2013-06-16 07:34:09 +00:00
|
|
|
// Copyright 2013 The Lmath Developers. For a full listing of the authors,
|
|
|
|
// refer to the AUTHORS file at the top-level directory of this distribution.
|
|
|
|
//
|
|
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
// you may not use this file except in compliance with the License.
|
|
|
|
// You may obtain a copy of the License at
|
|
|
|
//
|
|
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
//
|
|
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
// See the License for the specific language governing permissions and
|
|
|
|
// limitations under the License.
|
|
|
|
|
2013-07-08 07:00:38 +00:00
|
|
|
use core::{Vec2, Vec3};
|
2013-06-16 07:34:09 +00:00
|
|
|
|
|
|
|
/// A geometric point
|
|
|
|
pub trait Point<T,V>: Eq + ApproxEq<T> + ToStr {
|
|
|
|
pub fn translate(&self, offset: &V) -> Self;
|
|
|
|
pub fn distance(&self, other: &Self) -> T;
|
|
|
|
}
|
|
|
|
|
|
|
|
/// A two-dimensional point
|
2013-06-29 06:38:55 +00:00
|
|
|
#[deriving(Clone, Eq)]
|
2013-06-16 07:34:09 +00:00
|
|
|
pub struct Point2<T>(Vec2<T>);
|
|
|
|
|
|
|
|
impl<T> Point2<T> {
|
|
|
|
pub fn new(x: T, y: T) -> Point2<T> {
|
|
|
|
Point2(Vec2::new(x, y))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-29 06:38:55 +00:00
|
|
|
impl<T:Clone + Real> Point<T,Vec2<T>> for Point2<T> {
|
2013-06-16 07:34:09 +00:00
|
|
|
pub fn translate(&self, offset: &Vec2<T>) -> Point2<T> {
|
|
|
|
Point2(self.add_v(offset))
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn distance(&self, other: &Point2<T>) -> T {
|
|
|
|
(**self).distance(&**other)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-07-08 07:00:38 +00:00
|
|
|
impl<T:Clone + Eq + ApproxEq<T>> ApproxEq<T> for Point2<T> {
|
|
|
|
#[inline]
|
|
|
|
pub fn approx_epsilon() -> T {
|
|
|
|
ApproxEq::approx_epsilon::<T,T>()
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
pub fn approx_eq(&self, other: &Point2<T>) -> bool {
|
|
|
|
self.approx_eq_eps(other, &ApproxEq::approx_epsilon::<T,T>())
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
pub fn approx_eq_eps(&self, other: &Point2<T>, epsilon: &T) -> bool {
|
|
|
|
(**self).approx_eq_eps(&**other, epsilon)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-16 07:34:09 +00:00
|
|
|
impl<T> ToStr for Point2<T> {
|
|
|
|
pub fn to_str(&self) -> ~str {
|
|
|
|
fmt!("[%?, %?]", self.x, self.y)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-07-08 07:00:38 +00:00
|
|
|
#[cfg(test)]
|
|
|
|
mod test_point2 {
|
|
|
|
use geom::point::*;
|
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_to_str() {
|
|
|
|
assert_eq!(Point2::new(1, 2).to_str(), ~"[1, 2]");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-16 07:34:09 +00:00
|
|
|
/// A three-dimensional point
|
2013-06-29 06:38:55 +00:00
|
|
|
#[deriving(Clone, Eq)]
|
2013-06-16 07:34:09 +00:00
|
|
|
pub struct Point3<T>(Vec3<T>);
|
|
|
|
|
|
|
|
impl<T> Point3<T> {
|
|
|
|
pub fn new(x: T, y: T, z: T) -> Point3<T> {
|
|
|
|
Point3(Vec3::new(x, y, z))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-06-29 06:38:55 +00:00
|
|
|
impl<T:Clone + Real> Point<T,Vec3<T>> for Point3<T> {
|
2013-06-16 07:34:09 +00:00
|
|
|
pub fn translate(&self, offset: &Vec3<T>) -> Point3<T> {
|
|
|
|
Point3(self.add_v(offset))
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn distance(&self, other: &Point3<T>) -> T {
|
|
|
|
(**self).distance(&**other)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-07-08 07:00:38 +00:00
|
|
|
impl<T:Clone + Eq + ApproxEq<T>> ApproxEq<T> for Point3<T> {
|
|
|
|
#[inline]
|
|
|
|
pub fn approx_epsilon() -> T {
|
|
|
|
ApproxEq::approx_epsilon::<T,T>()
|
2013-06-16 07:34:09 +00:00
|
|
|
}
|
|
|
|
|
2013-07-08 07:00:38 +00:00
|
|
|
#[inline]
|
|
|
|
pub fn approx_eq(&self, other: &Point3<T>) -> bool {
|
|
|
|
self.approx_eq_eps(other, &ApproxEq::approx_epsilon::<T,T>())
|
|
|
|
}
|
2013-06-16 07:34:09 +00:00
|
|
|
|
2013-07-08 07:00:38 +00:00
|
|
|
#[inline]
|
|
|
|
pub fn approx_eq_eps(&self, other: &Point3<T>, epsilon: &T) -> bool {
|
|
|
|
(**self).approx_eq_eps(&**other, epsilon)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl<T> ToStr for Point3<T> {
|
|
|
|
pub fn to_str(&self) -> ~str {
|
|
|
|
fmt!("[%?, %?, %?]", self.x, self.y, self.z)
|
2013-06-16 07:34:09 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#[cfg(test)]
|
|
|
|
mod test_point3 {
|
2013-07-08 07:00:38 +00:00
|
|
|
use geom::point::*;
|
2013-06-16 07:34:09 +00:00
|
|
|
|
|
|
|
#[test]
|
|
|
|
fn test_to_str() {
|
|
|
|
assert_eq!(Point3::new(1, 2, 3).to_str(), ~"[1, 2, 3]");
|
|
|
|
}
|
|
|
|
}
|