Function bitwise::word::morton::encode_2d

pub fn encode_2d<T: Word>(x: T, y: T) -> T

Encode coordinates x and y into an interleaved Morton index for a z-Curve.

Using _.i to denote the i-th bit in a word, given the x and y coordinates with the following bit patterns:

x: |x.M|...|x.1|x.0| y: |y.M|...|y.1|y.0|

where M == T::bit_size(),

this function encodes the bits of x and y into a value v using the Morton z-Curve encoding:

v = |y.N|x.N|...|y.1|x.1|y.0|x.0|

where N == T::bit_size() / 2.

Example

use bitwise::word::morton;

let x = 0b0000_1010u8;
let y = 0b0000_0011u8;
let r = 0b01_00_11_10u8;
assert_eq!(morton::encode_2d(x, y), r);
assert_eq!(morton::encode_2d(x as u32, y as u32), r as u32);
assert_eq!(morton::encode_2d(x as u64, y as u64), r as u64);