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use std::cmp::{Eq, Ordering};
use prelude::*;
use distances_2d::*;
#[derive (Debug, PartialEq, PartialOrd, Clone, Hash, Default)]
pub struct Box2D {
pub center: Point2D,
pub size_x: Positive,
pub size_y: Positive
}
impl Eq for Box2D {}
impl Ord for Box2D {
fn cmp(&self, other: &Self) -> Ordering {
let origin = Point2D::default();
match sqr_dist_2d(&origin, &self.center).partial_cmp(&sqr_dist_2d(&origin, &other.center)) {
Some(x) => x,
None => match self.size_x.partial_cmp(&other.size_x) {
Some(x) => x,
None => self.size_y.partial_cmp(&other.size_y).unwrap_or(Ordering::Equal)
}
}
}
}
impl IsND for Box2D {
fn n_dimensions() -> usize {
Point2D::n_dimensions()
}
fn get_position(&self, dimension: usize) -> Result<f64> {
self.center.get_position(dimension)
}
}
impl Is2D for Box2D {
fn x(&self) -> f64 {
self.center.x()
}
fn y(&self) -> f64 {
self.center.y()
}
}
impl IsBuildableND for Box2D {
fn new_nd(coords: &Vec<f64>) -> Result<Self> {
Ok(Box2D{center: Point2D::new_nd(coords)?, size_x: Positive::one(), size_y: Positive::one()})
}
fn from_nd<P>(&mut self, other: P) -> Result<()> where
P: IsBuildableND {
self.center.from_nd(other)
}
}
impl IsBuildable2D for Box2D {
fn new(x: f64, y: f64) -> Self {
Box2D{center: Point2D{x: x, y: y}, size_x: Positive::one(), size_y: Positive::one()}
}
fn from<P>(&mut self, other: P) where
P: Is2D {
self.center.from(other)
}
}
impl IsEditableND for Box2D {
fn set_position(&mut self, dimension: usize, val: f64) -> Result<()> {
self.center.set_position(dimension, val)
}
}
impl IsEditable2D for Box2D {
fn set_x(&mut self, val: f64) {
self.center.set_x(val);
}
fn set_y(&mut self, val: f64) {
self.center.set_y(val);
}
}
impl HasBoundingBox2D for Box2D {
fn bounding_box(&self) -> Result<BoundingBox2D> {
let p_min = Point2D{x: self.center.x() - self.size_x.get() / 2.0, y: self.center.y() - self.size_y.get() / 2.0};
let p_max = Point2D{x: self.center.x() + self.size_x.get() / 2.0, y: self.center.y() + self.size_y.get() / 2.0};
BoundingBox2D::new(&p_min, &p_max)
}
}
impl From<BoundingBox2D> for Box2D {
fn from(x: BoundingBox2D) -> Self {
Box2D{center: x.center_bb(), size_x: x.size_x(), size_y: x.size_y()}
}
}