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Add normalize method

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Brendan Zabarauskas 2012-11-09 17:31:40 +10:00
parent 693a0adda0
commit 59a9cdb8d7
1 changed files with 8 additions and 0 deletions
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8
src/quaternion.rs
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@ -39,6 +39,7 @@ pub trait Quaternion<T> {
pure fn inverse() -> self; pure fn inverse() -> self;
pure fn length2() -> T; pure fn length2() -> T;
pure fn length() -> T; pure fn length() -> T;
pure fn normalize() -> self;
pure fn to_Mat3() -> Mat3<T>; pure fn to_Mat3() -> Mat3<T>;
pure fn to_Mat4() -> Mat4<T>; pure fn to_Mat4() -> Mat4<T>;
@ -157,6 +158,13 @@ pub impl<T:Copy Num NumCast Exp FuzzyEq> Quat<T>: Quaternion<T> {
self.length2().sqrt() self.length2().sqrt()
} }
#[inline(always)]
pure fn normalize() -> Quat<T> {
let mut n: T = cast(1);
n /= self.length();
return self.mul_t(n);
}
#[inline(always)] #[inline(always)]
pure fn to_Mat3() -> Mat3<T> { pure fn to_Mat3() -> Mat3<T> {
let x2 = self.x + self.x; let x2 = self.x + self.x;