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Some tunning of the way layers are attributed to a collider.

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Crozet Sébastien
2021-03-13 19:19:12 +01:00
parent 3a1502be74
commit b2c0f62003
1 changed files with 9 additions and 4 deletions
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13
src/geometry/broad_phase_multi_sap/sap_utils.rs
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@@ -5,8 +5,8 @@ pub(crate) const NUM_SENTINELS: usize = 1;
pub(crate) const NEXT_FREE_SENTINEL: u32 = u32::MAX; pub(crate) const NEXT_FREE_SENTINEL: u32 = u32::MAX;
pub(crate) const SENTINEL_VALUE: Real = Real::MAX; pub(crate) const SENTINEL_VALUE: Real = Real::MAX;
pub(crate) const DELETED_AABB_VALUE: Real = SENTINEL_VALUE / 2.0; pub(crate) const DELETED_AABB_VALUE: Real = SENTINEL_VALUE / 2.0;
pub(crate) const REGION_WIDTH_BASE: Real = 20.0; pub(crate) const REGION_WIDTH_BASE: Real = 1.0;
pub(crate) const REGION_WIDTH_POWER_BASIS: Real = 8.0; pub(crate) const REGION_WIDTH_POWER_BASIS: Real = 10.0;
pub(crate) fn sort2(a: u32, b: u32) -> (u32, u32) { pub(crate) fn sort2(a: u32, b: u32) -> (u32, u32) {
assert_ne!(a, b); assert_ne!(a, b);
@@ -36,7 +36,12 @@ pub(crate) fn region_width(depth: i8) -> Real {
} }
pub(crate) fn layer_containing_aabb(aabb: &AABB) -> i8 { pub(crate) fn layer_containing_aabb(aabb: &AABB) -> i8 {
let width = 2.0 * aabb.half_extents().norm(); // Max number of elements of this size we would like one region to be able to contain.
const NUM_ELEMENTS_PER_DIMENSION: Real = 10.0;
let width = 2.0 * aabb.half_extents().norm() * NUM_ELEMENTS_PER_DIMENSION;
// TODO: handle overflows in the f32 -> i8 conversion. // TODO: handle overflows in the f32 -> i8 conversion.
(width / REGION_WIDTH_BASE).log(REGION_WIDTH_POWER_BASIS) as i8 (width / REGION_WIDTH_BASE)
.log(REGION_WIDTH_POWER_BASIS)
.round() as i8
} }