grafix_toolbox/kit/policies/math/cast/
nalgebra.rs

1use crate::lib::*;
2
3macro_rules! arr_cast {
4	($from: ty, $to: ty, $dim: literal) => {
5		impl Cast<$from> for $to {
6			#[inline(always)]
7			fn to(v: $from) -> Self {
8				<[_; $dim]>::from(v).into()
9			}
10		}
11		impl Cast<$to> for $from {
12			#[inline(always)]
13			fn to(v: $to) -> Self {
14				<[_; $dim]>::from(v).into()
15			}
16		}
17	};
18}
19macro_rules! impl_vec {
20	($($t: ty),+) => {
21		$(
22			arr_cast!(na::Vector2<$t>, vec2<$t>, 2);
23			arr_cast!(na::Vector3<$t>, vec3<$t>, 3);
24			arr_cast!(na::Vector4<$t>, vec4<$t>, 4);
25			arr_cast!(na::Point2<$t>, vec2<$t>, 2);
26			arr_cast!(na::Point3<$t>, vec3<$t>, 3);
27			arr_cast!(na::Point4<$t>, vec4<$t>, 4);
28		)+
29	};
30}
31impl_vec!(u8, i8, u16, i16, u32, i32, u64, i64, u128, i128, f16, f32, f64);
32
33macro_rules! mat_cast {
34	($from: ty, $to: ty, $l: literal, $c: literal, $r: literal) => {
35		impl Cast<$to> for $from {
36			#[inline(always)]
37			fn to(v: $to) -> Self {
38				let m: [_; $c] = v.into();
39				Self::from_column_slice(&m.map(Into::<[_; $r]>::into).concat())
40			}
41		}
42		impl Cast<$from> for $to {
43			#[inline(always)]
44			fn to(v: $from) -> Self {
45				let m: [_; $l] = v.as_slice().try_into().valid();
46				let m: [[_; $r]; $c] = unsafe { mem::transmute(m) };
47				m.map(Into::into).into()
48			}
49		}
50	};
51}
52macro_rules! impl_mat {
53	($($t: ty),+) => {
54		$(
55			mat_cast!(na::Matrix2<$t>, mat2<$t>, 4, 2, 2);
56			mat_cast!(na::Matrix3<$t>, mat3<$t>, 9, 3, 3);
57			mat_cast!(na::Matrix4<$t>, mat4<$t>, 16, 4, 4);
58			mat_cast!(na::Matrix2x3<$t>, mat3x2<$t>, 6, 3, 2);
59			mat_cast!(na::Matrix2x4<$t>, mat4x2<$t>, 8, 4, 2);
60			mat_cast!(na::Matrix3x2<$t>, mat2x3<$t>, 6, 2, 3);
61			mat_cast!(na::Matrix3x4<$t>, mat4x3<$t>, 12, 4, 3);
62			mat_cast!(na::Matrix4x2<$t>, mat2x4<$t>, 8, 2, 4);
63			mat_cast!(na::Matrix4x3<$t>, mat3x4<$t>, 12, 3, 4);
64		)+
65	};
66}
67impl_mat!(u8, i8, u16, i16, u32, i32, u64, i64, u128, i128, f16, f32, f64);
68
69use nalgebra as na;
grafix_toolbox/kit/policies/math/cast/nalgebra.rs

grafix_toolbox/kit/policies/math/cast/
nalgebra.rs
