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Optimize unnecessary normalizations for Transform::local_{xyz} (#14171)

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Note that `GlobalTransform` already does it like this for `right`,
`left`, etc. so I didn't have to touch that one
This commit is contained in:
Jan Hohenheim 2024-07-08 03:05:09 +02:00 committed by François
parent 7ed1f6a9b6
commit e941264b6f
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1 changed files with 6 additions and 6 deletions
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12
crates/bevy_transform/src/components/transform.rs
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@ -222,8 +222,8 @@ impl Transform {
/// Get the unit vector in the local `X` direction.
#[inline]
pub fn local_x(&self) -> Dir3 {
// Dir3::new(x) panics if x is of invalid length, but quat * unit vector is length 1
Dir3::new(self.rotation * Vec3::X).unwrap()
// Quat * unit vector is length 1
Dir3::new_unchecked(self.rotation * Vec3::X)
}
/// Equivalent to [`-local_x()`][Transform::local_x()]
@ -241,8 +241,8 @@ impl Transform {
/// Get the unit vector in the local `Y` direction.
#[inline]
pub fn local_y(&self) -> Dir3 {
// Dir3::new(x) panics if x is of invalid length, but quat * unit vector is length 1
Dir3::new(self.rotation * Vec3::Y).unwrap()
// Quat * unit vector is length 1
Dir3::new_unchecked(self.rotation * Vec3::Y)
}
/// Equivalent to [`local_y()`][Transform::local_y]
@ -260,8 +260,8 @@ impl Transform {
/// Get the unit vector in the local `Z` direction.
#[inline]
pub fn local_z(&self) -> Dir3 {
// Dir3::new(x) panics if x is of invalid length, but quat * unit vector is length 1
Dir3::new(self.rotation * Vec3::Z).unwrap()
// Quat * unit vector is length 1
Dir3::new_unchecked(self.rotation * Vec3::Z)
}
/// Equivalent to [`-local_z()`][Transform::local_z]