nalgebra/tests/core/matrix_slice.rs

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2018-02-03 17:44:32 +08:00
#![allow(non_snake_case)]
#![cfg_attr(rustfmt, rustfmt_skip)]
use na::{U2, U3, U4};
use na::{DMatrix,
RowVector4,
Vector3,
Matrix2, Matrix3,
Matrix2x3, Matrix3x2, Matrix3x4, Matrix4x2, Matrix2x4, Matrix6x2, Matrix2x6,
MatrixSlice2, MatrixSlice3, MatrixSlice2x3, MatrixSlice3x2,
MatrixSliceXx3, MatrixSlice2xX, DMatrixSlice,
MatrixSliceMut2, MatrixSliceMut3, MatrixSliceMut2x3, MatrixSliceMut3x2,
MatrixSliceMutXx3, MatrixSliceMut2xX, DMatrixSliceMut};
#[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));
}
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#[test]
fn new_slice() {
let data = [ 1.0, 2.0, 3.0, 4.0,
5.0, 6.0, 7.0, 8.0,
9.0, 10.0, 11.0, 12.0 ];
let expected2 = Matrix2::from_column_slice(&data);
let expected3 = Matrix3::from_column_slice(&data);
let expected2x3 = Matrix2x3::from_column_slice(&data);
let expected3x2 = Matrix3x2::from_column_slice(&data);
{
let m2 = MatrixSlice2::new(&data);
let m3 = MatrixSlice3::new(&data);
let m2x3 = MatrixSlice2x3::new(&data);
let m3x2 = MatrixSlice3x2::new(&data);
let m2xX = MatrixSlice2xX::new(&data, 3);
let mXx3 = MatrixSliceXx3::new(&data, 2);
let mXxX = DMatrixSlice::new(&data, 2, 3);
assert!(m2.eq(&expected2));
assert!(m3.eq(&expected3));
assert!(m2x3.eq(&expected2x3));
assert!(m3x2.eq(&expected3x2));
assert!(m2xX.eq(&expected2x3));
assert!(mXx3.eq(&expected2x3));
assert!(mXxX.eq(&expected2x3));
}
}
#[test]
fn new_slice_mut() {
let data = [ 1.0, 2.0, 3.0, 4.0,
5.0, 6.0, 7.0, 8.0,
9.0, 10.0, 11.0, 12.0 ];
let expected2 = [ 0.0, 0.0, 0.0, 0.0,
5.0, 6.0, 7.0, 8.0,
9.0, 10.0, 11.0, 12.0 ];
let expected3 = [ 0.0, 0.0, 0.0, 0.0,
0.0, 0.0, 0.0, 0.0,
0.0, 10.0, 11.0, 12.0 ];
let expected2x3 = [ 0.0, 0.0, 0.0, 0.0,
0.0, 0.0, 7.0, 8.0,
9.0, 10.0, 11.0, 12.0 ];
let expected3x2 = [ 0.0, 0.0, 0.0, 0.0,
0.0, 0.0, 7.0, 8.0,
9.0, 10.0, 11.0, 12.0 ];
let mut data_mut = data.clone();
MatrixSliceMut2::new(&mut data_mut).fill(0.0);
assert!(data_mut == expected2);
let mut data_mut = data.clone();
MatrixSliceMut3::new(&mut data_mut).fill(0.0);
assert!(data_mut == expected3);
let mut data_mut = data.clone();
MatrixSliceMut2x3::new(&mut data_mut).fill(0.0);
assert!(data_mut == expected2x3);
let mut data_mut = data.clone();
MatrixSliceMut3x2::new(&mut data_mut).fill(0.0);
assert!(data_mut == expected3x2);
let mut data_mut = data.clone();
MatrixSliceMut2xX::new(&mut data_mut, 3).fill(0.0);
assert!(data_mut == expected2x3);
let mut data_mut = data.clone();
MatrixSliceMutXx3::new(&mut data_mut, 2).fill(0.0);
assert!(data_mut == expected2x3);
let mut data_mut = data.clone();
DMatrixSliceMut::new(&mut data_mut, 2, 3).fill(0.0);
assert!(data_mut == expected2x3);
}
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#[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));
}