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Add angle constants

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This commit is contained in:
Brendan Zabarauskas 2012-11-27 12:34:15 +10:00
parent 4600d80ce3
commit d7d1c786fb
2 changed files with 44 additions and 1 deletions
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15
src/angle.rs
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@ -16,6 +16,11 @@ pub trait Angle<T>: Add<self,self>
, Modulo<T,self>
, Neg<self>
, Eq, Ord {
static pure fn full_rotation() -> self;
static pure fn half_rotation() -> self;
static pure fn quarter_rotation() -> self;
static pure fn eighth_rotation() -> self;
pure fn to_radians() -> Radians<T>;
pure fn to_degrees() -> Degrees<T>;
}
@ -23,6 +28,11 @@ pub trait Angle<T>: Add<self,self>
pub enum Radians<T> = T;
pub impl<T:Copy Num NumCast> Radians<T>: Angle<T> {
#[inline(always)] static pure fn full_rotation() -> Radians<T> { Radians(move cast(2.0 * pi)) }
#[inline(always)] static pure fn half_rotation() -> Radians<T> { Radians(move cast(pi)) }
#[inline(always)] static pure fn quarter_rotation() -> Radians<T> { Radians(move cast(pi / 2.0)) }
#[inline(always)] static pure fn eighth_rotation() -> Radians<T> { Radians(move cast(pi / 4.0)) }
#[inline(always)] pure fn to_radians() -> Radians<T> { self }
#[inline(always)] pure fn to_degrees() -> Degrees<T> { Degrees(*self * cast(180.0 / pi)) }
@ -49,6 +59,11 @@ pub impl<T:Copy Ord> Radians<T>: Ord {
pub enum Degrees<T> = T;
pub impl<T:Copy Num NumCast> Degrees<T>: Angle<T> {
#[inline(always)] static pure fn full_rotation() -> Degrees<T> { Degrees(move cast(360.0)) }
#[inline(always)] static pure fn half_rotation() -> Degrees<T> { Degrees(move cast(180.0)) }
#[inline(always)] static pure fn quarter_rotation() -> Degrees<T> { Degrees(move cast(90.0)) }
#[inline(always)] static pure fn eighth_rotation() -> Degrees<T> { Degrees(move cast(45.0)) }
#[inline(always)] pure fn to_radians() -> Radians<T> { Radians(*self * cast(pi / 180.0)) }
#[inline(always)] pure fn to_degrees() -> Degrees<T> { self }

30
src/gltypes.rs
View file

@ -22,7 +22,7 @@
use core::sys::size_of;
use angle::{Radians, Degrees, Rotation, Euler};
use angle::{Angle, Radians, Degrees, Rotation, Euler};
use mat::{NumericMatrix, NumericMatrixNxN, Mat2, Mat3, Mat4};
use vec::{Vector, NumericVector, Vec2, Vec3, Vec4};
use quat::{/*Quaternion, */Quat};
@ -438,6 +438,34 @@ pub fn dradians(theta: f64) -> dradians { Radians(theta) }
pub fn degrees(theta: f32) -> degrees { Degrees(theta) }
pub fn ddegrees(theta: f64) -> ddegrees { Degrees(theta) }
pub impl radians {
#[inline(always)] static pure fn full_rotation() -> radians { Angle::full_rotation() }
#[inline(always)] static pure fn half_rotation() -> radians { Angle::half_rotation() }
#[inline(always)] static pure fn quarter_rotation() -> radians { Angle::quarter_rotation() }
#[inline(always)] static pure fn eighth_rotation() -> radians { Angle::eighth_rotation() }
}
pub impl dradians {
#[inline(always)] static pure fn full_rotation() -> dradians { Angle::full_rotation() }
#[inline(always)] static pure fn half_rotation() -> dradians { Angle::half_rotation() }
#[inline(always)] static pure fn quarter_rotation() -> dradians { Angle::quarter_rotation() }
#[inline(always)] static pure fn eighth_rotation() -> dradians { Angle::eighth_rotation() }
}
pub impl degrees {
#[inline(always)] static pure fn full_rotation() -> degrees { Angle::full_rotation() }
#[inline(always)] static pure fn half_rotation() -> degrees { Angle::half_rotation() }
#[inline(always)] static pure fn quarter_rotation() -> degrees { Angle::quarter_rotation() }
#[inline(always)] static pure fn eighth_rotation() -> degrees { Angle::eighth_rotation() }
}
pub impl ddegrees {
#[inline(always)] static pure fn full_rotation() -> ddegrees { Angle::full_rotation() }
#[inline(always)] static pure fn half_rotation() -> ddegrees { Angle::half_rotation() }
#[inline(always)] static pure fn quarter_rotation() -> ddegrees { Angle::quarter_rotation() }
#[inline(always)] static pure fn eighth_rotation() -> ddegrees { Angle::eighth_rotation() }
}
// Axis rotation aliases. These are not present in the GLSL specification, but
// they follow roughly the same nomenclature.