Crates.io | shigens |
lib.rs | shigens |
version | 0.1.0 |
source | src |
created_at | 2020-10-03 07:16:43.935451 |
updated_at | 2020-10-03 07:16:43.935451 |
description | A math library for calculate quaternion. |
homepage | https://github.com/kan1-u/shigens |
repository | |
max_upload_size | |
id | 295675 |
size | 31,522 |
The shigens
is a math library for calculate quaternion.
When there was such a variable
x = 1 + 2i + 3j + 4k
in shigens
can write like this.
use shigens::*;
let x = quaternion(1, 2, 3, 4);
// or
let x = r(1) + i(2) + j(3) + k(4);
So far, I have implemented only basic operations.
use shigens::*;
assert_eq!(i(1) * i(1), r(-1));
assert_eq!(j(1) * j(1), r(-1));
assert_eq!(k(1) * k(1), r(-1));
use shigens::*;
let x1 = quaternion(2, 3, 4, 5);
let x2 = quaternion(6, 7, 8, 9);
let y = x1 + x2;
assert_eq!(y.r.get_value(), 2 + 6);
assert_eq!(y.i.get_value(), 3 + 7);
assert_eq!(y.j.get_value(), 4 + 8);
assert_eq!(y.k.get_value(), 5 + 9);
use shigens::*;
let x1 = quaternion(2, 3, 4, 5);
let x2 = quaternion(6, 7, 8, 9);
let y = x1 * x2;
assert_eq!(y.r.get_value(), 2 * 6 - 3 * 7 - 4 * 8 - 5 * 9);
assert_eq!(y.i.get_value(), 2 * 7 + 3 * 6 + 4 * 9 - 5 * 8);
assert_eq!(y.j.get_value(), 2 * 8 + 4 * 6 + 5 * 7 - 3 * 9);
assert_eq!(y.k.get_value(), 2 * 9 + 5 * 6 + 3 * 8 - 4 * 7);
use shigens::*;
let x = quaternion(2, 3, 4, 5);
let y = x * i(2);
assert_eq!(y.r.get_value(), 3 * 2 * -1);
assert_eq!(y.i.get_value(), 2 * 2);
assert_eq!(y.j.get_value(), 5 * 2);
assert_eq!(y.k.get_value(), 4 * 2 * -1);