#[macro_use]
mod support;
macro_rules! impl_affine2_tests {
($t:ident, $affine2:ident, $vec2:ident) => {
const MATRIX2D: [[$t; 2]; 3] = [[1.0, 2.0], [3.0, 4.0], [5.0, 6.0]];
use core::$t::NAN;
use core::$t::NEG_INFINITY;
glam_test!(test_affine2_identity, {
assert_eq!($affine2::IDENTITY, $affine2::IDENTITY * $affine2::IDENTITY);
assert_eq!($affine2::IDENTITY, $affine2::default());
});
glam_test!(test_affine2_zero, {
assert_eq!(
$affine2::ZERO.transform_point2($vec2::new(1., 2.)),
$vec2::ZERO
);
});
glam_test!(test_affine2_translation, {
let translate = $affine2::from_translation($vec2::new(1.0, 2.0));
assert_eq!(translate.translation, $vec2::new(1.0, 2.0).into());
assert_eq!(
translate.transform_point2($vec2::new(2.0, 3.0)),
$vec2::new(3.0, 5.0),
);
});
glam_test!(test_affine2_mul, {
let m = $affine2::from_angle(deg(90.0));
let result3 = m.transform_vector2($vec2::Y);
assert_approx_eq!($vec2::new(-1.0, 0.0), result3);
let m = $affine2::from_scale_angle_translation(
$vec2::new(0.5, 1.5),
deg(90.0),
$vec2::new(1.0, 2.0),
);
let result3 = m.transform_vector2($vec2::Y);
assert_approx_eq!($vec2::new(-1.5, 0.0), result3, 1.0e-6);
let result3 = m.transform_point2($vec2::Y);
assert_approx_eq!($vec2::new(-0.5, 2.0), result3, 1.0e-6);
});
glam_test!(test_from_scale, {
let m = $affine2::from_scale($vec2::new(2.0, 4.0));
assert_approx_eq!(
m.transform_point2($vec2::new(1.0, 1.0)),
$vec2::new(2.0, 4.0)
);
});
glam_test!(test_affine2_inverse, {
let inv = $affine2::IDENTITY.inverse();
assert_approx_eq!($affine2::IDENTITY, inv);
let rot = $affine2::from_angle(deg(90.0));
let rot_inv = rot.inverse();
assert_approx_eq!($affine2::IDENTITY, rot * rot_inv);
assert_approx_eq!($affine2::IDENTITY, rot_inv * rot);
let trans = $affine2::from_translation($vec2::new(1.0, 2.0));
let trans_inv = trans.inverse();
assert_approx_eq!($affine2::IDENTITY, trans * trans_inv);
assert_approx_eq!($affine2::IDENTITY, trans_inv * trans);
let scale = $affine2::from_scale($vec2::new(4.0, 5.0));
let scale_inv = scale.inverse();
assert_approx_eq!($affine2::IDENTITY, scale * scale_inv);
assert_approx_eq!($affine2::IDENTITY, scale_inv * scale);
let m = scale * rot * trans;
let m_inv = m.inverse();
assert_approx_eq!($affine2::IDENTITY, m * m_inv, 1.0e-5);
assert_approx_eq!($affine2::IDENTITY, m_inv * m, 1.0e-5);
assert_approx_eq!(m_inv, trans_inv * rot_inv * scale_inv, 1.0e-6);
let m = $affine2::from_angle(0.5)
* $affine2::from_scale($vec2::new(1.0, 0.5))
* $affine2::from_angle(-0.5);
let m_inv = m.inverse();
assert_approx_eq!($affine2::IDENTITY, m * m_inv, 1.0e-5);
assert_approx_eq!($affine2::IDENTITY, m_inv * m, 1.0e-5);
should_glam_assert!({ $affine2::ZERO.inverse() });
});
glam_test!(test_affine2_ops, {
let m0 = $affine2::from_cols_array_2d(&MATRIX2D);
let m0x2 = $affine2::from_cols_array_2d(&[[2.0, 4.0], [6.0, 8.0], [10.0, 12.0]]);
assert_eq!(m0x2, m0 * 2.0);
assert_eq!(m0x2, 2.0 * m0);
assert_eq!(m0x2, m0 + m0);
assert_eq!($affine2::ZERO, m0 - m0);
assert_approx_eq!(m0, m0 * $affine2::IDENTITY);
assert_approx_eq!(m0, $affine2::IDENTITY * m0);
});
glam_test!(test_affine2_fmt, {
let a = $affine2::from_cols_array_2d(&MATRIX2D);
assert_eq!(format!("{}", a), "[[1, 2], [3, 4], [5, 6]]");
});
glam_test!(test_affine2_to_from_slice, {
const MATRIX1D: [$t; 6] = [1.0, 2.0, 3.0, 4.0, 5.0, 6.0];
let m = $affine2::from_cols_slice(&MATRIX1D);
assert_eq!($affine2::from_cols_array(&MATRIX1D), m);
assert_eq!(MATRIX1D, m.to_cols_array());
assert_eq!(MATRIX2D, m.to_cols_array_2d());
let mut out: [$t; 6] = Default::default();
m.write_cols_to_slice(&mut out);
assert_eq!(MATRIX1D, out);
assert_eq!(
m,
$affine2::from_cols(MATRIX2D[0].into(), MATRIX2D[1].into(), MATRIX2D[2].into())
);
should_panic!({ $affine2::from_cols_slice(&[0.0; 5]) });
should_panic!({ $affine2::IDENTITY.write_cols_to_slice(&mut [0.0; 5]) });
});
#[cfg(feature = "std")]
glam_test!(test_product, {
let ident = $affine2::IDENTITY;
assert_eq!(
vec![ident, ident].iter().product::<$affine2>(),
ident * ident
);
});
glam_test!(test_affine2_is_finite, {
assert!($affine2::from_scale($vec2::new(1.0, 1.0)).is_finite());
assert!($affine2::from_scale($vec2::new(0.0, 1.0)).is_finite());
assert!(!$affine2::from_scale($vec2::new(1.0, NAN)).is_finite());
assert!(!$affine2::from_scale($vec2::new(1.0, NEG_INFINITY)).is_finite());
});
};
}
mod affine2 {
use super::support::{deg, FloatCompare};
use glam::{Affine2, Vec2};
impl FloatCompare for Affine2 {
#[inline]
fn approx_eq(&self, other: &Self, max_abs_diff: f32) -> bool {
self.abs_diff_eq(*other, max_abs_diff)
}
#[inline]
fn abs_diff(&self, other: &Self) -> Self {
Self {
matrix2: self.matrix2.abs_diff(&other.matrix2),
translation: self.translation.abs_diff(&other.translation),
}
}
}
glam_test!(test_align, {
use std::mem;
if cfg!(not(feature = "scalar-math")) {
assert_eq!(32, mem::size_of::<Affine2>());
assert_eq!(16, mem::align_of::<Affine2>());
} else {
assert_eq!(24, mem::size_of::<Affine2>());
assert_eq!(4, mem::align_of::<Affine2>());
}
});
impl_affine2_tests!(f32, Affine2, Vec2);
}
mod daffine2 {
use super::support::{deg, FloatCompare};
use glam::{DAffine2, DVec2};
impl FloatCompare for DAffine2 {
#[inline]
fn approx_eq(&self, other: &Self, max_abs_diff: f32) -> bool {
self.abs_diff_eq(*other, max_abs_diff as f64)
}
#[inline]
fn abs_diff(&self, other: &Self) -> Self {
Self {
matrix2: self.matrix2.abs_diff(&other.matrix2),
translation: self.translation.abs_diff(&other.translation),
}
}
}
glam_test!(test_align, {
use std::mem;
assert_eq!(48, mem::size_of::<DAffine2>());
assert_eq!(mem::align_of::<f64>(), mem::align_of::<DAffine2>());
});
impl_affine2_tests!(f64, DAffine2, DVec2);
}