PerlinNoise() requires square matrices? about neutrallandscapes.jl HOT 7 CLOSED

function _landscape!(mat, alg::Union{DiamondSquare, MidpointDisplacement}; kw...) where {IT <: Integer}
    rightSize::Bool = _isPowerOfTwo(size(mat)[1]-1) && _isPowerOfTwo(size(mat)[2]-1)

    dsMat = mat
    if !rightSize
        dim1, dim2 = size(mat)
        smallestContainingLattice::Int = 2^ceil(log2(max(dim1, dim2))) + 1
        @warn "$alg cannot be run on the input dimensions ($dim1 x $dim2),
                and will instead run on the next smallest valid size ($smallestContainingLattice x $smallestContainingLattice).
                This can slow performance as it involves additional memory allocation."
        dsMat = zeros(smallestContainingLattice, smallestContainingLattice)
    end
    _diamondsquare!(dsMat, alg)

    mat .= dsMat[1:size(mat)[1], 1:size(mat)[2]]
end

function _landscape!(mat, alg)
  matPointer = mat
  if !rightSize(mat, alg) 
     # allocation correct size matrix to matPointer
  end 
  mat[:] .= matPointer[1:size(mat)[1], 1:size(mat)[2]] 
end