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use std::mem;
use std::vec::IntoIter;
use bounding_volume::{self, BoundingVolume, AABB};
use math::{Isometry, Point};
use na::Real;
use pipeline::broad_phase::{
BroadPhase, BroadPhasePairFilter, BroadPhasePairFilters, DBVTBroadPhase, ProxyHandle,
};
use pipeline::events::{ContactEvent, ContactEvents, ProximityEvents};
use pipeline::narrow_phase::{
ContactAlgorithm, ContactManifolds, ContactPairs, DefaultContactDispatcher, DefaultNarrowPhase,
DefaultProximityDispatcher, NarrowPhase, ProximityPairs,
};
use pipeline::world::{
CollisionGroups, CollisionGroupsPairFilter, CollisionObject, CollisionObjectHandle,
CollisionObjectSlab, CollisionObjects, GeometricQueryType,
};
use query::{PointQuery, Ray, RayCast, RayIntersection};
use shape::ShapeHandle;
pub type NarrowPhaseObject<N, T> = Box<NarrowPhase<N, T>>;
pub type BroadPhaseObject<N> = Box<BroadPhase<N, AABB<N>, CollisionObjectHandle>>;
pub struct CollisionWorld<N: Real, T> {
objects: CollisionObjectSlab<N, T>,
broad_phase: BroadPhaseObject<N>,
narrow_phase: Box<NarrowPhase<N, T>>,
contact_events: ContactEvents,
proximity_events: ProximityEvents,
pair_filters: BroadPhasePairFilters<N, T>,
timestamp: usize, }
impl<N: Real, T> CollisionWorld<N, T> {
pub fn new(margin: N) -> CollisionWorld<N, T> {
let objects = CollisionObjectSlab::new();
let coll_dispatcher = Box::new(DefaultContactDispatcher::new());
let prox_dispatcher = Box::new(DefaultProximityDispatcher::new());
let broad_phase = Box::new(DBVTBroadPhase::<N, AABB<N>, CollisionObjectHandle>::new(
margin,
));
let narrow_phase = DefaultNarrowPhase::new(coll_dispatcher, prox_dispatcher);
CollisionWorld {
contact_events: ContactEvents::new(),
proximity_events: ProximityEvents::new(),
objects: objects,
broad_phase: broad_phase,
narrow_phase: Box::new(narrow_phase),
pair_filters: BroadPhasePairFilters::new(),
timestamp: 0,
}
}
pub fn add(
&mut self,
position: Isometry<N>,
shape: ShapeHandle<N>,
collision_groups: CollisionGroups,
query_type: GeometricQueryType<N>,
data: T,
) -> CollisionObjectHandle {
let mut co = CollisionObject::new(
CollisionObjectHandle::invalid(),
ProxyHandle::invalid(),
position,
shape,
collision_groups,
query_type,
data,
);
co.timestamp = self.timestamp;
let handle = self.objects.insert(co);
let co = &mut self.objects[handle];
let mut aabb = bounding_volume::aabb(co.shape().as_ref(), co.position());
aabb.loosen(co.query_type().query_limit());
let proxy_handle = self.broad_phase.create_proxy(aabb, handle);
co.set_handle(handle);
co.set_proxy_handle(proxy_handle);
handle
}
pub fn update(&mut self) {
self.clear_events();
self.perform_broad_phase();
self.perform_narrow_phase();
}
pub fn clear_events(&mut self) {
self.contact_events.clear();
self.proximity_events.clear();
}
pub fn remove(&mut self, handles: &[CollisionObjectHandle]) {
{
let mut proxy_handles = Vec::new();
for handle in handles {
let co = self
.objects
.get(*handle)
.expect("Removal: collision object not found.");
proxy_handles.push(co.proxy_handle());
}
let nf = &mut self.narrow_phase;
let objects = &mut self.objects;
self.broad_phase.remove(&proxy_handles, &mut |b1, b2| {
nf.handle_removal(objects, *b1, *b2)
});
}
for handle in handles {
let _ = self.objects.remove(*handle);
}
let objects = &self.objects;
self.proximity_events
.retain(|e| objects.contains(e.collider1) && objects.contains(e.collider2));
self.contact_events.retain(|e| match *e {
ContactEvent::Started(co1, co2) | ContactEvent::Stopped(co1, co2) => {
objects.contains(co1) && objects.contains(co2)
}
})
}
pub fn set_position(&mut self, handle: CollisionObjectHandle, pos: Isometry<N>) {
let co = self
.objects
.get_mut(handle)
.expect("Set position: collision object not found.");
co.set_position(pos.clone());
co.timestamp = self.timestamp;
let mut aabb = bounding_volume::aabb(co.shape().as_ref(), &pos);
aabb.loosen(co.query_type().query_limit());
self.broad_phase
.deferred_set_bounding_volume(co.proxy_handle(), aabb);
}
pub fn register_broad_phase_pair_filter<F>(&mut self, name: &str, filter: F)
where
F: BroadPhasePairFilter<N, T>,
{
self.pair_filters
.register_collision_filter(name, Box::new(filter));
self.broad_phase.deferred_recompute_all_proximities();
}
pub fn unregister_broad_phase_pair_filter(&mut self, name: &str) {
if self.pair_filters.unregister_collision_filter(name) {
self.broad_phase.deferred_recompute_all_proximities();
}
}
pub fn perform_broad_phase(&mut self) {
let bf = &mut self.broad_phase;
let nf = &mut self.narrow_phase;
let sig = &mut self.contact_events;
let prox = &mut self.proximity_events;
let filts = &self.pair_filters;
let objs = &self.objects;
bf.update(
&mut |b1, b2| CollisionWorld::filter_collision(filts, objs, *b1, *b2),
&mut |b1, b2, started| nf.handle_interaction(sig, prox, objs, *b1, *b2, started),
);
}
pub fn perform_narrow_phase(&mut self) {
self.narrow_phase.update(
&self.objects,
&mut self.contact_events,
&mut self.proximity_events,
self.timestamp,
);
self.timestamp = self.timestamp + 1;
}
pub fn set_narrow_phase(
&mut self,
narrow_phase: Box<NarrowPhase<N, T>>,
) -> Box<NarrowPhase<N, T>> {
let old = mem::replace(&mut self.narrow_phase, narrow_phase);
self.broad_phase.deferred_recompute_all_proximities();
old
}
#[inline]
pub fn contact_pair(
&self,
handle1: CollisionObjectHandle,
handle2: CollisionObjectHandle,
) -> Option<&ContactAlgorithm<N>> {
self.narrow_phase.contact_pair(handle1, handle2)
}
#[inline]
pub fn contact_pairs(&self) -> ContactPairs<N, T> {
self.narrow_phase.contact_pairs(&self.objects)
}
#[inline]
pub fn proximity_pairs(&self) -> ProximityPairs<N, T> {
self.narrow_phase.proximity_pairs(&self.objects)
}
#[inline]
pub fn contact_manifolds(&self) -> ContactManifolds<N, T> {
self.narrow_phase
.contact_pairs(&self.objects)
.contact_manifolds()
}
#[inline]
pub fn collision_objects(&self) -> CollisionObjects<N, T> {
self.objects.iter()
}
#[inline]
pub fn collision_object(
&self,
handle: CollisionObjectHandle,
) -> Option<&CollisionObject<N, T>> {
self.objects.get(handle)
}
#[inline]
pub fn collision_object_mut(
&mut self,
handle: CollisionObjectHandle,
) -> Option<&mut CollisionObject<N, T>> {
self.objects.get_mut(handle)
}
#[inline]
pub fn set_collision_groups(&mut self, handle: CollisionObjectHandle, groups: CollisionGroups) {
if let Some(co) = self.objects.get_mut(handle) {
co.set_collision_groups(groups);
self.broad_phase
.deferred_recompute_all_proximities_with(co.proxy_handle());
}
}
#[inline]
pub fn interferences_with_ray<'a, 'b>(
&'a self,
ray: &'b Ray<N>,
groups: &'b CollisionGroups,
) -> InterferencesWithRay<'a, 'b, N, T> {
let mut handles = Vec::new();
self.broad_phase.interferences_with_ray(ray, &mut handles);
InterferencesWithRay {
ray: ray,
groups: groups,
objects: &self.objects,
handles: handles.into_iter(),
}
}
#[inline]
pub fn interferences_with_point<'a, 'b>(
&'a self,
point: &'b Point<N>,
groups: &'b CollisionGroups,
) -> InterferencesWithPoint<'a, 'b, N, T> {
let mut handles = Vec::new();
self.broad_phase
.interferences_with_point(point, &mut handles);
InterferencesWithPoint {
point: point,
groups: groups,
objects: &self.objects,
handles: handles.into_iter(),
}
}
#[inline]
pub fn interferences_with_aabb<'a, 'b>(
&'a self,
aabb: &'b AABB<N>,
groups: &'b CollisionGroups,
) -> InterferencesWithAABB<'a, 'b, N, T> {
let mut handles = Vec::new();
self.broad_phase
.interferences_with_bounding_volume(aabb, &mut handles);
InterferencesWithAABB {
groups: groups,
objects: &self.objects,
handles: handles.into_iter(),
}
}
pub fn contact_events(&self) -> &ContactEvents {
&self.contact_events
}
pub fn proximity_events(&self) -> &ProximityEvents {
&self.proximity_events
}
#[inline]
fn filter_collision(
filters: &BroadPhasePairFilters<N, T>,
objects: &CollisionObjectSlab<N, T>,
handle1: CollisionObjectHandle,
handle2: CollisionObjectHandle,
) -> bool {
let o1 = &objects[handle1];
let o2 = &objects[handle2];
let filter_by_groups = CollisionGroupsPairFilter;
filter_by_groups.is_pair_valid(o1, o2) && filters.is_pair_valid(o1, o2)
}
}
pub struct InterferencesWithRay<'a, 'b, N: 'a + Real, T: 'a> {
ray: &'b Ray<N>,
objects: &'a CollisionObjectSlab<N, T>,
groups: &'b CollisionGroups,
handles: IntoIter<&'a CollisionObjectHandle>,
}
impl<'a, 'b, N: Real, T> Iterator for InterferencesWithRay<'a, 'b, N, T> {
type Item = (&'a CollisionObject<N, T>, RayIntersection<N>);
#[inline]
fn next(&mut self) -> Option<Self::Item> {
while let Some(handle) = self.handles.next() {
let co = &self.objects[*handle];
if co.collision_groups().can_interact_with_groups(self.groups) {
let inter = co
.shape()
.toi_and_normal_with_ray(&co.position(), self.ray, true);
if let Some(inter) = inter {
return Some((co, inter));
}
}
}
None
}
}
pub struct InterferencesWithPoint<'a, 'b, N: 'a + Real, T: 'a> {
point: &'b Point<N>,
objects: &'a CollisionObjectSlab<N, T>,
groups: &'b CollisionGroups,
handles: IntoIter<&'a CollisionObjectHandle>,
}
impl<'a, 'b, N: Real, T> Iterator for InterferencesWithPoint<'a, 'b, N, T> {
type Item = &'a CollisionObject<N, T>;
#[inline]
fn next(&mut self) -> Option<Self::Item> {
while let Some(handle) = self.handles.next() {
let co = &self.objects[*handle];
if co.collision_groups().can_interact_with_groups(self.groups)
&& co.shape().contains_point(&co.position(), self.point)
{
return Some(co);
}
}
None
}
}
pub struct InterferencesWithAABB<'a, 'b, N: 'a + Real, T: 'a> {
objects: &'a CollisionObjectSlab<N, T>,
groups: &'b CollisionGroups,
handles: IntoIter<&'a CollisionObjectHandle>,
}
impl<'a, 'b, N: Real, T> Iterator for InterferencesWithAABB<'a, 'b, N, T> {
type Item = &'a CollisionObject<N, T>;
#[inline]
fn next(&mut self) -> Option<Self::Item> {
while let Some(handle) = self.handles.next() {
let co = &self.objects[*handle];
if co.collision_groups().can_interact_with_groups(self.groups) {
return Some(co);
}
}
None
}
}