use {
super::ValueError,
crate::result::{Error, Result},
regex::Regex,
serde::{Deserialize, Serialize},
std::fmt,
};
#[derive(Copy, Debug, Clone, Serialize, Deserialize)]
pub struct Point {
pub x: f64,
pub y: f64,
}
impl Point {
pub fn new(x: f64, y: f64) -> Self {
Self { x, y }
}
pub fn from_wkt(v: &str) -> Result<Self> {
let re = Regex::new(r"POINT\s*\(\s*(-?\d*\.?\d+)\s+(-?\d*\.?\d+)\s*\)").unwrap();
if let Some(captures) = re.captures(v) {
let x = captures[1]
.parse::<f64>()
.map_err(|_| Error::Value(ValueError::FailedToParsePoint(v.to_owned())))?;
let y = captures[2]
.parse::<f64>()
.map_err(|_| Error::Value(ValueError::FailedToParsePoint(v.to_owned())))?;
Ok(Self { x, y })
} else {
Err(Error::Value(ValueError::FailedToParsePoint(v.to_owned())))
}
}
pub fn calc_distance(&self, other: &Point) -> f64 {
let dx = self.x - other.x;
let dy = self.y - other.y;
f64::sqrt(dx * dx + dy * dy)
}
}
impl PartialEq for Point {
fn eq(&self, other: &Self) -> bool {
self.x == other.x && self.y == other.y
}
}
impl Eq for Point {}
impl fmt::Display for Point {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "POINT({} {})", self.x, self.y)
}
}