From ebf470f312bd4f606544d5fe5581fc1ae09a7d96 Mon Sep 17 00:00:00 2001
From: Leon Liu <leon.liuyang.d@gmail.com>
Date: Wed, 13 Aug 2025 21:02:57 +0900
Subject: [PATCH] update

---
 Cargo.lock  | 10 ++++++++++
 Cargo.toml  |  1 +
 src/main.rs | 14 +++++++++++---
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 839406c..031d50a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -880,6 +880,15 @@ dependencies = [
  "glam",
 ]
 
+[[package]]
+name = "bevy_panorbit_camera"
+version = "0.26.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca6e15e297754d0bcb7665620c390c4f05665d4ac4ac91b4b5d3c66b9fe1f0e6"
+dependencies = [
+ "bevy",
+]
+
 [[package]]
 name = "bevy_pbr"
 version = "0.16.1"
@@ -3818,6 +3827,7 @@ name = "solar-sim"
 version = "0.1.0"
 dependencies = [
  "bevy",
+ "bevy_panorbit_camera",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index edda80a..a3cf847 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,7 @@ edition = "2024"
 
 [dependencies]
 bevy = "0.16"
+bevy_panorbit_camera = "0.26"
 
 # Enable a small amount of optimization in the dev profile.
 [profile.dev]
diff --git a/src/main.rs b/src/main.rs
index 0ee0737..284940a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,4 +1,5 @@
 use bevy::{math::DVec3, prelude::*};
+use bevy_panorbit_camera::{PanOrbitCamera, PanOrbitCameraPlugin};
 
 // Unit wrapper types - all distances in AU
 #[derive(Clone, Copy, Debug, PartialEq)]
@@ -90,11 +91,17 @@ fn sync_position_to_transform(mut query: Query<(&Position, &mut Transform), Chan
 }
 
 fn setup_rendering(mut commands: Commands) {
-    // Spawn camera positioned to view the solar system
-    // Place it above and to the side for a good perspective view
+    // Spawn camera with pan/orbit/zoom controls
+    // Place it at a good distance to view the solar system
     commands.spawn((
         Camera3d::default(),
-        Transform::from_xyz(2.0, 1.5, 2.0).looking_at(Vec3::ZERO, Vec3::Y),
+        Transform::from_translation(Vec3::new(2.0, 1.5, 2.0)),
+        PanOrbitCamera {
+            focus: Vec3::ZERO,
+            radius: Some(3.0),
+            is_upside_down: false,
+            ..default()
+        },
     ));
 
     // Spawn directional light from the sun's position
@@ -163,6 +170,7 @@ fn setup_solar_system(mut commands: Commands) {
 fn main() {
     App::new()
         .add_plugins(DefaultPlugins)
+        .add_plugins(PanOrbitCameraPlugin)
         .add_plugins(SolarRenderingPlugin)
         .add_systems(Startup, setup_solar_system)
         .run();