Add vector

This commit is contained in:
Rico Riedel 2022-07-29 15:49:16 +02:00
parent 8cd6e4d50f
commit afe3dc4122
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GPG Key ID: 75AC868575DE7B18
4 changed files with 83 additions and 1 deletions

10
Cargo.lock generated
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@ -11,6 +11,15 @@ dependencies = [
"memchr",
]
[[package]]
name = "approx"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
dependencies = [
"num-traits",
]
[[package]]
name = "autocfg"
version = "1.1.0"
@ -424,6 +433,7 @@ checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
name = "wipe"
version = "2.0.0"
dependencies = [
"approx",
"crossterm",
"mockall",
]

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@ -10,4 +10,5 @@ authors = ["Rico Riedel"]
crossterm = "0.24"
[dev-dependencies]
mockall = "0.11"
mockall = "0.11"
approx = "0.5"

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@ -1,6 +1,8 @@
pub mod error;
mod pattern;
pub mod printer;
pub mod term;
mod vec;
fn main() -> Result<(), error::Error> {
Ok(())

69
src/vec.rs Normal file
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@ -0,0 +1,69 @@
use std::ops::Sub;
#[derive(Copy, Clone, PartialEq, Debug)]
pub struct Vector {
pub x: f32,
pub y: f32,
}
impl Vector {
pub fn new(x: f32, y: f32) -> Self {
Self { x, y }
}
pub fn len(&self) -> f32 {
(self.x * self.x + self.y * self.y).sqrt()
}
pub fn center(&self) -> Vector {
Self::new(self.x / 2.0, self.y / 2.0)
}
pub fn angle(&self) -> f32 {
self.y.atan2(self.x)
}
}
impl Sub for Vector {
type Output = Vector;
fn sub(self, rhs: Self) -> Self::Output {
Self::new(self.x - rhs.x, self.y - rhs.y)
}
}
#[cfg(test)]
mod test {
use super::*;
use approx::*;
#[test]
fn new() {
let v = Vector::new(4.0, 7.0);
assert_eq!(4.0, v.x);
assert_eq!(7.0, v.y);
}
#[test]
fn len() {
assert_abs_diff_eq!(8.5, Vector::new(3.0, 8.0).len(), epsilon = 0.1);
}
#[test]
fn center() {
assert_eq!(Vector::new(4.0, 9.0), Vector::new(8.0, 18.0).center());
}
#[test]
fn angle() {
assert_abs_diff_eq!(-1.5, Vector::new(2.0, -20.0).angle(), epsilon = 0.1);
}
#[test]
fn sub() {
assert_eq!(
Vector::new(-5.0, 10.0),
Vector::new(3.0, 16.0) - Vector::new(8.0, 6.0)
);
}
}