ncollide3d/utils/
ref_with_cost.rs

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1//! A reference packed with a cost value.
2
3use std::cmp::Ordering;
4
5/// A reference packed with a cost value.
6pub struct RefWithCost<'a, N, T: 'a> {
7    /// The reference to an object.
8    pub object: &'a T,
9    /// The cost of the object.
10    pub cost: N,
11}
12
13impl<'a, N, T> RefWithCost<'a, N, T> {
14    /// Creates a new reference packed with a cost value.
15    #[inline]
16    pub fn new(object: &'a T, cost: N) -> RefWithCost<'a, N, T> {
17        RefWithCost {
18            object: object,
19            cost: cost,
20        }
21    }
22}
23
24impl<'a, N: PartialEq, T> PartialEq for RefWithCost<'a, N, T> {
25    #[inline]
26    fn eq(&self, other: &RefWithCost<'a, N, T>) -> bool {
27        self.cost.eq(&other.cost)
28    }
29}
30
31impl<'a, N: PartialEq, T> Eq for RefWithCost<'a, N, T> {}
32
33impl<'a, N: PartialOrd, T> PartialOrd for RefWithCost<'a, N, T> {
34    #[inline]
35    fn partial_cmp(&self, other: &RefWithCost<'a, N, T>) -> Option<Ordering> {
36        self.cost.partial_cmp(&other.cost)
37    }
38}
39
40impl<'a, N: PartialOrd, T> Ord for RefWithCost<'a, N, T> {
41    #[inline]
42    fn cmp(&self, other: &RefWithCost<'a, N, T>) -> Ordering {
43        if self.cost < other.cost {
44            Ordering::Less
45        } else if self.cost > other.cost {
46            Ordering::Greater
47        } else {
48            Ordering::Equal
49        }
50    }
51}
ncollide3d/utils/ref_with_cost.rs

ncollide3d/utils/
ref_with_cost.rs
