cgmath/src/geom/aabb.rs

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// 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.
//! Axis-aligned bounding boxes
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use core::{Vec2, AsVec2, Vec3, AsVec3};
use geom::{Point2, Point3};
pub struct AABB2<T> {
center: Point2<T>,
size: Vec2<T>,
}
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impl_approx!(AABB2 { center, size })
impl<T> AABB2<T> {
#[inline]
pub fn new(center: Point2<T>, size: Vec2<T>) -> AABB2<T> {
AABB2 { center: center, size: size }
}
}
impl<T:Clone + Float> AABB2<T> {
#[inline]
pub fn from_bounds(mn: Point2<T>, mx: Point2<T>) -> AABB2<T> {
AABB2 {
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center: Point2::from_vec2(mn.as_vec2().add_v(mx.as_vec2()).div_t(two!(T))),
size: mx - mn,
}
}
}
pub struct AABB3<T> {
center: Point3<T>,
size: Vec3<T>,
}
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impl_approx!(AABB3 { center, size })
impl<T> AABB3<T> {
#[inline]
pub fn new(center: Point3<T>, size: Vec3<T>) -> AABB3<T> {
AABB3 { center: center, size: size }
}
}
impl<T:Clone + Float> AABB3<T> {
#[inline]
pub fn from_bounds(mn: Point3<T>, mx: Point3<T>) -> AABB3<T> {
AABB3 {
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center: Point3::from_vec3(mn.as_vec3().add_v(mx.as_vec3()).div_t(two!(T))),
size: mx - mn,
}
}
}