#  File src/library/graphics/R/arrows.R
#  Part of the R package, http://www.R-project.org
#
#  This program is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  A copy of the GNU General Public License is available at
#  http://www.r-project.org/Licenses/

arrows <-
    function(x0, y0, x1 = x0, y1 = y0, length = 0.25, angle = 30, code = 2,
             col = par("fg"), lty = par("lty"), lwd = par("lwd"), ...)
{
    if (missing(x1) && missing(y1))
        stop("one of 'x1' and 'y1' must be given")
    .Internal(arrows(x0, y0, x1, y1, length=length, angle=angle, code=code,
                     col=col, lty=lty, lwd=lwd, ...))
}
