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# Copyright (C) 2007, 2008 Andrew Ross
# Copyright (C) 2007-2016 Alan W. Irwin
# Filling and clipping polygons.
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PLplot 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 Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# main
#
# Test program for filling polygons and proper clipping
def main(w):
w.pladv(0)
w.plssub(3,3)
xextreme = [ [ -120.0, 120.0 ],
[ -120.0, 120.0 ],
[ -120.0, 120.0 ],
[ -80.0, 80.0 ],
[ -220.0, -120.0 ],
[ -20.0, 20.0 ],
[ -20.0, 20.0 ],
[ -80.0, 80.0 ],
[ 20.0, 120.0 ] ]
yextreme = [ [ -120.0, 120.0 ],
[ 20.0, 120.0 ],
[ -20.0, 120.0 ],
[ -20.0, 120.0 ],
[ -120.0, 120.0 ],
[ -120.0, 120.0 ],
[ -20.0, 20.0 ],
[ -80.0, 80.0 ],
[ -120.0, 120.0 ] ]
for k in range(2):
for j in range(4):
# Polygon 1: a diamond
if (j == 0):
x0 = [0, -100, 0, 100]
y0 = [-100, 0, 100, 0]
# Polygon 2: a diamond - reverse direction
elif (j == 1):
x0 = [100, 0, -100, 0]
y0 = [0, 100, 0, -100]
# Polygon 3: a square with punctures
elif (j == 2):
x0 = [-100, -100, 80, -100, -100, -80, 0, 80, 100, 100]
y0 = [-100, -80, 0, 80, 100, 100, 80, 100, 100, -100]
# Polygon 4: a square with punctures - reverse direction
elif (j == 3):
x0 = [100, 100, 80, 0, -80, -100, -100, 80, -100, -100]
y0 = [-100, 100, 100, 80, 100, 100, 80, 0, -80, -100]
for i in range(9):
w.pladv(0)
w.plvsta()
w.plwind(xextreme[i][0], xextreme[i][1], yextreme[i][0], yextreme[i][1])
w.plcol0(2)
w.plbox("bc", 1.0, 0, "bcnv", 10.0, 0)
w.plcol0(1)
w.plpsty(0)
if (k == 0):
w.plfill(x0,y0)
else:
w.plgradient(x0, y0, 45.)
w.plcol0(2)
w.pllsty(1)
w.plline(x0,y0)
# Restore defaults
w.plssub(1, 1)
w.pleop()
# Must be done independently because otherwise this changes output files
# and destroys agreement with C examples.
#w.plcol0(1)
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