lints: Remove unnecessary qualifications. (#203)

* lints: Remove unnecessary qualifications.

* Remove unused code in wops.rs

This code is now triggering Rust compiler warnings and breaking
CI.

* partitioning: Mark code as only for parallel + std

This code triggers warnings (and errors in CI) because it isn't
used when the `parallel` feature isn't enabled, so correctly mark
it as needing `all(feature = "parallel", feature = "std")`

* Remove unused import of `na::SimdPartialOrd`

src/partitioning/visitor.rs

@@ -1,9 +1,7 @@
 use crate::math::{Real, SimdBool, SimdReal, SIMD_WIDTH};
 
-#[cfg(feature = "std")]
-use crate::partitioning::qbvh::QbvhNode;
-#[cfg(feature = "std")]
-use crate::partitioning::SimdNodeIndex;
+#[cfg(all(feature = "std", feature = "parallel"))]
+use crate::partitioning::{qbvh::QbvhNode, SimdNodeIndex};
 
 /// The next action to be taken by a BVH traversal algorithm after having visited a node with some data.
 pub enum SimdBestFirstVisitStatus<Res> {
@@ -119,7 +117,7 @@ pub trait SimdSimultaneousVisitor<T1, T2, SimdBV> {
  */
 
 /// Trait implemented by visitor called during the parallel traversal of a spatial partitioning data structure.
-#[cfg(feature = "std")]
+#[cfg(all(feature = "std", feature = "parallel"))]
 pub trait ParallelSimdVisitor<LeafData>: Sync {
     /// Execute an operation on the content of a node of the spatial partitioning structure.
     ///
@@ -133,7 +131,7 @@ pub trait ParallelSimdVisitor<LeafData>: Sync {
     ) -> SimdVisitStatus;
 }
 
-#[cfg(feature = "std")]
+#[cfg(all(feature = "std", feature = "parallel"))]
 impl<F, LeafData> ParallelSimdVisitor<LeafData> for F
 where
     F: Sync + Fn(&QbvhNode, Option<[Option<&LeafData>; SIMD_WIDTH]>) -> SimdVisitStatus,
@@ -150,8 +148,7 @@ where
 
 /// Trait implemented by visitor called during a parallel simultaneous spatial partitioning
 /// data structure traversal.
-#[cfg(feature = "parallel")]
-#[cfg(feature = "std")]
+#[cfg(all(feature = "std", feature = "parallel"))]
 pub trait ParallelSimdSimultaneousVisitor<LeafData1, LeafData2>: Sync {
     /// Visitor state data that will be passed down the recursion.
     type Data: Copy + Sync + Default;

src/shape/trimesh.rs

@@ -37,8 +37,8 @@ pub enum TopologyError {
     },
 }
 
-impl std::fmt::Display for TopologyError {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+impl fmt::Display for TopologyError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
             Self::BadTriangle(fid) => {
                 f.pad(&format!("the triangle {fid} has at least two identical vertices."))

src/transformation/convex_hull3/initial_mesh.rs

@@ -46,7 +46,7 @@ pub fn try_get_initial_mesh(
 
     #[cfg(not(feature = "improved_fixed_point_support"))]
     {
-        let cov_mat = crate::utils::cov(normalized_points);
+        let cov_mat = utils::cov(normalized_points);
         let eig = cov_mat.symmetric_eigen();
         eigvec = eig.eigenvectors;
         eigval = eig.eigenvalues;
@@ -140,7 +140,7 @@ pub fn try_get_initial_mesh(
         3 => {
             // The hull is a polyhedron.
             // Find a initial triangle lying on the principal halfspace…
-            let center = crate::utils::center(normalized_points);
+            let center = utils::center(normalized_points);
 
             for point in normalized_points.iter_mut() {
                 *point = Point3::from((*point - center) / eigval.amax());

src/utils/wops.rs

@@ -2,12 +2,9 @@
 
 use crate::math::Real;
 use crate::simd::{SimdBool, SimdReal};
-use na::{Matrix3, Point2, Point3, Scalar, SimdRealField, Vector2, Vector3};
+use na::{Scalar, SimdRealField, Vector2, Vector3};
 use simba::simd::SimdValue;
 
-#[cfg(feature = "simd-is-enabled")]
-use na::SimdPartialOrd;
-
 /// Conditionally swaps each lanes of `a` with those of `b`.
 ///
 /// For each `i in [0..SIMD_WIDTH[`, if `do_swap.extract(i)` is `true` then
@@ -72,36 +69,6 @@ impl WSign<SimdReal> for SimdReal {
     }
 }
 
-pub(crate) trait WComponent: Sized {
-    type Element;
-
-    fn min_component(self) -> Self::Element;
-    fn max_component(self) -> Self::Element;
-}
-
-impl WComponent for Real {
-    type Element = Real;
-
-    fn min_component(self) -> Self::Element {
-        self
-    }
-    fn max_component(self) -> Self::Element {
-        self
-    }
-}
-
-#[cfg(feature = "simd-is-enabled")]
-impl WComponent for SimdReal {
-    type Element = Real;
-
-    fn min_component(self) -> Self::Element {
-        self.simd_horizontal_min()
-    }
-    fn max_component(self) -> Self::Element {
-        self.simd_horizontal_max()
-    }
-}
-
 /// Trait to compute the orthonormal basis of a vector.
 pub trait WBasis: Sized {
     /// The type of the array of orthonormal vectors.
@@ -137,118 +104,6 @@ impl<N: SimdRealField + Copy + WSign<N>> WBasis for Vector3<N> {
     }
 }
 
-pub(crate) trait WVec: Sized {
-    type Element;
-
-    fn horizontal_inf(&self) -> Self::Element;
-    fn horizontal_sup(&self) -> Self::Element;
-}
-
-impl<N: Scalar + Copy + WComponent> WVec for Vector2<N>
-where
-    N::Element: Scalar,
-{
-    type Element = Vector2<N::Element>;
-
-    fn horizontal_inf(&self) -> Self::Element {
-        Vector2::new(self.x.min_component(), self.y.min_component())
-    }
-
-    fn horizontal_sup(&self) -> Self::Element {
-        Vector2::new(self.x.max_component(), self.y.max_component())
-    }
-}
-
-impl<N: Scalar + Copy + WComponent> WVec for Point2<N>
-where
-    N::Element: Scalar,
-{
-    type Element = Point2<N::Element>;
-
-    fn horizontal_inf(&self) -> Self::Element {
-        Point2::new(self.x.min_component(), self.y.min_component())
-    }
-
-    fn horizontal_sup(&self) -> Self::Element {
-        Point2::new(self.x.max_component(), self.y.max_component())
-    }
-}
-
-impl<N: Scalar + Copy + WComponent> WVec for Vector3<N>
-where
-    N::Element: Scalar,
-{
-    type Element = Vector3<N::Element>;
-
-    fn horizontal_inf(&self) -> Self::Element {
-        Vector3::new(
-            self.x.min_component(),
-            self.y.min_component(),
-            self.z.min_component(),
-        )
-    }
-
-    fn horizontal_sup(&self) -> Self::Element {
-        Vector3::new(
-            self.x.max_component(),
-            self.y.max_component(),
-            self.z.max_component(),
-        )
-    }
-}
-
-impl<N: Scalar + Copy + WComponent> WVec for Point3<N>
-where
-    N::Element: Scalar,
-{
-    type Element = Point3<N::Element>;
-
-    fn horizontal_inf(&self) -> Self::Element {
-        Point3::new(
-            self.x.min_component(),
-            self.y.min_component(),
-            self.z.min_component(),
-        )
-    }
-
-    fn horizontal_sup(&self) -> Self::Element {
-        Point3::new(
-            self.x.max_component(),
-            self.y.max_component(),
-            self.z.max_component(),
-        )
-    }
-}
-
-pub(crate) trait WCrossMatrix: Sized {
-    type CrossMat;
-
-    fn gcross_matrix(self) -> Self::CrossMat;
-}
-
-impl WCrossMatrix for Vector3<Real> {
-    type CrossMat = Matrix3<Real>;
-
-    #[inline]
-    #[rustfmt::skip]
-    fn gcross_matrix(self) -> Self::CrossMat {
-        Matrix3::new(
-            0.0, -self.z, self.y,
-            self.z, 0.0, -self.x,
-            -self.y, self.x, 0.0,
-        )
-    }
-}
-
-impl WCrossMatrix for Vector2<Real> {
-    type CrossMat = Vector2<Real>;
-
-    #[inline]
-    fn gcross_matrix(self) -> Self::CrossMat {
-        Vector2::new(-self.y, self.x)
-    }
-}
-
 pub(crate) trait WCross<Rhs>: Sized {
     type Result;
     fn gcross(&self, rhs: Rhs) -> Self::Result;
@@ -278,60 +133,6 @@ impl WCross<Vector2<Real>> for Real {
     }
 }
 
-pub(crate) trait WDot<Rhs>: Sized {
-    type Result;
-    fn gdot(&self, rhs: Rhs) -> Self::Result;
-}
-
-impl WDot<Vector3<Real>> for Vector3<Real> {
-    type Result = Real;
-
-    fn gdot(&self, rhs: Vector3<Real>) -> Self::Result {
-        self.x * rhs.x + self.y * rhs.y + self.z * rhs.z
-    }
-}
-
-impl WDot<Vector2<Real>> for Vector2<Real> {
-    type Result = Real;
-
-    fn gdot(&self, rhs: Vector2<Real>) -> Self::Result {
-        self.x * rhs.x + self.y * rhs.y
-    }
-}
-
-impl WDot<Real> for Real {
-    type Result = Real;
-
-    fn gdot(&self, rhs: Real) -> Self::Result {
-        *self * rhs
-    }
-}
-
-#[cfg(feature = "simd-is-enabled")]
-impl WCrossMatrix for Vector3<SimdReal> {
-    type CrossMat = Matrix3<SimdReal>;
-
-    #[inline]
-    #[rustfmt::skip]
-    fn gcross_matrix(self) -> Self::CrossMat {
-        Matrix3::new(
-            num::zero(), -self.z, self.y,
-            self.z, num::zero(), -self.x,
-            -self.y, self.x, num::zero(),
-        )
-    }
-}
-
-#[cfg(feature = "simd-is-enabled")]
-impl WCrossMatrix for Vector2<SimdReal> {
-    type CrossMat = Vector2<SimdReal>;
-
-    #[inline]
-    fn gcross_matrix(self) -> Self::CrossMat {
-        Vector2::new(-self.y, self.x)
-    }
-}
-
 #[cfg(feature = "simd-is-enabled")]
 impl WCross<Vector3<SimdReal>> for Vector3<SimdReal> {
     type Result = Vector3<SimdReal>;
@@ -360,30 +161,3 @@ impl WCross<Vector2<SimdReal>> for Vector2<SimdReal> {
         prod.x - prod.y
     }
 }
-
-#[cfg(feature = "simd-is-enabled")]
-impl WDot<Vector3<SimdReal>> for Vector3<SimdReal> {
-    type Result = SimdReal;
-
-    fn gdot(&self, rhs: Vector3<SimdReal>) -> Self::Result {
-        self.x * rhs.x + self.y * rhs.y + self.z * rhs.z
-    }
-}
-
-#[cfg(feature = "simd-is-enabled")]
-impl WDot<Vector2<SimdReal>> for Vector2<SimdReal> {
-    type Result = SimdReal;
-
-    fn gdot(&self, rhs: Vector2<SimdReal>) -> Self::Result {
-        self.x * rhs.x + self.y * rhs.y
-    }
-}
-
-#[cfg(feature = "simd-is-enabled")]
-impl WDot<SimdReal> for SimdReal {
-    type Result = SimdReal;
-
-    fn gdot(&self, rhs: SimdReal) -> Self::Result {
-        *self * rhs
-    }
-}