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valence/src/protocol/byte_angle.rs

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use std::f32::consts::TAU;
use std::io::Write;
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use crate::protocol::{Decode, Encode};
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/// Represents an angle in steps of 1/256 of a full turn.
#[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
pub struct ByteAngle(pub u8);
impl ByteAngle {
pub fn from_degrees(f: f32) -> ByteAngle {
ByteAngle((f.rem_euclid(360.0) / 360.0 * 256.0).round() as u8)
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}
pub fn from_radians(f: f32) -> ByteAngle {
ByteAngle((f.rem_euclid(TAU) / TAU * 256.0).round() as u8)
}
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pub fn to_degrees(self) -> f32 {
self.0 as f32 / 256.0 * 360.0
}
pub fn to_radians(self) -> f32 {
self.0 as f32 / 256.0 * TAU
}
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}
impl Encode for ByteAngle {
fn encode(&self, w: &mut impl Write) -> anyhow::Result<()> {
self.0.encode(w)
}
fn encoded_len(&self) -> usize {
self.0.encoded_len()
}
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}
impl Decode for ByteAngle {
fn decode(r: &mut &[u8]) -> anyhow::Result<Self> {
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u8::decode(r).map(ByteAngle)
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}
}