += transform.rotation * Vec3::NEG_X * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::Up) { | ||
| delta_translation += transform.rotation * Vec3::Y * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::Down) { | ||
| delta_translation += transform.rotation * Vec3::NEG_Y * time.delta_seconds(); | ||
| } | ||
| transform.translation += delta_translation; | ||
| pan_orbit.focus += delta_translation; | ||
| } | ||
| // Smooth rotation using arrow keys without modifier | ||
| else { | ||
| if key_input.pressed(KeyCode::Right) { | ||
| pan_orbit.target_alpha += 50f32.to_radians() * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::Left) { | ||
| pan_orbit.target_alpha -= 50f32.to_radians() * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::Up) { | ||
| pan_orbit.target_beta += 50f32.to_radians() * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::Down) { | ||
| pan_orbit.target_beta -= 50f32.to_radians() * time.delta_seconds(); | ||
| } | ||
|
|
||
| // Zoom with Z and X | ||
| if key_input.pressed(KeyCode::Z) { | ||
| pan_orbit.radius -= 5.0 * time.delta_seconds(); | ||
| } | ||
| if key_input.pressed(KeyCode::X) { | ||
| pan_orbit.radius += 5.0 * time.delta_seconds(); | ||
| } | ||
| } | ||
|
|
||
| // Force camera to update its transform | ||
| pan_orbit.force_update = true; | ||
| } | ||
| } |
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