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use std::cmp::{Eq, Ordering};
use std::hash::{Hash, Hasher};
use result::*;
use point_3d::*;
use traits::is_nd::*;
use traits::is_3d::*;
use traits::is_normalized_3d::*;
use traits::is_buildable_nd::*;
use functions::{sqr_dist_3d};
#[derive (PartialEq, PartialOrd)]
pub struct Norm3D {
pub x: f64,
pub y: f64,
pub z: f64
}
impl Eq for Norm3D{}
impl Ord for Norm3D {
fn cmp(&self, other: &Self) -> Ordering {
let origin = *Point3D::new();
sqr_dist_3d(&origin, self).partial_cmp(&sqr_dist_3d(&origin, other)).unwrap_or(Ordering::Equal)
}
}
impl Hash for Norm3D {
fn hash<H: Hasher>(&self, state: &mut H) {
(self.x as u64).hash(state);
(self.y as u64).hash(state);
(self.z as u64).hash(state);
}
}
impl Clone for Norm3D {
fn clone(&self) -> Self {
Norm3D {
x: self.x,
y: self.y,
z: self.z
}
}
}
impl IsND for Norm3D {
fn n_dimensions() -> usize {
3
}
fn get_position(&self, dimension: usize) -> Result<f64> {
match dimension {
0 => Ok(self.x),
1 => Ok(self.y),
2 => Ok(self.z),
_ => Err(ErrorKind::IncorrectDimension)
}
}
}
impl Is3D for Norm3D {
fn x(&self) -> f64 {
self.x
}
fn y(&self) -> f64 {
self.y
}
fn z(&self) -> f64 {
self.z
}
}
impl IsNormalized3D for Norm3D {
fn new<P>(p: P) -> Result<Box<Self>> where
P: Is3D {
match p.abs() {
0.0 => Err(ErrorKind::NormalizeVecWithoutLength),
l => Ok(Box::new(Norm3D {
x: p.x() / l,
y: p.y() / l,
z: p.z() / l,
}))
}
}
fn norm_x() -> Self {
Norm3D {
x: 1.0,
y: 0.0,
z: 0.0
}
}
fn norm_y() -> Self {
Norm3D {
x: 0.0,
y: 1.0,
z: 0.0
}
}
fn norm_z() -> Self {
Norm3D {
x: 0.0,
y: 0.0,
z: 1.0
}
}
}