program main

!*****************************************************************************80
!
!! triangle_svg_test() tests triangle_svg().
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    19 April 2014
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  call timestamp ( )
  write ( *, '(a)' ) ' '
  write ( *, '(a)' ) 'triangle_svg_test():'
  write ( *, '(a)' ) '  Fortran90 version'
  write ( *, '(a)' ) '  Test triangle_svg().'

  call test01 ( )
!
!  Terminate.
!
  write ( *, '(a)' ) ' '
  write ( *, '(a)' ) 'triangle_svg_test():'
  write ( *, '(a)' ) '  Normal end of execution.'
  write ( *, '(a)' ) ' '
  call timestamp ( )

  stop 0
end
subroutine test01 ( )

!*****************************************************************************80
!
!! TEST01 calls TRIANGLE_SVG to plot a triangle and some points.
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    19 April 2014
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  integer, parameter :: p_num = 13

  real ( kind = rk ) a
  real ( kind = rk ) b
  real ( kind = rk ) c
  real ( kind = rk ) d
  real ( kind = rk ) e
  real ( kind = rk ) f
  real ( kind = rk ) g
  real ( kind = rk ) h
  real ( kind = rk ) p(2,p_num)
  character ( len = 255 ) plot_filename
  real ( kind = rk ) t(2,3)

  h = 1.0D+00 / 3.0D+00
  a = 0.479308067841923D+00
  b = 0.260345966079038D+00
  c = 0.869739794195568D+00
  d = 0.065130102902216D+00
  e = 0.638444188569809D+00
  f = 0.312865496004875D+00
  g = 0.048690315425316D+00

  p(1,1:13) =   (/ h, a, b, b, c, d, d, e, e, f, f, g, g /)
  p(2,1:13) =   (/ h, b, a, b, d, c, d, f, g, e, g, e, f /)

  t = reshape ( (/ &
    0.0, 0.0, &
    1.0, 0.0, &
    0.0, 1.0 /), (/ 2, 3 /) )

  plot_filename = 'test01.svg'

  call triangle_svg ( plot_filename, t, p_num, p )

  return
end
subroutine timestamp ( )

!*****************************************************************************80
!
!! timestamp() prints the current YMDHMS date as a time stamp.
!
!  Example:
!
!    31 May 2001   9:45:54.872 AM
!
!  Licensing:
!
!    This code is distributed under the MIT license.
!
!  Modified:
!
!    18 May 2013
!
!  Author:
!
!    John Burkardt
!
  implicit none

  integer, parameter :: rk = kind ( 1.0D+00 )

  character ( len = 8 ) ampm
  integer d
  integer h
  integer m
  integer mm
  character ( len = 9 ), parameter, dimension(12) :: month = (/ &
    'January  ', 'February ', 'March    ', 'April    ', &
    'May      ', 'June     ', 'July     ', 'August   ', &
    'September', 'October  ', 'November ', 'December ' /)
  integer n
  integer s
  integer values(8)
  integer y

  call date_and_time ( values = values )

  y = values(1)
  m = values(2)
  d = values(3)
  h = values(5)
  n = values(6)
  s = values(7)
  mm = values(8)

  if ( h < 12 ) then
    ampm = 'AM'
  else if ( h == 12 ) then
    if ( n == 0 .and. s == 0 ) then
      ampm = 'Noon'
    else
      ampm = 'PM'
    end if
  else
    h = h - 12
    if ( h < 12 ) then
      ampm = 'PM'
    else if ( h == 12 ) then
      if ( n == 0 .and. s == 0 ) then
        ampm = 'Midnight'
      else
        ampm = 'AM'
      end if
    end if
  end if

  write ( *, '(i2.2,1x,a,1x,i4,2x,i2,a1,i2.2,a1,i2.2,a1,i3.3,1x,a)' ) &
    d, trim ( month(m) ), y, h, ':', n, ':', s, '.', mm, trim ( ampm )

  return
end