hodasemi/cgmath
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Implemented Aabb to_corners()

Browse source
This commit is contained in:
Dzmitry Malyshau 2015-03-13 23:49:22 +03:00
parent 4d71e8aad9
commit 896c357ea8
1 changed files with 29 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
src/aabb.rs
View file

@ -103,6 +103,15 @@ impl<S: BaseNum> Aabb2<S> {
p1.y.partial_max(p2.y)),
}
}
/// Compute corners.
#[inline]
pub fn to_corners(&self) -> [Point2<S>; 4] {
[self.min,
Point2::new(self.max.x, self.min.y),
Point2::new(self.min.x, self.max.y),
self.max]
}
}
impl<S: BaseNum> Aabb<S, Vector2<S>, Point2<S>> for Aabb2<S> {
@ -150,6 +159,19 @@ impl<S: BaseNum> Aabb3<S> {
p1.z.partial_max(p2.z)),
}
}
/// Compute corners.
#[inline]
pub fn to_corners(&self) -> [Point3<S>; 8] {
[self.min,
Point3::new(self.max.x, self.min.y, self.min.z),
Point3::new(self.min.x, self.max.y, self.min.z),
Point3::new(self.max.x, self.max.y, self.min.z),
Point3::new(self.min.x, self.min.y, self.max.z),
Point3::new(self.max.x, self.min.y, self.max.z),
Point3::new(self.min.x, self.max.y, self.max.z),
self.max]
}
}
impl<S: BaseNum> Aabb<S, Vector3<S>, Point3<S>> for Aabb3<S> {
@ -222,11 +244,13 @@ impl<S: BaseFloat> Intersect<Option<Point2<S>>> for (Ray2<S>, Aabb2<S>) {
impl<S: BaseNum> Bound<S> for Aabb3<S> {
fn relate(&self, plane: &Plane<S>) -> Relation {
//TODO: match all 8 corners
match (self.min.relate(plane), self.max.relate(plane)) {
(Relation::In, Relation::In) => Relation::In,
(Relation::Out, Relation::Out) => Relation::Out,
(_, _) => Relation::Cross,
let corners = self.to_corners();
let first = corners[0].relate(plane);
for p in corners[1..].iter() {
if p.relate(plane) != first {
return Relation::Cross;
}
}
first
}
}