translation_coordinates.rs - source
Description: Source of the Rust file `/Users/erlendbasso/.cargo/registry/src/github.com-1ecc6299db9ec823/nalgebra-0.32.1/src/geometry/translation_coordinates.rs`.
Keywords: rust, rustlang, rust-lang

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    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);