module noisepictures
    use  pixrgb
    implicit none

    contains               ! a lot of garbage ?

!-----------------------------------------------------------------------
subroutine noise_gray8_pic(pict, nbre)
  implicit none
  integer, dimension(:,:), intent(inout) :: pict
  integer, intent(in)                    :: nbre
  integer :: quux, ix, iy, width, height

  width = ubound(pict, 1)  ;  height = ubound(pict, 2)

  do quux=1, nbre
    ix = 1 + mod ( irand(), width )
    iy = 1 + mod ( irand(), height )
    pict(ix, iy) = mod ( irand(), 256 )
  enddo

end subroutine
!-----------------------------------------------------------------------
subroutine noise_gray16_pic(pict, nbre)
  implicit none
  integer, dimension(:,:), intent(inout) :: pict
  integer, intent(in)                    :: nbre
  integer :: quux, ix, iy, width, height

  width = ubound(pict, 1)  ;  height = ubound(pict, 2)

  do quux=1, nbre
    ix = 1 + mod ( irand(), width )
    iy = 1 + mod ( irand(), height )
    pict(ix, iy) = mod ( irand(), 65536 )
  enddo

end subroutine
!-----------------------------------------------------------------------
subroutine noise_rgb8_pic(prgb, nbre)
  implicit none
  type(t_pixrgb), dimension(:,:), intent(inout) :: prgb
  integer, intent(in)                           :: nbre
  integer :: quux, ix, iy, width, height

  print *, 'noise_rgb_pic', nbre

  width = ubound(prgb, 1)  ;  height = ubound(prgb, 2)

  do quux=1, nbre
    ix = 1 + mod ( irand(), width )
    iy = 1 + mod ( irand(), height )
    prgb(ix, iy)%r = mod ( irand(), 256 )
    prgb(ix, iy)%g = mod ( irand(), 256 )
    prgb(ix, iy)%b = mod ( irand(), 256 )
  enddo

end subroutine
!-----------------------------------------------------------------------
subroutine noise_rgb16_pic(prgb, nbre)
  implicit none
  type(t_pixrgb), dimension(:,:), intent(inout) :: prgb
  integer, intent(in)                           :: nbre
  integer :: quux, ix, iy, width, height

  print *, 'noise_rgb_pic', nbre

  width = ubound(prgb, 1)  ;  height = ubound(prgb, 2)

  do quux=1, nbre
    ix = 1 + mod ( irand(), width )
    iy = 1 + mod ( irand(), height )
    prgb(ix, iy)%r = mod ( irand(), 65536 )
    prgb(ix, iy)%g = mod ( irand(), 65536 )
    prgb(ix, iy)%b = mod ( irand(), 65536 )
  enddo

end subroutine
!-----------------------------------------------------------------------
end module noisepictures