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#![cfg_attr(rustfmt, rustfmt_skip)]
extern crate nalgebra as na;
use na::{DMatrix, Dyn, Matrix2x3, Matrix3x2, Const};
fn main() {
// Matrices can be reshaped in-place without moving or copying values.
let m1 = Matrix2x3::new(
1.1, 1.2, 1.3,
2.1, 2.2, 2.3
);
let m2 = Matrix3x2::new(
1.1, 2.2,
2.1, 1.3,
1.2, 2.3
);
let m3 = m1.reshape_generic(Const::<3>, Const::<2>);
assert_eq!(m3, m2);
// Note that, for statically sized matrices, invalid reshapes will not compile:
//let m4 = m3.reshape_generic(U3, U3);
// If dynamically sized matrices are used, the reshaping is checked at run-time.
let dm1 = DMatrix::from_row_slice(
4,
3,
&[
1.0, 0.0, 0.0,
0.0, 0.0, 1.0,
0.0, 0.0, 0.0,
0.0, 1.0, 0.0
],
);
let dm2 = DMatrix::from_row_slice(
6,
2,
&[
1.0, 0.0,
0.0, 1.0,
0.0, 0.0,
0.0, 1.0,
0.0, 0.0,
0.0, 0.0,
],
);
let dm3 = dm1.reshape_generic(Dyn(6), Dyn(2));
assert_eq!(dm3, dm2);
// Invalid reshapings of dynamic matrices will panic at run-time.
//let dm4 = dm3.reshape_generic(Dyn(6), Dyn(6));
}
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