47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
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// Copyright 2013 The Lmath Developers. For a full listing of the authors,
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// refer to the AUTHORS file at the top-level directory of this distribution.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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use vec::Vec3;
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use point::Point3;
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/// A three-dimensional ray
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///
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/// # Fields
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///
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/// - `pos`: the endpoint of the ray
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/// - `dir`: the direction vector
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#[deriving(Eq)]
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pub struct Ray3<T> {
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pos: Point3<T>,
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dir: Vec3<T>,
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}
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impl<T:Copy + Eq + ApproxEq<T>> ApproxEq<T> for Ray3<T> {
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#[inline]
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pub fn approx_epsilon() -> T {
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ApproxEq::approx_epsilon::<T,T>()
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}
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#[inline]
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pub fn approx_eq(&self, other: &Ray3<T>) -> bool {
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self.approx_eq_eps(other, &ApproxEq::approx_epsilon::<T,T>())
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}
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#[inline]
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pub fn approx_eq_eps(&self, other: &Ray3<T>, epsilon: &T) -> bool {
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self.pos.approx_eq_eps(&other.pos, epsilon) &&
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self.dir.approx_eq_eps(&other.dir, epsilon)
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}
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}
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