forked from M-Labs/nalgebra
192 lines
6.4 KiB
Rust
192 lines
6.4 KiB
Rust
use na::{U2, U3, U4};
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use na::{DMatrix,
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RowVector4,
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Vector3,
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Matrix2, Matrix3,
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Matrix3x4, Matrix4x2, Matrix2x4, Matrix6x2, Matrix2x6};
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#[test]
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fn nested_fixed_slices() {
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let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
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21.0, 22.0, 23.0, 24.0,
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31.0, 32.0, 33.0, 34.0);
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let s1 = a.fixed_slice::<U3, U3>(0, 1); // Simple slice.
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let s2 = s1.fixed_slice::<U2, U2>(1, 1); // Slice of slice.
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let s3 = s1.fixed_slice_with_steps::<U2, U2>((0, 0), (1, 1)); // Slice of slice with steps.
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let expected_owned_s1 = Matrix3::new(12.0, 13.0, 14.0,
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22.0, 23.0, 24.0,
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32.0, 33.0, 34.0);
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let expected_owned_s2 = Matrix2::new(23.0, 24.0,
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33.0, 34.0);
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let expected_owned_s3 = Matrix2::new(12.0, 14.0,
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32.0, 34.0);
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assert_eq!(expected_owned_s1, s1.clone_owned());
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assert_eq!(expected_owned_s2, s2.clone_owned());
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assert_eq!(expected_owned_s3, s3.clone_owned());
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}
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#[test]
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fn nested_slices() {
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let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
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21.0, 22.0, 23.0, 24.0,
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31.0, 32.0, 33.0, 34.0);
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let s1 = a.slice((0, 1), (3, 3));
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let s2 = s1.slice((1, 1), (2, 2));
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let s3 = s1.slice_with_steps((0, 0), (2, 2), (1, 1));
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let expected_owned_s1 = DMatrix::from_row_slice(3, 3, &[ 12.0, 13.0, 14.0,
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22.0, 23.0, 24.0,
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32.0, 33.0, 34.0 ]);
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let expected_owned_s2 = DMatrix::from_row_slice(2, 2, &[ 23.0, 24.0,
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33.0, 34.0 ]);
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let expected_owned_s3 = DMatrix::from_row_slice(2, 2, &[ 12.0, 14.0,
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32.0, 34.0 ]);
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assert_eq!(expected_owned_s1, s1.clone_owned());
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assert_eq!(expected_owned_s2, s2.clone_owned());
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assert_eq!(expected_owned_s3, s3.clone_owned());
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}
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#[test]
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fn slice_mut() {
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let mut a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
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21.0, 22.0, 23.0, 24.0,
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31.0, 32.0, 33.0, 34.0);
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{
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// We modify `a` through the mutable slice.
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let mut s1 = a.slice_with_steps_mut((0, 1), (2, 2), (1, 1));
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s1.fill(0.0);
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}
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let expected_a = Matrix3x4::new(11.0, 0.0, 13.0, 0.0,
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21.0, 22.0, 23.0, 24.0,
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31.0, 0.0, 33.0, 0.0);
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assert_eq!(expected_a, a);
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}
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#[test]
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fn nested_row_slices() {
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let a = Matrix6x2::new(11.0, 12.0,
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21.0, 22.0,
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31.0, 32.0,
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41.0, 42.0,
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51.0, 52.0,
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61.0, 62.0);
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let s1 = a.fixed_rows::<U4>(1);
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let s2 = s1.fixed_rows_with_step::<U2>(1, 1);
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let expected_owned_s1 = Matrix4x2::new(21.0, 22.0,
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31.0, 32.0,
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41.0, 42.0,
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51.0, 52.0);
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let expected_owned_s2 = Matrix2::new(31.0, 32.0,
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51.0, 52.0);
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assert_eq!(expected_owned_s1, s1.clone_owned());
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assert_eq!(expected_owned_s2, s2.clone_owned());
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}
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#[test]
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fn row_slice_mut() {
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let mut a = Matrix6x2::new(11.0, 12.0,
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21.0, 22.0,
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31.0, 32.0,
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41.0, 42.0,
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51.0, 52.0,
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61.0, 62.0);
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{
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// We modify `a` through the mutable slice.
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let mut s1 = a.rows_with_step_mut(1, 3, 1);
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s1.fill(0.0);
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}
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let expected_a = Matrix6x2::new(11.0, 12.0,
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0.0, 0.0,
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31.0, 32.0,
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0.0, 0.0,
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51.0, 52.0,
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0.0, 0.0);
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assert_eq!(expected_a, a);
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}
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#[test]
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fn nested_col_slices() {
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let a = Matrix2x6::new(11.0, 12.0, 13.0, 14.0, 15.0, 16.0,
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21.0, 22.0, 23.0, 24.0, 25.0, 26.0);
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let s1 = a.fixed_columns::<U4>(1);
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let s2 = s1.fixed_columns_with_step::<U2>(1, 1);
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let expected_owned_s1 = Matrix2x4::new(12.0, 13.0, 14.0, 15.0,
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22.0, 23.0, 24.0, 25.0);
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let expected_owned_s2 = Matrix2::new(13.0, 15.0,
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23.0, 25.0);
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assert_eq!(expected_owned_s1, s1.clone_owned());
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assert_eq!(expected_owned_s2, s2.clone_owned());
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}
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#[test]
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fn col_slice_mut() {
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let mut a = Matrix2x6::new(11.0, 12.0, 13.0, 14.0, 15.0, 16.0,
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21.0, 22.0, 23.0, 24.0, 25.0, 26.0);
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{
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// We modify `a` through the mutable slice.
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let mut s1 = a.columns_with_step_mut(1, 3, 1);
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s1.fill(0.0);
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}
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let expected_a = Matrix2x6::new(11.0, 0.0, 13.0, 0.0, 15.0, 0.0,
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21.0, 0.0, 23.0, 0.0, 25.0, 0.0);
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assert_eq!(expected_a, a.clone_owned());
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}
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#[test]
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fn rows_range_pair() {
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let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
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21.0, 22.0, 23.0, 24.0,
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31.0, 32.0, 33.0, 34.0);
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let (l, r) = a.rows_range_pair(.. 3, 3 ..);
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assert!(r.len() == 0 && l.eq(&a));
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let (l, r) = a.rows_range_pair(0, 1 ..);
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let expected_l = RowVector4::new(11.0, 12.0, 13.0, 14.0);
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let expected_r = Matrix2x4::new(21.0, 22.0, 23.0, 24.0,
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31.0, 32.0, 33.0, 34.0);
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assert!(l.eq(&expected_l) && r.eq(&expected_r));
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}
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#[test]
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fn columns_range_pair() {
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let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
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21.0, 22.0, 23.0, 24.0,
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31.0, 32.0, 33.0, 34.0);
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let (l, r) = a.columns_range_pair(.. 4, 4 ..);
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assert!(r.len() == 0 && l.eq(&a));
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let (l, r) = a.columns_range_pair(0, 1 ..);
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let expected_l = Vector3::new(11.0, 21.0, 31.0);
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let expected_r = Matrix3::new(12.0, 13.0, 14.0,
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22.0, 23.0, 24.0,
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32.0, 33.0, 34.0);
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assert!(l.eq(&expected_l) && r.eq(&expected_r));
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}
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