/usr/share/doc/libplplot12/examples/tcl/x25.tcl is in plplot-tcl-dev 5.10.0+dfsg2-0.1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 | # $Id: x25.tcl 11680 2011-03-27 17:57:51Z airwin $
#
# Filling and clipping polygons.
#
# Copyright (C) 2005 Arjen Markus
# Copyright (C) 2008 Andrew Ross
#
#
# 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
#--------------------------------------------------------------------------
proc x25 {{w loopback}} {
set npts 0
$w cmd pladv 0
$w cmd plssub 3 3
matrix xextreme f 10 2
matrix yextreme f 10 2
matrix x0 f 10
matrix y0 f 10
xextreme 0 0 = -120.0
xextreme 0 1 = 120.0
yextreme 0 0 = -120.0
yextreme 0 1 = 120.0
xextreme 1 0 = -120.0
xextreme 1 1 = 120.0
yextreme 1 0 = 20.0
yextreme 1 1 = 120.0
xextreme 2 0 = -120.0
xextreme 2 1 = 120.0
yextreme 2 0 = -20.0
yextreme 2 1 = 120.0
xextreme 3 0 = -80.0
xextreme 3 1 = 80.0
yextreme 3 0 = -20.0
yextreme 3 1 = 120.0
xextreme 4 0 = -220.0
xextreme 4 1 = -120.0
yextreme 4 0 = -120.0
yextreme 4 1 = 120.0
xextreme 5 0 = -20.0
xextreme 5 1 = 20.0
yextreme 5 0 = -120.0
yextreme 5 1 = 120.0
xextreme 6 0 = -20.0
xextreme 6 1 = 20.0
yextreme 6 0 = -20.0
yextreme 6 1 = 20.0
xextreme 7 0 = -80.0
xextreme 7 1 = 80.0
yextreme 7 0 = -80.0
yextreme 7 1 = 80.0
xextreme 8 0 = 20.0
xextreme 8 1 = 120.0
yextreme 8 0 = -120.0
yextreme 8 1 = 120.0
for {set k 0} {$k < 2} {incr k} {
for {set j 0} {$j < 4} {incr j} {
if { $j == 0 } {
# Polygon 1: a diamond
x0 0 = 0
y0 0 = -100
x0 1 = -100
y0 1 = 0
x0 2 = 0
y0 2 = 100
x0 3 = 100
y0 3 = 0
set npts 4
}
if { $j == 1 } {
# Polygon 1: a diamond - reverse direction
x0 3 = 0
y0 3 = -100
x0 2 = -100
y0 2 = 0
x0 1 = 0
y0 1 = 100
x0 0 = 100
y0 0 = 0
set npts 4
}
if { $j == 2 } {
# Polygon 2: a square with punctures
x0 0 = -100
y0 0 = -100
x0 1 = -100
y0 1 = -80
x0 2 = 80
y0 2 = 0
x0 3 = -100
y0 3 = 80
x0 4 = -100
y0 4 = 100
x0 5 = -80
y0 5 = 100
x0 6 = 0
y0 6 = 80
x0 7 = 80
y0 7 = 100
x0 8 = 100
y0 8 = 100
x0 9 = 100
y0 9 = -100
set npts 10
}
if { $j == 3 } {
# Polygon 2: a square with punctures - reversed direction
x0 9 = -100
y0 9 = -100
x0 8 = -100
y0 8 = -80
x0 7 = 80
y0 7 = 0
x0 6 = -100
y0 6 = 80
x0 5 = -100
y0 5 = 100
x0 4 = -80
y0 4 = 100
x0 3 = 0
y0 3 = 80
x0 2 = 80
y0 2 = 100
x0 1 = 100
y0 1 = 100
x0 0 = 100
y0 0 = -100
set npts 10
}
for {set i 0} {$i < 9} {incr i} {
$w cmd pladv 0
$w cmd plvsta
$w cmd plwind [xextreme $i 0] [xextreme $i 1] [yextreme $i 0] [yextreme $i 1]
$w cmd plcol0 2
$w cmd plbox "bc" 1.0 0 "bcnv" 10.0 0
$w cmd plcol0 1
$w cmd plpsty 0
if { $k == 0 } {
$w cmd plfill $npts x0 y0
} else {
$w cmd plgradient $npts x0 y0 45.0
}
$w cmd plcol0 2
$w cmd pllsty 1
$w cmd plline $npts x0 y0
}
}
}
# Restore defaults
$w cmd plssub 1 1
$w cmd pleop
}
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