forked from M-Labs/nalgebra
67 lines
2.3 KiB
Rust
67 lines
2.3 KiB
Rust
use crate::base::{Const, Scalar, ToTypenum};
|
|
use crate::geometry::{Point, Point2, Point3};
|
|
use typenum::{self, Cmp, Greater};
|
|
|
|
macro_rules! impl_swizzle {
|
|
($( where $BaseDim: ident: $( $name: ident() -> $Result: ident[$($i: expr),+] ),+ ;)* ) => {
|
|
$(
|
|
$(
|
|
/// Builds a new point from components of `self`.
|
|
#[inline]
|
|
pub fn $name(&self) -> $Result<N>
|
|
where <Const<D> as ToTypenum>::Typenum: Cmp<typenum::$BaseDim, Output=Greater> {
|
|
$Result::new($(self[$i].inlined_clone()),*)
|
|
}
|
|
)*
|
|
)*
|
|
}
|
|
}
|
|
|
|
/// # Swizzling
|
|
impl<N: Scalar, const D: usize> Point<N, D>
|
|
where
|
|
Const<D>: ToTypenum,
|
|
// DefaultAllocator: Allocator<N, D>,
|
|
{
|
|
impl_swizzle!(
|
|
where U0: xx() -> Point2[0, 0],
|
|
xxx() -> Point3[0, 0, 0];
|
|
|
|
where U1: xy() -> Point2[0, 1],
|
|
yx() -> Point2[1, 0],
|
|
yy() -> Point2[1, 1],
|
|
xxy() -> Point3[0, 0, 1],
|
|
xyx() -> Point3[0, 1, 0],
|
|
xyy() -> Point3[0, 1, 1],
|
|
yxx() -> Point3[1, 0, 0],
|
|
yxy() -> Point3[1, 0, 1],
|
|
yyx() -> Point3[1, 1, 0],
|
|
yyy() -> Point3[1, 1, 1];
|
|
|
|
where U2: xz() -> Point2[0, 2],
|
|
yz() -> Point2[1, 2],
|
|
zx() -> Point2[2, 0],
|
|
zy() -> Point2[2, 1],
|
|
zz() -> Point2[2, 2],
|
|
xxz() -> Point3[0, 0, 2],
|
|
xyz() -> Point3[0, 1, 2],
|
|
xzx() -> Point3[0, 2, 0],
|
|
xzy() -> Point3[0, 2, 1],
|
|
xzz() -> Point3[0, 2, 2],
|
|
yxz() -> Point3[1, 0, 2],
|
|
yyz() -> Point3[1, 1, 2],
|
|
yzx() -> Point3[1, 2, 0],
|
|
yzy() -> Point3[1, 2, 1],
|
|
yzz() -> Point3[1, 2, 2],
|
|
zxx() -> Point3[2, 0, 0],
|
|
zxy() -> Point3[2, 0, 1],
|
|
zxz() -> Point3[2, 0, 2],
|
|
zyx() -> Point3[2, 1, 0],
|
|
zyy() -> Point3[2, 1, 1],
|
|
zyz() -> Point3[2, 1, 2],
|
|
zzx() -> Point3[2, 2, 0],
|
|
zzy() -> Point3[2, 2, 1],
|
|
zzz() -> Point3[2, 2, 2];
|
|
);
|
|
}
|