Merge pull request #524 from shivshank/master
Add `push` method to Vector
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570611a59b
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@ -832,14 +832,7 @@ impl<N: Scalar + Zero, D: DimAdd<U1>, S: Storage<N, D>> Vector<N, D, S> {
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#[inline]
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pub fn to_homogeneous(&self) -> VectorN<N, DimSum<D, U1>>
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where DefaultAllocator: Allocator<N, DimSum<D, U1>> {
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let len = self.len();
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let hnrows = DimSum::<D, U1>::from_usize(len + 1);
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let mut res = unsafe { VectorN::<N, _>::new_uninitialized_generic(hnrows, U1) };
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res.generic_slice_mut((0, 0), self.data.shape())
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.copy_from(self);
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res[(len, 0)] = N::zero();
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res
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self.push(N::zero())
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}
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/// Constructs a vector from coordinates in projective space, i.e., removes a `0` at the end of
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@ -859,6 +852,22 @@ impl<N: Scalar + Zero, D: DimAdd<U1>, S: Storage<N, D>> Vector<N, D, S> {
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}
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}
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impl<N: Scalar + Zero, D: DimAdd<U1>, S: Storage<N, D>> Vector<N, D, S> {
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/// Constructs a new vector of higher dimension by appending `element` to the end of `self`.
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#[inline]
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pub fn push(&self, element: N) -> VectorN<N, DimSum<D, U1>>
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where DefaultAllocator: Allocator<N, DimSum<D, U1>> {
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let len = self.len();
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let hnrows = DimSum::<D, U1>::from_usize(len + 1);
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let mut res = unsafe { VectorN::<N, _>::new_uninitialized_generic(hnrows, U1) };
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res.generic_slice_mut((0, 0), self.data.shape())
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.copy_from(self);
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res[(len, 0)] = element;
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res
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}
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}
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impl<N, R: Dim, C: Dim, S> AbsDiffEq for Matrix<N, R, C, S>
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where
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N: Scalar + AbsDiffEq,
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@ -287,6 +287,18 @@ fn to_homogeneous() {
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assert_eq!(d.to_homogeneous(), expected_d);
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}
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#[test]
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fn push() {
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let a = Vector3::new(1.0, 2.0, 3.0);
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let expected_a = Vector4::new(1.0, 2.0, 3.0, 4.0);
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let b = DVector::from_row_slice(3, &[1.0, 2.0, 3.0]);
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let expected_b = DVector::from_row_slice(4, &[1.0, 2.0, 3.0, 4.0]);
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assert_eq!(a.push(4.0), expected_a);
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assert_eq!(b.push(4.0), expected_b);
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}
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#[test]
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fn simple_add() {
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let a = Matrix2x3::new(1.0, 2.0, 3.0, 4.0, 5.0, 6.0);
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