67 lines
2.3 KiB
Rust
67 lines
2.3 KiB
Rust
use crate::base::{DimName, Scalar, ToTypenum, Vector, Vector2, Vector3};
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use crate::storage::RawStorage;
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use typenum::{self, Cmp, Greater};
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macro_rules! impl_swizzle {
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($( where $BaseDim: ident: $( $name: ident() -> $Result: ident[$($i: expr),+] ),+ ;)* ) => {
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$(
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$(
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/// Builds a new vector from components of `self`.
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#[inline]
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#[must_use]
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pub fn $name(&self) -> $Result<T>
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where D::Typenum: Cmp<typenum::$BaseDim, Output=Greater> {
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$Result::new($(self[$i].clone()),*)
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}
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)*
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)*
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}
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}
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/// # Swizzling
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impl<T: Scalar, D, S: RawStorage<T, D>> Vector<T, D, S>
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where
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D: DimName + ToTypenum,
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{
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impl_swizzle!(
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where U0: xx() -> Vector2[0, 0],
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xxx() -> Vector3[0, 0, 0];
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where U1: xy() -> Vector2[0, 1],
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yx() -> Vector2[1, 0],
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yy() -> Vector2[1, 1],
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xxy() -> Vector3[0, 0, 1],
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xyx() -> Vector3[0, 1, 0],
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xyy() -> Vector3[0, 1, 1],
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yxx() -> Vector3[1, 0, 0],
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yxy() -> Vector3[1, 0, 1],
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yyx() -> Vector3[1, 1, 0],
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yyy() -> Vector3[1, 1, 1];
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where U2: xz() -> Vector2[0, 2],
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yz() -> Vector2[1, 2],
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zx() -> Vector2[2, 0],
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zy() -> Vector2[2, 1],
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zz() -> Vector2[2, 2],
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xxz() -> Vector3[0, 0, 2],
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xyz() -> Vector3[0, 1, 2],
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xzx() -> Vector3[0, 2, 0],
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xzy() -> Vector3[0, 2, 1],
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xzz() -> Vector3[0, 2, 2],
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yxz() -> Vector3[1, 0, 2],
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yyz() -> Vector3[1, 1, 2],
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yzx() -> Vector3[1, 2, 0],
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yzy() -> Vector3[1, 2, 1],
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yzz() -> Vector3[1, 2, 2],
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zxx() -> Vector3[2, 0, 0],
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zxy() -> Vector3[2, 0, 1],
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zxz() -> Vector3[2, 0, 2],
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zyx() -> Vector3[2, 1, 0],
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zyy() -> Vector3[2, 1, 1],
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zyz() -> Vector3[2, 1, 2],
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zzx() -> Vector3[2, 2, 0],
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zzy() -> Vector3[2, 2, 1],
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zzz() -> Vector3[2, 2, 2];
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);
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}
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