hexga_math 0.0.11-beta.53

Math related crate that define number and casting, and support array programming...
Documentation 
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use super::*;

/// Iter over all idx inside a rectangle
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct RectangleIter<Idx, const N: usize>
where
    Idx: Integer,
{
    offset: Vector<Idx, N>,
    iter: VectorIter<Idx, N>,
}
impl<Idx, const N: usize> RectangleIter<Idx, N>
where
    Idx: Integer,
{
    pub fn new(rect: Rectangle<Idx, N>) -> Self
    {
        Self::from_vec_iter(rect.pos, rect.size.iter_index())
    }
    pub const fn from_vec_iter(offset: Vector<Idx, N>, iter: VectorIter<Idx, N>) -> Self
    {
        Self { offset, iter }
    }
}

impl<Idx, const N: usize> Iterator for RectangleIter<Idx, N>
where
    Idx: Integer,
{
    type Item = <VectorIter<Idx, N> as Iterator>::Item;

    fn next(&mut self) -> Option<Self::Item> { self.iter.next().map(|v| v + self.offset) }

    fn size_hint(&self) -> (usize, Option<usize>) { self.iter.size_hint() }
}

impl<Idx, const N: usize> std::iter::FusedIterator for RectangleIter<Idx, N>
where
    Idx: Integer,
    VectorIter<Idx, N>: std::iter::FusedIterator,
{
}
impl<Idx, const N: usize> std::iter::ExactSizeIterator for RectangleIter<Idx, N>
where
    Idx: Integer,
    VectorIter<Idx, N>: std::iter::ExactSizeIterator,
{
}