nalgebra/src/geometry/isometry_conversion.rs

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use simba::scalar::{RealField, SubsetOf, SupersetOf};
use simba::simd::{PrimitiveSimdValue, SimdRealField, SimdValue};
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use crate::base::allocator::Allocator;
use crate::base::dimension::{DimMin, DimNameAdd, DimNameSum, U1};
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use crate::base::{Const, DefaultAllocator, OMatrix, Scalar};
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use crate::geometry::{
AbstractRotation, Isometry, Isometry3, Similarity, SuperTCategoryOf, TAffine, Transform,
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Translation, UnitDualQuaternion, UnitQuaternion,
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};
use crate::{Point, SVector};
/*
* This file provides the following conversions:
* =============================================
*
* Isometry -> Isometry
* Isometry3 -> UnitDualQuaternion
* Isometry -> Similarity
* Isometry -> Transform
* Isometry -> Matrix (homogeneous)
*/
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impl<T1, T2, R1, R2, const D: usize> SubsetOf<Isometry<T2, R2, D>> for Isometry<T1, R1, D>
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where
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T1: RealField,
T2: RealField + SupersetOf<T1>,
R1: AbstractRotation<T1, D> + SubsetOf<R2>,
R2: AbstractRotation<T2, D>,
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{
#[inline]
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fn to_superset(&self) -> Isometry<T2, R2, D> {
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Isometry::from_parts(self.translation.to_superset(), self.rotation.to_superset())
}
#[inline]
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fn is_in_subset(iso: &Isometry<T2, R2, D>) -> bool {
crate::is_convertible::<_, Translation<T1, D>>(&iso.translation)
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&& crate::is_convertible::<_, R1>(&iso.rotation)
}
#[inline]
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fn from_superset_unchecked(iso: &Isometry<T2, R2, D>) -> Self {
Isometry::from_parts(
iso.translation.to_subset_unchecked(),
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iso.rotation.to_subset_unchecked(),
)
}
}
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impl<T1, T2> SubsetOf<UnitDualQuaternion<T2>> for Isometry3<T1>
where
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T1: RealField,
T2: RealField + SupersetOf<T1>,
{
#[inline]
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fn to_superset(&self) -> UnitDualQuaternion<T2> {
let dq = UnitDualQuaternion::<T1>::from_isometry(self);
dq.to_superset()
}
#[inline]
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fn is_in_subset(dq: &UnitDualQuaternion<T2>) -> bool {
crate::is_convertible::<_, UnitQuaternion<T1>>(&dq.rotation())
&& crate::is_convertible::<_, Translation<T1, 3>>(&dq.translation())
}
#[inline]
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fn from_superset_unchecked(dq: &UnitDualQuaternion<T2>) -> Self {
let dq: UnitDualQuaternion<T1> = crate::convert_ref_unchecked(dq);
dq.to_isometry()
}
}
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impl<T1, T2, R1, R2, const D: usize> SubsetOf<Similarity<T2, R2, D>> for Isometry<T1, R1, D>
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where
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T1: RealField,
T2: RealField + SupersetOf<T1>,
R1: AbstractRotation<T1, D> + SubsetOf<R2>,
R2: AbstractRotation<T2, D>,
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{
#[inline]
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fn to_superset(&self) -> Similarity<T2, R2, D> {
Similarity::from_isometry(self.to_superset(), T2::one())
}
#[inline]
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fn is_in_subset(sim: &Similarity<T2, R2, D>) -> bool {
crate::is_convertible::<_, Isometry<T1, R1, D>>(&sim.isometry) && sim.scaling() == T2::one()
}
#[inline]
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fn from_superset_unchecked(sim: &Similarity<T2, R2, D>) -> Self {
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crate::convert_ref_unchecked(&sim.isometry)
}
}
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impl<T1, T2, R, C, const D: usize> SubsetOf<Transform<T2, C, D>> for Isometry<T1, R, D>
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where
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T1: RealField,
T2: RealField + SupersetOf<T1>,
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C: SuperTCategoryOf<TAffine>,
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R: AbstractRotation<T1, D>
+ SubsetOf<OMatrix<T1, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>>
+ SubsetOf<OMatrix<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>>,
Const<D>: DimNameAdd<U1> + DimMin<Const<D>, Output = Const<D>>, // needed by .is_special_orthogonal()
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DefaultAllocator: Allocator<T1, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>
+ Allocator<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>
+ Allocator<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>,
// + Allocator<T1, D>
// + Allocator<(usize, usize), D>
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// + Allocator<T2, D, D>
// + Allocator<T2, D>
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{
#[inline]
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fn to_superset(&self) -> Transform<T2, C, D> {
Transform::from_matrix_unchecked(self.to_homogeneous().to_superset())
}
#[inline]
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fn is_in_subset(t: &Transform<T2, C, D>) -> bool {
<Self as SubsetOf<_>>::is_in_subset(t.matrix())
}
#[inline]
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fn from_superset_unchecked(t: &Transform<T2, C, D>) -> Self {
Self::from_superset_unchecked(t.matrix())
}
}
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impl<T1, T2, R, const D: usize>
SubsetOf<OMatrix<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>> for Isometry<T1, R, D>
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where
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T1: RealField,
T2: RealField + SupersetOf<T1>,
R: AbstractRotation<T1, D>
+ SubsetOf<OMatrix<T1, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>>
+ SubsetOf<OMatrix<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>>,
Const<D>: DimNameAdd<U1> + DimMin<Const<D>, Output = Const<D>>, // needed by .is_special_orthogonal()
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DefaultAllocator: Allocator<T1, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>
+ Allocator<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>
+ Allocator<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>, // + Allocator<(usize, usize), D>
// + Allocator<T2, D, D>
// + Allocator<T2, D>
// + Allocator<T1, D>
// + Allocator<T1, D, D>
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{
#[inline]
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fn to_superset(&self) -> OMatrix<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>> {
self.to_homogeneous().to_superset()
}
#[inline]
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fn is_in_subset(m: &OMatrix<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>) -> bool {
let rot = m.fixed_slice::<D, D>(0, 0);
let bottom = m.fixed_slice::<1, D>(D, 0);
// Scalar types agree.
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m.iter().all(|e| SupersetOf::<T1>::is_in_subset(e)) &&
// The block part is a rotation.
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rot.is_special_orthogonal(T2::default_epsilon() * crate::convert(100.0)) &&
// The bottom row is (0, 0, ..., 1)
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bottom.iter().all(|e| e.is_zero()) && m[(D, D)] == T2::one()
}
#[inline]
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fn from_superset_unchecked(
m: &OMatrix<T2, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>,
) -> Self {
let t = m.fixed_slice::<D, 1>(0, D).into_owned();
let t = Translation {
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vector: crate::convert_unchecked(t),
};
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Self::from_parts(t, crate::convert_unchecked(m.clone_owned()))
}
}
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impl<T: SimdRealField, R: AbstractRotation<T, D>, const D: usize> From<Translation<T, D>>
for Isometry<T, R, D>
{
#[inline]
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fn from(tra: Translation<T, D>) -> Self {
Self::from_parts(tra, R::identity())
}
}
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impl<T: SimdRealField, R, const D: usize> From<Isometry<T, R, D>>
for OMatrix<T, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>
where
Const<D>: DimNameAdd<U1>,
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R: SubsetOf<OMatrix<T, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>>,
DefaultAllocator: Allocator<T, DimNameSum<Const<D>, U1>, DimNameSum<Const<D>, U1>>, // + Allocator<T, D>,
{
#[inline]
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fn from(iso: Isometry<T, R, D>) -> Self {
iso.to_homogeneous()
}
}
impl<T: SimdRealField, R, const D: usize> From<[T; D]> for Isometry<T, R, D>
where
R: AbstractRotation<T, D>,
{
#[inline]
fn from(coords: [T; D]) -> Self {
Self::from_parts(coords.into(), R::identity())
}
}
impl<T: SimdRealField, R, const D: usize> From<SVector<T, D>> for Isometry<T, R, D>
where
R: AbstractRotation<T, D>,
{
#[inline]
fn from(coords: SVector<T, D>) -> Self {
Self::from_parts(coords.into(), R::identity())
}
}
impl<T: SimdRealField, R, const D: usize> From<Point<T, D>> for Isometry<T, R, D>
where
R: AbstractRotation<T, D>,
{
#[inline]
fn from(coords: Point<T, D>) -> Self {
Self::from_parts(coords.into(), R::identity())
}
}
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impl<T: Scalar + PrimitiveSimdValue, R, const D: usize>
From<[Isometry<T::Element, R::Element, D>; 2]> for Isometry<T, R, D>
where
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T: From<[<T as SimdValue>::Element; 2]>,
R: SimdValue + AbstractRotation<T, D> + From<[<R as SimdValue>::Element; 2]>,
R::Element: AbstractRotation<T::Element, D>,
T::Element: Scalar + Copy,
R::Element: Scalar + Copy,
{
#[inline]
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fn from(arr: [Isometry<T::Element, R::Element, D>; 2]) -> Self {
let tra = Translation::from([arr[0].translation.clone(), arr[1].translation.clone()]);
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let rot = R::from([arr[0].rotation, arr[0].rotation]);
Self::from_parts(tra, rot)
}
}
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impl<T: Scalar + PrimitiveSimdValue, R, const D: usize>
From<[Isometry<T::Element, R::Element, D>; 4]> for Isometry<T, R, D>
where
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T: From<[<T as SimdValue>::Element; 4]>,
R: SimdValue + AbstractRotation<T, D> + From<[<R as SimdValue>::Element; 4]>,
R::Element: AbstractRotation<T::Element, D>,
T::Element: Scalar + Copy,
R::Element: Scalar + Copy,
{
#[inline]
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fn from(arr: [Isometry<T::Element, R::Element, D>; 4]) -> Self {
let tra = Translation::from([
arr[0].translation.clone(),
arr[1].translation.clone(),
arr[2].translation.clone(),
arr[3].translation.clone(),
]);
let rot = R::from([
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arr[0].rotation,
arr[1].rotation,
arr[2].rotation,
arr[3].rotation,
]);
Self::from_parts(tra, rot)
}
}
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impl<T: Scalar + PrimitiveSimdValue, R, const D: usize>
From<[Isometry<T::Element, R::Element, D>; 8]> for Isometry<T, R, D>
where
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T: From<[<T as SimdValue>::Element; 8]>,
R: SimdValue + AbstractRotation<T, D> + From<[<R as SimdValue>::Element; 8]>,
R::Element: AbstractRotation<T::Element, D>,
T::Element: Scalar + Copy,
R::Element: Scalar + Copy,
{
#[inline]
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fn from(arr: [Isometry<T::Element, R::Element, D>; 8]) -> Self {
let tra = Translation::from([
arr[0].translation.clone(),
arr[1].translation.clone(),
arr[2].translation.clone(),
arr[3].translation.clone(),
arr[4].translation.clone(),
arr[5].translation.clone(),
arr[6].translation.clone(),
arr[7].translation.clone(),
]);
let rot = R::from([
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arr[0].rotation,
arr[1].rotation,
arr[2].rotation,
arr[3].rotation,
arr[4].rotation,
arr[5].rotation,
arr[6].rotation,
arr[7].rotation,
]);
Self::from_parts(tra, rot)
}
}
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impl<T: Scalar + PrimitiveSimdValue, R, const D: usize>
From<[Isometry<T::Element, R::Element, D>; 16]> for Isometry<T, R, D>
where
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T: From<[<T as SimdValue>::Element; 16]>,
R: SimdValue + AbstractRotation<T, D> + From<[<R as SimdValue>::Element; 16]>,
R::Element: AbstractRotation<T::Element, D>,
T::Element: Scalar + Copy,
R::Element: Scalar + Copy,
{
#[inline]
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fn from(arr: [Isometry<T::Element, R::Element, D>; 16]) -> Self {
let tra = Translation::from([
arr[0].translation.clone(),
arr[1].translation.clone(),
arr[2].translation.clone(),
arr[3].translation.clone(),
arr[4].translation.clone(),
arr[5].translation.clone(),
arr[6].translation.clone(),
arr[7].translation.clone(),
arr[8].translation.clone(),
arr[9].translation.clone(),
arr[10].translation.clone(),
arr[11].translation.clone(),
arr[12].translation.clone(),
arr[13].translation.clone(),
arr[14].translation.clone(),
arr[15].translation.clone(),
]);
let rot = R::from([
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arr[0].rotation,
arr[1].rotation,
arr[2].rotation,
arr[3].rotation,
arr[4].rotation,
arr[5].rotation,
arr[6].rotation,
arr[7].rotation,
arr[8].rotation,
arr[9].rotation,
arr[10].rotation,
arr[11].rotation,
arr[12].rotation,
arr[13].rotation,
arr[14].rotation,
arr[15].rotation,
]);
Self::from_parts(tra, rot)
}
}