nalgebra/tests/core/matrix_slice.rs
2017-08-15 19:07:18 +02:00

248 lines
7.4 KiB
Rust

use na::{U2, U3, U4};
use na::{DMatrix,
RowVector4,
Vector3,
Matrix2, Matrix3,
Matrix3x4, Matrix4x2, Matrix2x4, Matrix6x2, Matrix2x6};
#[test]
fn nested_fixed_slices() {
let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
21.0, 22.0, 23.0, 24.0,
31.0, 32.0, 33.0, 34.0);
let s1 = a.fixed_slice::<U3, U3>(0, 1); // Simple slice.
let s2 = s1.fixed_slice::<U2, U2>(1, 1); // Slice of slice.
let s3 = s1.fixed_slice_with_steps::<U2, U2>((0, 0), (1, 1)); // Slice of slice with steps.
let expected_owned_s1 = Matrix3::new(12.0, 13.0, 14.0,
22.0, 23.0, 24.0,
32.0, 33.0, 34.0);
let expected_owned_s2 = Matrix2::new(23.0, 24.0,
33.0, 34.0);
let expected_owned_s3 = Matrix2::new(12.0, 14.0,
32.0, 34.0);
assert_eq!(expected_owned_s1, s1.clone_owned());
assert_eq!(expected_owned_s2, s2.clone_owned());
assert_eq!(expected_owned_s3, s3.clone_owned());
}
#[test]
fn nested_slices() {
let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
21.0, 22.0, 23.0, 24.0,
31.0, 32.0, 33.0, 34.0);
let s1 = a.slice((0, 1), (3, 3));
let s2 = s1.slice((1, 1), (2, 2));
let s3 = s1.slice_with_steps((0, 0), (2, 2), (1, 1));
let expected_owned_s1 = DMatrix::from_row_slice(3, 3, &[ 12.0, 13.0, 14.0,
22.0, 23.0, 24.0,
32.0, 33.0, 34.0 ]);
let expected_owned_s2 = DMatrix::from_row_slice(2, 2, &[ 23.0, 24.0,
33.0, 34.0 ]);
let expected_owned_s3 = DMatrix::from_row_slice(2, 2, &[ 12.0, 14.0,
32.0, 34.0 ]);
assert_eq!(expected_owned_s1, s1.clone_owned());
assert_eq!(expected_owned_s2, s2.clone_owned());
assert_eq!(expected_owned_s3, s3.clone_owned());
}
#[test]
fn slice_mut() {
let mut a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
21.0, 22.0, 23.0, 24.0,
31.0, 32.0, 33.0, 34.0);
{
// We modify `a` through the mutable slice.
let mut s1 = a.slice_with_steps_mut((0, 1), (2, 2), (1, 1));
s1.fill(0.0);
}
let expected_a = Matrix3x4::new(11.0, 0.0, 13.0, 0.0,
21.0, 22.0, 23.0, 24.0,
31.0, 0.0, 33.0, 0.0);
assert_eq!(expected_a, a);
}
#[test]
fn nested_row_slices() {
let a = Matrix6x2::new(11.0, 12.0,
21.0, 22.0,
31.0, 32.0,
41.0, 42.0,
51.0, 52.0,
61.0, 62.0);
let s1 = a.fixed_rows::<U4>(1);
let s2 = s1.fixed_rows_with_step::<U2>(1, 1);
let expected_owned_s1 = Matrix4x2::new(21.0, 22.0,
31.0, 32.0,
41.0, 42.0,
51.0, 52.0);
let expected_owned_s2 = Matrix2::new(31.0, 32.0,
51.0, 52.0);
assert_eq!(expected_owned_s1, s1.clone_owned());
assert_eq!(expected_owned_s2, s2.clone_owned());
}
#[test]
fn row_slice_mut() {
let mut a = Matrix6x2::new(11.0, 12.0,
21.0, 22.0,
31.0, 32.0,
41.0, 42.0,
51.0, 52.0,
61.0, 62.0);
{
// We modify `a` through the mutable slice.
let mut s1 = a.rows_with_step_mut(1, 3, 1);
s1.fill(0.0);
}
let expected_a = Matrix6x2::new(11.0, 12.0,
0.0, 0.0,
31.0, 32.0,
0.0, 0.0,
51.0, 52.0,
0.0, 0.0);
assert_eq!(expected_a, a);
}
#[test]
fn nested_col_slices() {
let a = Matrix2x6::new(11.0, 12.0, 13.0, 14.0, 15.0, 16.0,
21.0, 22.0, 23.0, 24.0, 25.0, 26.0);
let s1 = a.fixed_columns::<U4>(1);
let s2 = s1.fixed_columns_with_step::<U2>(1, 1);
let expected_owned_s1 = Matrix2x4::new(12.0, 13.0, 14.0, 15.0,
22.0, 23.0, 24.0, 25.0);
let expected_owned_s2 = Matrix2::new(13.0, 15.0,
23.0, 25.0);
assert_eq!(expected_owned_s1, s1.clone_owned());
assert_eq!(expected_owned_s2, s2.clone_owned());
}
#[test]
fn col_slice_mut() {
let mut a = Matrix2x6::new(11.0, 12.0, 13.0, 14.0, 15.0, 16.0,
21.0, 22.0, 23.0, 24.0, 25.0, 26.0);
{
// We modify `a` through the mutable slice.
let mut s1 = a.columns_with_step_mut(1, 3, 1);
s1.fill(0.0);
}
let expected_a = Matrix2x6::new(11.0, 0.0, 13.0, 0.0, 15.0, 0.0,
21.0, 0.0, 23.0, 0.0, 25.0, 0.0);
assert_eq!(expected_a, a.clone_owned());
}
#[test]
fn rows_range_pair() {
let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
21.0, 22.0, 23.0, 24.0,
31.0, 32.0, 33.0, 34.0);
let (l, r) = a.rows_range_pair(.. 3, 3 ..);
assert!(r.len() == 0 && l.eq(&a));
let (l, r) = a.rows_range_pair(0, 1 ..);
let expected_l = RowVector4::new(11.0, 12.0, 13.0, 14.0);
let expected_r = Matrix2x4::new(21.0, 22.0, 23.0, 24.0,
31.0, 32.0, 33.0, 34.0);
assert!(l.eq(&expected_l) && r.eq(&expected_r));
}
#[test]
fn columns_range_pair() {
let a = Matrix3x4::new(11.0, 12.0, 13.0, 14.0,
21.0, 22.0, 23.0, 24.0,
31.0, 32.0, 33.0, 34.0);
let (l, r) = a.columns_range_pair(.. 4, 4 ..);
assert!(r.len() == 0 && l.eq(&a));
let (l, r) = a.columns_range_pair(0, 1 ..);
let expected_l = Vector3::new(11.0, 21.0, 31.0);
let expected_r = Matrix3::new(12.0, 13.0, 14.0,
22.0, 23.0, 24.0,
32.0, 33.0, 34.0);
assert!(l.eq(&expected_l) && r.eq(&expected_r));
}
#[test]
#[should_panic]
fn row_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.row(3);
}
#[test]
#[should_panic]
fn rows_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.rows(1, 3);
}
#[test]
#[should_panic]
fn rows_with_step_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.rows_with_step(1, 2, 1);
}
#[test]
#[should_panic]
fn column_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.column(4);
}
#[test]
#[should_panic]
fn columns_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.columns(2, 3);
}
#[test]
#[should_panic]
fn columns_with_step_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.columns_with_step(2, 2, 1);
}
#[test]
#[should_panic]
fn slice_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.slice((1, 2), (3, 1));
}
#[test]
#[should_panic]
fn slice_with_steps_out_of_bounds() {
let a = Matrix3x4::<f32>::zeros();
a.slice_with_steps((1, 2), (2, 2), (0, 1));
}