From 89fbe9c0d5931b13a45fdea76f791489c8828610 Mon Sep 17 00:00:00 2001
From: James Beilby <jamesbeilby@gmail.com>
Date: Thu, 11 Nov 2021 12:59:58 +0000
Subject: [PATCH 1/3] Added Transform::rotate_around method

---
 crates/bevy_transform/src/components/transform.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/crates/bevy_transform/src/components/transform.rs b/crates/bevy_transform/src/components/transform.rs
index cea0fc32cb032..cfab0766ea319 100644
--- a/crates/bevy_transform/src/components/transform.rs
+++ b/crates/bevy_transform/src/components/transform.rs
@@ -205,6 +205,14 @@ impl Transform {
         self.rotation *= rotation;
     }
 
+    /// Rotates this [`Transform`] around a point in local space.
+    /// If the point is a zero vector, this will rotate around the parent (if any) or the origin.
+    #[inline]
+    pub fn rotate_around(&mut self, point: Vec3, rotation: Quat) {
+        self.translation = point + rotation * (self.translation - point);
+        self.rotation *= rotation;
+    }
+
     /// Multiplies `self` with `transform` component by component, returning the
     /// resulting [`Transform`]
     #[inline]
@@ -235,8 +243,8 @@ impl Transform {
         self.scale *= scale_factor;
     }
 
-    /// Rotates this [`Transform`] so that its unit vector in the local z direction is toward
-    /// `target` and its unit vector in the local y direction is toward `up`.
+    /// Rotates this [`Transform`] so that its local z direction is toward
+    /// `target` and its local y direction is toward `up`.
     #[inline]
     pub fn look_at(&mut self, target: Vec3, up: Vec3) {
         let forward = Vec3::normalize(self.translation - target);
@@ -244,6 +252,7 @@ impl Transform {
         let up = forward.cross(right);
         self.rotation = Quat::from_mat3(&Mat3::from_cols(right, up, forward));
     }
+
 }
 
 impl Default for Transform {

From bc2c6033c295c462740b2711c17549e9fde0feac Mon Sep 17 00:00:00 2001
From: James Beilby <jamesbeilby@gmail.com>
Date: Thu, 11 Nov 2021 14:08:14 +0000
Subject: [PATCH 2/3] Added GlobalTransform::rotate_around for consistency

---
 crates/bevy_transform/src/components/global_transform.rs | 7 +++++++
 crates/bevy_transform/src/components/transform.rs        | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/crates/bevy_transform/src/components/global_transform.rs b/crates/bevy_transform/src/components/global_transform.rs
index 930f23a48af99..d5451b1ec04de 100644
--- a/crates/bevy_transform/src/components/global_transform.rs
+++ b/crates/bevy_transform/src/components/global_transform.rs
@@ -193,6 +193,13 @@ impl GlobalTransform {
         self.rotation *= rotation;
     }
 
+    #[doc(hidden)]
+    #[inline]
+    pub fn rotate_around(&mut self, point: Vec3, rotation: Quat) {
+        self.translation = point + rotation * (self.translation - point);
+        self.rotation *= rotation;
+    }
+
     /// Multiplies `self` with `transform` component by component, returning the
     /// resulting [`GlobalTransform`]
     #[inline]
diff --git a/crates/bevy_transform/src/components/transform.rs b/crates/bevy_transform/src/components/transform.rs
index cfab0766ea319..cf10c730a9fd7 100644
--- a/crates/bevy_transform/src/components/transform.rs
+++ b/crates/bevy_transform/src/components/transform.rs
@@ -205,7 +205,7 @@ impl Transform {
         self.rotation *= rotation;
     }
 
-    /// Rotates this [`Transform`] around a point in local space.
+    /// Rotates this [`Transform`] around a point in space.
     /// If the point is a zero vector, this will rotate around the parent (if any) or the origin.
     #[inline]
     pub fn rotate_around(&mut self, point: Vec3, rotation: Quat) {

From 8ab523e87bd5850972fe2b5f8c6aa217a6661b7d Mon Sep 17 00:00:00 2001
From: James Beilby <jamesbeilby@gmail.com>
Date: Thu, 11 Nov 2021 14:28:25 +0000
Subject: [PATCH 3/3] Fixed whitespace for cargo fmt

---
 crates/bevy_transform/src/components/transform.rs | 1 -
 1 file changed, 1 deletion(-)

diff --git a/crates/bevy_transform/src/components/transform.rs b/crates/bevy_transform/src/components/transform.rs
index cf10c730a9fd7..d456e4eba753e 100644
--- a/crates/bevy_transform/src/components/transform.rs
+++ b/crates/bevy_transform/src/components/transform.rs
@@ -252,7 +252,6 @@ impl Transform {
         let up = forward.cross(right);
         self.rotation = Quat::from_mat3(&Mat3::from_cols(right, up, forward));
     }
-
 }
 
 impl Default for Transform {