nalgebra/src/geometry/translation_coordinates.rs
2021-08-02 18:41:46 +02:00

40 lines
1.0 KiB
Rust

use std::ops::{Deref, DerefMut};
use crate::base::coordinates::{X, XY, XYZ, XYZW, XYZWA, XYZWAB};
use crate::base::Scalar;
use crate::geometry::Translation;
/*
*
* Give coordinates to Translation{1 .. 6}
*
*/
macro_rules! deref_impl(
($D: expr, $Target: ident $(, $comps: ident)*) => {
impl<T: Scalar> Deref for Translation<T, $D> {
type Target = $Target<T>;
#[inline]
fn deref(&self) -> &Self::Target {
unsafe { &*(self as *const Translation<T, $D> as *const Self::Target) }
}
}
impl<T: Scalar> DerefMut for Translation<T, $D> {
#[inline]
fn deref_mut(&mut self) -> &mut Self::Target {
unsafe { &mut *(self as *mut Translation<T, $D> as *mut Self::Target) }
}
}
}
);
deref_impl!(1, X, x);
deref_impl!(2, XY, x, y);
deref_impl!(3, XYZ, x, y, z);
deref_impl!(4, XYZW, x, y, z, w);
deref_impl!(5, XYZWA, x, y, z, w, a);
deref_impl!(6, XYZWAB, x, y, z, w, a, b);