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Add angle unit conversions

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Brendan Zabarauskas 2012-11-04 18:11:32 +10:00
parent 8a3a28481e
commit 3dc5e26126
1 changed files with 15 additions and 1 deletions
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16
src/common/math.rs
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@ -210,7 +210,7 @@ pub trait Trig {
#[inline(always)] pub pure fn tanh<T:Trig>(n: T) -> T { n.tanh() }
#[inline(always)] pub pure fn atan2<T:Trig>(a: T, b: T) -> T { a.atan2(move b) }
pub impl<T: NumCast> T: Trig {
pub impl<T:NumCast> T: Trig {
#[inline(always)] pure fn sin() -> T { f64::sin(self.cast()).cast() }
#[inline(always)] pure fn cos() -> T { f64::cos(self.cast()).cast() }
#[inline(always)] pure fn tan() -> T { f64::tan(self.cast()).cast() }
@ -221,4 +221,18 @@ pub impl<T: NumCast> T: Trig {
#[inline(always)] pure fn cosh() -> T { f64::cosh(self.cast()).cast() }
#[inline(always)] pure fn tanh() -> T { f64::tanh(self.cast()).cast() }
#[inline(always)] pure fn atan2(n: T) -> T { f64::atan2(self.cast(), move n.cast()).cast() }
}
pub trait AngleUnits {
pure fn to_radians() -> self;
pure fn to_degrees() -> self;
}
#[inline(always)] pub pure fn radians<T:AngleUnits>(degrees: T) -> T { degrees.to_radians() }
#[inline(always)] pub pure fn degrees<T:AngleUnits>(radians: T) -> T { radians.to_degrees() }
pub impl<T:Num NumCast> T: AngleUnits {
#[inline(always)] pure fn to_radians() -> T { self * cast(f64::consts::pi / 180f64) }
#[inline(always)] pure fn to_degrees() -> T { self * cast(180f64 / f64::consts::pi) }
}