netpbm 2:10.0-15ubuntu2 / usr / bin / ppmfade

This file is indexed.

/usr/bin/ppmfade is in netpbm 2:10.0-15ubuntu2.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below. 

  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
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
#!/usr/bin/perl -w
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#
#  This program creates a fade (a sequence of frames) between two images.
#
#  Author:     Wesley C. Barris
#              AHPCRC
#              Minnesota Supercomputer Center, Inc.
#  Date:       January 7, 1994
#
#  Converted to perl and renamed from pbmfade to ppmfade by Bryan Henderson
#  on March 31, 2000 for inclusion in Netpbm.  Also, superfluous ability to 
#  process other formats removed.
#
#  Copyright @ 1994, Minnesota Supercomputer Center, Inc.
#
#  RESTRICTED RIGHTS LEGEND
#
#  Use, duplication, or disclosure of this software and its documentation
#  by the Government is subject to restrictions as set forth in subdivision
#  { (b) (3) (ii) } of the Rights in Technical Data and Computer Software
#  clause at 52.227-7013.
#
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
use strict;
use File::Temp "tempdir";


my $SPREAD =  1;
my $SHIFT =   2;
my $RELIEF =  3;
my $OIL =     4;
my $EDGE =    5;
my $BENTLEY = 6;
my $BLOCK =   7;
my $MIX =     8;
#
#  Set some defaults.
#
my $nframes = 30;			# total number of files created (1 sec)
my $first_file = "undefined";
my $last_file = "undefined";
my $base_name = "fade";		# default base name of output files
my $image = "ppm";		# default output storage format
my $mode = $SPREAD;		# default fading mode
#
#  Check those command line args.
#
if (@ARGV == 0) {
    usage();
}

my $n;  # argument number

for ($n = 0; $n < @ARGV; $n++) {
    if ("$ARGV[$n]" eq "-f") {
        $n++;
        $first_file = $ARGV[$n];
        if (-e $first_file) {
        } else {
            print "I can't find $first_file\n";
            exit 20;
        }
    } elsif ($ARGV[$n] eq "-l") {
        $n++;
        $last_file = $ARGV[$n];
        if (-e $last_file) {
        } else {
            print "I can't find $last_file\n";
            exit 20;
        }
    } elsif ($ARGV[$n] eq "-base") {
        $n++;
        $base_name = $ARGV[$n];
    } elsif ($ARGV[$n] eq "-spread") {
        $mode = $SPREAD;
    } elsif ($ARGV[$n] eq "-shift") {
        $mode = $SHIFT;
    } elsif ($ARGV[$n] eq "-relief") {
        $mode = $RELIEF;
    } elsif ($ARGV[$n] eq "-oil") {
        $mode = $OIL;
    } elsif ("$ARGV[$n]" eq "-edge") {
        $mode = $EDGE;
    } elsif ("$ARGV[$n]" eq "-bentley") {
        $mode = $BENTLEY;
    } elsif ("$ARGV[$n]" eq "-block") {
        $mode = $BLOCK;
    } elsif ("$ARGV[$n]" eq "-mix") {
        $mode = $MIX;
    } elsif ($ARGV[$n] eq "-help" || $ARGV[$n] eq "-h") {
        usage();
    } else {
        print "Unknown argument: $ARGV[$n]\n";
        exit 100;
    } 
}
#
#  Define a couple linear ramps.
#
# We don't use element 0 of these arrays.
my @spline10 = (0, 0, 0.11, 0.22, 0.33, 0.44, 0.55, 0.66, 0.77, 0.88, 1.0);
my @spline20 = (0, 0, 0.05, 0.11, 0.16, 0.21, 0.26, 0.32, 0.37, 0.42, 0.47, 
                0.53, 0.58, 0.63, 0.69, 0.74, 0.79, 0.84, 0.89, 0.95, 1.0);
#
#  Just what are we supposed to do?
#
my ($height, $width);    # width and height of our frames
if ($first_file ne "undefined") {
    if ((`pnmfile $first_file` =~ m{\b(\d+)\sby\s(\d+)} )) { 
        $width = $1; $height = $2;
    } else {
        print("Unrecognized results from pnmfile on $first_file.\n");
        exit(50);
    }
} elsif ($last_file ne "undefined") {
    if ((`pnmfile $last_file` =~ m{\b(\d+)\sby\s(\d+)} )) { 
        $width = $1; $height = $2;
    } else {
        print("Unrecognized results from pnmfile on $first_file.\n");
        exit(50);
    }
} else {
    print("ppmfade:  You must specify -f or -l (or both)\n");
    exit(90);
}

print("Frames are " . $width . "W x " . $height . "H\n");

#
# We create a tmp-directory right here
#
my $tempdir = tempdir("ppmfade.XXXXXXX", CLEANUP => 1);

if ($first_file eq "undefined") {
    print "Fading from black to ";
    system("ppmmake \\#000 $width $height >$tempdir/junk1.ppm");
} else {
    print "Fading from $first_file to ";
    system("cp", $first_file, "$tempdir/junk1.ppm");
}

if ($last_file eq "undefined") {
    print "black.\n";
    system("ppmmake \\#000 $width $height >$tempdir/junk2.ppm");
} else {
    print "$last_file\n";
    system("cp", $last_file, "$tempdir/junk2.ppm");
}

#
#  Perform the fade.
#

# Here's what our temporary files are:
#   junk1.ppm: The original (fade-from) image
#   junk2.ppm: The target (fade-from) image
#   junk3.ppm: The frame of the fade for the current iteration of the 
#                the for loop.
#   junk1a.ppm: If the fade involves a ppmmix sequence from one intermediate
#                 image to another, this is the first frame of that 
#                 sequence.
#   junk2a.ppm: This is the last frame of the above-mentioned ppmmix sequence

my $i;    # Frame number
for ($i = 1; $i <= $nframes; $i++) {
    print("Creating $i of $nframes...\n");
    if ($mode eq $SPREAD) {
        if ($i <= 10) {
            my $n = $spline20[$i] * 100;
            system("ppmspread $n $tempdir/junk1.ppm >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n;
            $n = $spline20[$i] * 100;
            system("ppmspread $n $tempdir/junk1.ppm >$tempdir/junk1a.ppm");
            $n = (1-$spline20[$i-10]) * 100;
            system("ppmspread $n $tempdir/junk2.ppm >$tempdir/junk2a.ppm");
            $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1a.ppm $tempdir/junk2a.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = (1-$spline20[$i-10])*100;
            system("ppmspread $n $tempdir/junk2.ppm >$tempdir/junk3.ppm");
        }
    } elsif ($mode eq $SHIFT) {
        if ($i <= 10) {
            my $n = $spline20[$i] * 100;
            system("ppmshift $n $tempdir/junk1.ppm >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n;
            $n = $spline20[$i] * 100;
            system("ppmshift $n $tempdir/junk1.ppm >$tempdir/junk1a.ppm");
            $n = (1-$spline20[$i-10])*100;
            system("ppmshift $n $tempdir/junk2.ppm >$tempdir/junk2a.ppm");
            $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1a.ppm $tempdir/junk2a.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = (1-$spline20[$i-10]) * 100;
            system("ppmshift $n $tempdir/junk2.ppm >$tempdir/junk3.ppm");
        }
    } elsif ($mode eq $RELIEF) {
        if ($i == 1) {
            system("ppmrelief $tempdir/junk1.ppm >$tempdir/junk1r.ppm");
        }
        if ($i <= 10) {
            my $n = $spline10[$i];
            system("ppmmix $n $tempdir/junk1.ppm $tempdir/junk1r.ppm >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1r.ppm $tempdir/junk2r.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = $spline10[$i-20];
            system("ppmmix $n $tempdir/junk2r.ppm $tempdir/junk2.ppm >$tempdir/junk3.ppm");
        }
        if ($i == 10) {
            system("ppmrelief $tempdir/junk2.ppm >$tempdir/junk2r.ppm");
        }
    } elsif ($mode eq $OIL) {
        if ($i == 1) {
            system("ppmtopgm $tempdir/junk1.ppm | pgmoil >$tempdir/junko.ppm");
            system("rgb3toppm $tempdir/junko.ppm $tempdir/junko.ppm $tempdir/junko.ppm " .
                   ">$tempdir/junk1o.ppm");
        }
        if ($i <= 10) {
            my $n = $spline10[$i];
            system("ppmmix $n $tempdir/junk1.ppm $tempdir/junk1o.ppm >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1o.ppm $tempdir/junk2o.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = $spline10[$i-20];
            system("ppmmix $n $tempdir/junk2o.ppm $tempdir/junk2.ppm >$tempdir/junk3.ppm");
        }
        if ($i == 10) {
            system("ppmtopgm $tempdir/junk2.ppm | pgmoil >$tempdir/junko.ppm");
            system("rgb3toppm $tempdir/junko.ppm $tempdir/junko.ppm $tempdir/junko.ppm " .
                   ">$tempdir/junk2o.ppm");
        }
    } elsif ($mode eq $EDGE) {
        if ($i == 1) {
            system("ppmtopgm $tempdir/junk1.ppm | pgmedge >$tempdir/junko.ppm");
            system("rgb3toppm $tempdir/junko.ppm $tempdir/junko.ppm $tempdir/junko.ppm " .
                   ">$tempdir/junk1o.ppm");
        }
        if ($i <= 10) {
            my $n = $spline10[$i];
            system("ppmmix $n $tempdir/junk1.ppm $tempdir/junk1o.ppm >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1o.ppm $tempdir/junk2o.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = $spline10[$i-20];
            system("ppmmix $n $tempdir/junk2o.ppm $tempdir/junk2.ppm >$tempdir/junk3.ppm");
        }
        if ($i == 10) {
            system("ppmtopgm $tempdir/junk2.ppm | pgmedge >$tempdir/junko.ppm");
            system("rgb3toppm $tempdir/junko.ppm $tempdir/junko.ppm $tempdir/junko.ppm " .
                   ">$tempdir/junk2o.ppm");
        } 
    } elsif ($mode eq $BENTLEY) {
        if ($i == 1) {
            system("ppmtopgm $tempdir/junk1.ppm | pgmbentley >$tempdir/junko.ppm");
            system("rgb3toppm $tempdir/junko.ppm $tempdir/junko.ppm $tempdir/junko.ppm " .
                   ">$tempdir/junk1o.ppm");
        }
        if ($i <= 10) {
            my $n = $spline10[$i];
            system("ppmmix $n $tempdir/junk1.ppm $tempdir/junk1o.ppm >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1o.ppm $tempdir/junk2o.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = $spline10[$i-20];
            system("ppmmix $n $tempdir/junk2o.ppm $tempdir/junk2.ppm >$tempdir/junk3.ppm");
        }
        if ($i == 10) {
            system("ppmtopgm $tempdir/junk2.ppm | pgmbentley >$tempdir/junko.ppm");
            system("rgb3toppm $tempdir/junko.ppm $tempdir/junko.ppm $tempdir/junko.ppm " .
                   ">$tempdir/junk2o.ppm");
        }
    } elsif ($mode eq $BLOCK) {
        if ($i <= 10) {
            my $n = 1 - 1.9*$spline20[$i];
            system("pnmscale $n $tempdir/junk1.ppm | " .
                   "pnmscale -width $width -height $height >$tempdir/junk3.ppm");
        } elsif ($i <= 20) {
            my $n = $spline10[$i-10];
            system("ppmmix $n $tempdir/junk1a.ppm $tempdir/junk2a.ppm >$tempdir/junk3.ppm");
        } else {
            my $n = 1 - 1.9*$spline20[31-$i];
            system("pnmscale $n $tempdir/junk2.ppm | " .
                   "pnmscale -width $width -height $height >$tempdir/junk3.ppm");
        }
        if ($i == 10) {
            system("cp", "$tempdir/junk3.ppm", "$tempdir/junk1a.ppm");
            system("pnmscale $n $tempdir/junk2.ppm | " .
                   "pnmscale -width $width -height $height >$tempdir/junk2a.ppm");
        }    
    } elsif ($mode eq $MIX) {
        my $fade_factor = sqrt(1/($nframes-$i+1));
        system("ppmmix $fade_factor $tempdir/junk1.ppm $tempdir/junk2.ppm >$tempdir/junk3.ppm");
    } else {
        print("Internal error: impossible mode value '$mode'\n");
    }

    my $outfile = sprintf("%s.%04d.ppm", $base_name, $i);
    system("cp", "$tempdir/junk3.ppm", $outfile);
}


# The temporary files are automatically deleted

exit(0);



sub usage() {
   print "Usage: ppmfade [-f first_file] [-l last_file]\n";
   print "               [-spread|-relief|-oil|-edge|-bentley|-block]\n";
   print "               [-base basename]\n";
   print "Notes: Default base: fade\n";
   print "       The resulting image files will be named fade.NNNN.ppm.\n";
   exit(100);
}

APT Browse - Built by Thomas Orozco.