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use crate::{Number, Float};
use crate::vector::Vector2;
use std::cmp;
pub struct Bound2<T: Number> {
pub min: Vector2<T>,
pub max: Vector2<T>
}
pub type Bound2i = Bound2<i32>;
pub type Bound2f = Bound2<Float>;
fn min<T: Number> (a: T, b: T) -> T {
if b < a {
return b;
}
a
}
fn max<T: Number> (a: T, b: T) -> T {
if b > a {
return b;
}
a
}
impl<T: Number> Bound2<T> {
fn new(p0: &Vector2<T>, p1: &Vector2<T>) -> Bound2<T> {
let min = Vector2::from_xy(min(p0.x, p1.x), min(p0.y, p1.y));
let max = Vector2::from_xy(max(p0.x, p1.x), max(p0.y, p1.y));
Bound2 { min, max }
}
fn diagonal(&self) -> Vector2<T> {
self.max - self.min
}
fn area(&self) -> T {
let diag = self.diagonal();
return diag.x * diag.y;
}
}
#[cfg(test)]
mod tests {
use super::*;
fn create_test() -> Bound2<i32> {
Bound2::new(
&Vector2::from_xy(1, 2),
&Vector2::from_xy(10, 3)
)
}
#[test]
fn area() {
let b = create_test();
assert!(b.area() == 9);
}
}
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