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Precompute XRRigidTransform's matrices

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This commit is contained in:
Manish Goregaokar 2019-03-25 23:48:28 -07:00
parent 77e857891a
commit 6fda2f28a6
2 changed files with 27 additions and 14 deletions
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32
components/script/dom/xrrigidtransform.rs
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@ -20,6 +20,10 @@ pub struct XRRigidTransform {
reflector_: Reflector,
position: Dom<DOMPointReadOnly>,
orientation: Dom<DOMPointReadOnly>,
#[ignore_malloc_size_of = "defined in euclid"]
translate: Transform3D<f64>,
#[ignore_malloc_size_of = "defined in euclid"]
rotate: Rotation3D<f64>,
}
impl XRRigidTransform {
@ -27,10 +31,22 @@ impl XRRigidTransform {
position: &DOMPointReadOnly,
orientation: &DOMPointReadOnly,
) -> XRRigidTransform {
let translate = Transform3D::create_translation(
position.X() as f64,
position.Y() as f64,
position.Z() as f64,
);
let rotate = Rotation3D::unit_quaternion(
orientation.X() as f64,
orientation.Y() as f64,
orientation.Z() as f64,
orientation.W() as f64,
);
XRRigidTransform {
reflector_: Reflector::new(),
position: Dom::from_ref(position),
orientation: Dom::from_ref(orientation),
translate, rotate
}
}
@ -86,18 +102,8 @@ impl XRRigidTransformMethods for XRRigidTransform {
impl XRRigidTransform {
pub fn matrix(&self) -> Transform3D<f64> {
// XXXManishearth compute this during initialization
let translate = Transform3D::create_translation(
self.position.X(),
self.position.Y(),
self.position.Z(),
);
let rotation = Rotation3D::unit_quaternion(
self.orientation.X(),
self.orientation.Y(),
self.orientation.Z(),
self.orientation.W(),
);
translate.pre_mul(&rotation.to_transform())
// Spec says the orientation applies first,
// so post-multiply (?)
self.translate.post_mul(&self.rotate.to_transform())
}
}