nalgebra/tests/linalg/convolution.rs

119 lines
3.7 KiB
Rust

use na::{Vector2,Vector3,Vector4,Vector5,DVector};
use std::panic;
//
// Should mimic calculations in Python's scipy library
// >>>from scipy.signal import convolve
//
// >>> convolve([1,2,3,4],[1,2],"same")
// array([ 1, 4, 7, 10])
#[test]
fn convolve_same_check(){
// Static Tests
let actual_s = Vector4::from_vec(vec![1.0,4.0,7.0,10.0]);
let expected_s = Vector4::new(1.0,2.0,3.0,4.0).convolve_same(Vector2::new(1.0,2.0));
assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));
// Dynamic Tests
let actual_d = DVector::from_vec(vec![1.0,4.0,7.0,10.0]);
let expected_d = DVector::from_vec(vec![1.0,2.0,3.0,4.0]).convolve_same(DVector::from_vec(vec![1.0,2.0]));
assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));
// Panic Tests
// These really only apply to dynamic sized vectors
assert!(
panic::catch_unwind(|| {
DVector::from_vec(vec![1.0,2.0]).convolve_same(DVector::from_vec(vec![1.0,2.0,3.0,4.0]));
}).is_err()
);
assert!(
panic::catch_unwind(|| {
DVector::<f32>::from_vec(vec![]).convolve_same(DVector::from_vec(vec![1.0,2.0,3.0,4.0]));
}).is_err()
);
assert!(
panic::catch_unwind(|| {
DVector::from_vec(vec![1.0,2.0,3.0,4.0]).convolve_same(DVector::<f32>::from_vec(vec![]));
}).is_err()
);
}
// >>> convolve([1,2,3,4],[1,2],"full")
// array([ 1, 4, 7, 10, 8])
#[test]
fn convolve_full_check(){
// Static Tests
let actual_s = Vector5::new(1.0,4.0,7.0,10.0,8.0);
let expected_s = Vector4::new(1.0,2.0,3.0,4.0).convolve_full(Vector2::new(1.0,2.0));
assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));
// Dynamic Tests
let actual_d = DVector::from_vec(vec![1.0,4.0,7.0,10.0,8.0]);
let expected_d = DVector::from_vec(vec![1.0,2.0,3.0,4.0]).convolve_full(DVector::from_vec(vec![1.0,2.0]));
assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));
// Panic Tests
// These really only apply to dynamic sized vectors
assert!(
panic::catch_unwind(|| {
DVector::from_vec(vec![1.0,2.0]).convolve_full(DVector::from_vec(vec![1.0,2.0,3.0,4.0]));
}).is_err()
);
assert!(
panic::catch_unwind(|| {
DVector::<f32>::from_vec(vec![]).convolve_full(DVector::from_vec(vec![1.0,2.0,3.0,4.0]));
}).is_err()
);
assert!(
panic::catch_unwind(|| {
DVector::from_vec(vec![1.0,2.0,3.0,4.0]).convolve_full(DVector::<f32>::from_vec(vec![]));
}).is_err()
);
}
// >>> convolve([1,2,3,4],[1,2],"valid")
// array([ 4, 7, 10])
#[test]
fn convolve_valid_check(){
// Static Tests
let actual_s = Vector3::from_vec(vec![4.0,7.0,10.0]);
let expected_s = Vector4::new(1.0,2.0,3.0,4.0).convolve_valid( Vector2::new(1.0,2.0));
assert!(relative_eq!(actual_s, expected_s, epsilon = 1.0e-7));
// Dynamic Tests
let actual_d = DVector::from_vec(vec![4.0,7.0,10.0]);
let expected_d = DVector::from_vec(vec![1.0,2.0,3.0,4.0]).convolve_valid(DVector::from_vec(vec![1.0,2.0]));
assert!(relative_eq!(actual_d, expected_d, epsilon = 1.0e-7));
// Panic Tests
// These really only apply to dynamic sized vectors
assert!(
panic::catch_unwind(|| {
DVector::from_vec(vec![1.0,2.0]).convolve_valid(DVector::from_vec(vec![1.0,2.0,3.0,4.0]));
}).is_err()
);
assert!(
panic::catch_unwind(|| {
DVector::<f32>::from_vec(vec![]).convolve_valid(DVector::from_vec(vec![1.0,2.0,3.0,4.0]));
}).is_err()
);
assert!(
panic::catch_unwind(|| {
DVector::from_vec(vec![1.0,2.0,3.0,4.0]).convolve_valid(DVector::<f32>::from_vec(vec![]));
}).is_err()
);
}