added line project

This commit is contained in:
Sven Vogel 2023-05-03 10:34:57 +02:00
parent ad2bf148c3
commit 4342c25e3e
5 changed files with 107 additions and 3 deletions

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@ -14,9 +14,7 @@
* Licensed under the GPLv2 License, Version 2.0 (the "License");
* Copyright (c) Sven Vogel
*/
use crate::FloatOrChar::{Char, Float};
use std::collections::{HashMap, HashSet};
use std::fmt::Debug;
use std::usize;

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@ -16,6 +16,7 @@
*/
/// recursive variant of the fibonacci function
#[allow(dead_code)]
fn fib_rec(x: u128) -> u128 {
if x < 2 {
return x;
@ -29,7 +30,7 @@ fn fib_loop(x: u128) -> u128 {
let mut sum = 0;
let mut sum2 = 1;
for x in 0..(x - 1) {
for _ in 0..(x - 1) {
let t = sum;
sum = sum2;
sum2 = t + sum;

8
line/Cargo.toml Normal file
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@ -0,0 +1,8 @@
[package]
name = "line"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]

96
line/src/main.rs Normal file
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@ -0,0 +1,96 @@
/**
* _ _ _ _
* __ ___ __(_) |_| |_ ___ _ __ | |__ _ _
* \ \ /\ / / '__| | __| __/ _ \ '_ \ | '_ \| | | |
* \ V V /| | | | |_| || __/ | | | | |_) | |_| |
* \_/\_/ |_| |_|\__|\__\___|_| |_| |_.__/ \__, |
* |___/
* ____ __ __ _
* / ___|_ _____ _ __ \ \ / /__ __ _ ___| |
* \___ \ \ / / _ \ '_ \ \ \ / / _ \ / _` |/ _ \ |
* ___) \ V / __/ | | | \ V / (_) | (_| | __/ |
* |____/ \_/ \___|_| |_| \_/ \___/ \__, |\___|_|
* |___/
* Licensed under the GPLv2 License, Version 2.0 (the "License");
* Copyright (c) Sven Vogel
*/
use std::cmp::PartialOrd;
use std::ops::{Add, Div, Mul, Sub};
trait Calculate:
Mul<Output = Self> + Add<Output = Self> + Sub<Output = Self> + Div<Output = Self> + Copy
{
}
impl<T> Calculate for T where
T: Mul<Output = Self> + Add<Output = Self> + Sub<Output = Self> + Div<Output = Self> + Copy
{
}
struct Point<T: Mul<Output = T> + Add<Output = T> + Copy> {
x: T,
y: T,
}
#[allow(dead_code)]
impl<T: Mul<Output = T> + Add<Output = T> + Copy> Point<T> {
fn squared_dist_to_0(&self) -> T {
self.x * self.x + self.y * self.y
}
}
trait MeasureDistanceTo0<T: Calculate> {
fn squared_dist_to_0(&self) -> T;
}
struct Line<T: Calculate> {
p: Point<T>,
n: Point<T>,
}
impl<T: Calculate + Default> MeasureDistanceTo0<T> for Line<T> {
fn squared_dist_to_0(&self) -> T {
let len = self.n.x * self.n.x + self.n.y * self.n.y;
let normalized = Point {
x: self.n.x / len,
y: self.n.y / len,
};
normalized.x * self.p.x + normalized.y * self.p.y
}
}
impl<T: Calculate + Default> Line<T> {
pub fn new() -> Self {
Self {
p: Point {
x: Default::default(),
y: Default::default(),
},
n: Point {
x: Default::default(),
y: Default::default(),
},
}
}
}
fn longest_dist_to_0<T>(p1: Line<T>, p2: Line<T>) -> T
where
T: Calculate + Default + PartialOrd,
{
let d1 = p1.squared_dist_to_0();
let d2 = p2.squared_dist_to_0();
if d1 > d2 {
d1
} else {
d2
}
}
fn main() {
let l0: Line<f64> = Line::new();
let l1: Line<f64> = Line::new();
println!("{:?}", longest_dist_to_0(l0, l1));
}

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@ -28,6 +28,7 @@ fn merge_tuple(a: (f64, f64), b: (f64, f64), f: fn(a: f64, b: f64) -> f64) -> (f
(f(a.0, b.0), f(a.1, b.1))
}
#[allow(dead_code)]
fn add_tuple(a: (f64, f64), b: (f64, f64)) -> (f64, f64) {
merge_tuple(a, b, |a, b| a + b)
}