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beevee: bvh: remove reference to objects in BVH

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This commit is contained in:
Bruno BELANYI 2020-03-24 20:29:29 +01:00
parent 69779d7dd4
commit 45fca6f3ed
1 changed files with 12 additions and 10 deletions
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22
beevee/src/bvh/tree.rs
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@ -25,12 +25,11 @@ struct Node {
///
/// [`Bounded`]: ../aabb/trait.Bounded.html
#[derive(Clone, Debug, PartialEq)]
pub struct BVH<'o, O: Bounded> {
objects: &'o [O],
pub struct BVH {
tree: Node,
}
impl<'o, O: Bounded> BVH<'o, O> {
impl BVH {
/// Build a [`BVH`] for the given slice of objects.
/// Each leaf node will be built in a way to try and contain less than 32 objects.
///
@ -40,6 +39,7 @@ impl<'o, O: Bounded> BVH<'o, O> {
/// use beevee::aabb::{AABB, Bounded};
/// use beevee::bvh::BVH;
///
/// #[derive(Clone, Debug, PartialEq)]
/// struct Sphere {
/// center: Point,
/// radius: f32,
@ -58,7 +58,7 @@ impl<'o, O: Bounded> BVH<'o, O> {
/// let spheres: &mut [Sphere] = &mut [Sphere{ center: Point::origin(), radius: 2.5 }];
/// let bvh = BVH::build(spheres);
/// ```
pub fn build(objects: &'o mut [O]) -> Self {
pub fn build<O: Bounded>(objects: &mut [O]) -> Self {
Self::with_max_capacity(objects, 32)
}
@ -72,6 +72,7 @@ impl<'o, O: Bounded> BVH<'o, O> {
/// use beevee::aabb::{AABB, Bounded};
/// use beevee::bvh::BVH;
///
/// #[derive(Clone, Debug, PartialEq)]
/// struct Sphere {
/// center: Point,
/// radius: f32,
@ -90,9 +91,9 @@ impl<'o, O: Bounded> BVH<'o, O> {
/// let spheres: &mut [Sphere] = &mut [Sphere{ center: Point::origin(), radius: 2.5 }];
/// let bvh = BVH::with_max_capacity(spheres, 32);
/// ```
pub fn with_max_capacity(objects: &'o mut [O], max_cap: usize) -> Self {
pub fn with_max_capacity<O: Bounded>(objects: &mut [O], max_cap: usize) -> Self {
let tree = build_node(objects, 0, objects.len(), max_cap);
Self { objects, tree }
Self { tree }
}
/// Return the true if the [`BVH`] has been built soundly:
@ -106,6 +107,7 @@ impl<'o, O: Bounded> BVH<'o, O> {
/// # use beevee::aabb::{AABB, Bounded};
/// # use beevee::bvh::BVH;
/// #
/// # #[derive(Clone, Debug, PartialEq)]
/// # struct Sphere {
/// # center: Point,
/// # radius: f32,
@ -124,9 +126,10 @@ impl<'o, O: Bounded> BVH<'o, O> {
/// // Using the same sphere definition than build
/// let spheres: &mut [Sphere] = &mut [Sphere{ center: Point::origin(), radius: 2.5 }];
/// let bvh = BVH::with_max_capacity(spheres, 32);
/// assert!(bvh.is_sound());
/// assert!(bvh.is_sound(spheres));
/// ```
pub fn is_sound(&self) -> bool {
pub fn is_sound<O: Bounded>(&self, objects: &[O]) -> bool {
fn check_node<O: Bounded>(objects: &[O], node: &Node) -> bool {
if node.begin > node.end {
return false;
@ -146,7 +149,7 @@ impl<'o, O: Bounded> BVH<'o, O> {
}
}
};
check_node(self.objects, &self.tree)
check_node(objects, &self.tree)
}
}
@ -220,7 +223,6 @@ fn compute_sah<O: Bounded>(objects: &mut [O], surface: f32, max_cap: usize) -> (
left_surfaces.clear();
right_surfaces.clear();
// Sort in order along the axis
// FIXME: use parallel sort
objects.sort_by(|lhs, rhs| {
lhs.centroid()[axis]
.partial_cmp(&rhs.centroid()[axis])