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use na::Real;

use aliases::{TMat3, TMat4, TVec3};

/// Builds a 3x3 matrix `m` such that for any `v`: `m * v == cross(x, v)`.
pub fn matrix_cross3<N: Real>(x: &TVec3<N>) -> TMat3<N> {
    x.cross_matrix()
}

/// Builds a 4x4 matrix `m` such that for any `v`: `m * v == cross(x, v)`.
pub fn matrix_cross<N: Real>(x: &TVec3<N>) -> TMat4<N> {
    ::mat3_to_mat4(&x.cross_matrix())
}