37 lines
1.1 KiB
Rust
37 lines
1.1 KiB
Rust
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use crate::Interpolate;
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use nalgebra as na;
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use num_traits::Float;
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macro_rules! impl_interpolate_na_vector {
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($($t:tt)*) => {
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impl<T, V> Interpolate<T> for $($t)*<V> where T: Float, V: na::Scalar + Interpolate<T> {
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fn lerp(a: Self, b: Self, t: T) -> Self {
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na::Vector::zip_map(&a, &b, |c1, c2| Interpolate::lerp(c1, c2, t))
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}
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}
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}
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}
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impl_interpolate_na_vector!(na::Vector1);
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impl_interpolate_na_vector!(na::Vector2);
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impl_interpolate_na_vector!(na::Vector3);
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impl_interpolate_na_vector!(na::Vector4);
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impl_interpolate_na_vector!(na::Vector5);
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impl_interpolate_na_vector!(na::Vector6);
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impl<T, N, D> Interpolate<T> for na::Point<N, D>
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where D: na::DimName,
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na::DefaultAllocator: na::allocator::Allocator<N, D>,
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<na::DefaultAllocator as na::allocator::Allocator<N, D>>::Buffer: Copy,
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N: na::Scalar + Interpolate<T>,
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T: Float {
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fn lerp(a: Self, b: Self, t: T) -> Self {
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// The 'coords' of a point is just a vector, so we can interpolate component-wise
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// over these vectors.
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let coords = na::Vector::zip_map(&a.coords, &b.coords, |c1, c2| Interpolate::lerp(c1, c2, t));
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na::Point::from(coords)
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}
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}
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