diff options
Diffstat (limited to 'editor/ppmfade')
| -rwxr-xr-x | editor/ppmfade | 631 |
1 files changed, 386 insertions, 245 deletions
diff --git a/editor/ppmfade b/editor/ppmfade index dcd7bf26..4e2c8367 100755 --- a/editor/ppmfade +++ b/editor/ppmfade @@ -35,12 +35,22 @@ exec perl -w -x -S -- "$0" "$@" # # Inspired by the program Pbmfade by Wesley C. Barris of AHPCRC, # Minnesota Supercomputer Center, Inc. January 7, 1994. Pbmfade does -# much the same thing, but handles non-Netpbm formats too, and is +# much the same thing, but handles non-Netpbm formats too, and is # implemented in a more primitive language. # ############################################################################## use strict; +use File::Temp; + +# +# 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); + sub doVersionHack($) { my ($argvR) = @_; @@ -52,280 +62,411 @@ sub doVersionHack($) { } } +my $tmpdir; +$tmpdir = File::Temp::tempdir("ppmfade.XXXXXX", CLEANUP => 1); -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 = $SPREAD; # default fading mode +sub commandLineArgs() { -doVersionHack(\@ARGV); + my ($firstFileNm, $lastFileNm, $mode, $baseNm); -my $n; # argument number + for (my $i = 0; $i < @ARGV; ++$i) { + my $arg = $ARGV[$i]; -for ($n = 0; $n < @ARGV; $n++) { - if ("$ARGV[$n]" eq "-f") { - $n++; - $first_file = $ARGV[$n]; - if (-e $first_file) { + if (0) { + } elsif ($arg eq "-f") { + ++$i; + $firstFileNm = $ARGV[$i]; + } elsif ($arg eq "-l") { + ++$i; + $lastFileNm = $ARGV[$i]; + } elsif ($arg eq "-base") { + ++$i; + $baseNm = $ARGV[$i]; + } elsif ($arg eq "-spread") { + $mode = 'SPREAD'; + } elsif ($arg eq "-shift") { + $mode = 'SHIFT'; + } elsif ($arg eq "-relief") { + $mode = 'RELIEF'; + } elsif ($arg eq "-oil") { + $mode = 'OIL'; + } elsif ($arg eq "-edge") { + $mode = 'EDGE'; + } elsif ($arg eq "-bentley") { + $mode ='BENTLEY'; + } elsif ($arg eq "-block") { + $mode = 'BLOCK'; + } elsif ($arg eq "-mix") { + $mode = 'MIX'; } else { - print "I can't find first file '$first_file'\n"; - exit 20; + if (substr($arg, 0, 1) eq '-') { + print STDERR ("Unknown option '$arg'. " . + "We understand -f, -l, -base, " . + "-spread, -shift, -relief, -oil, -edge, " . + "-bentley, -block, and -mix\n"); + } else { + print STDERR ("There are no non-option arguments possible. " . + "You specified '$arg'\n"); + } + exit 100; } - } elsif ($ARGV[$n] eq "-l") { - $n++; - $last_file = $ARGV[$n]; - if (-e $last_file) { + } + + if (!defined($firstFileNm) && !defined($lastFileNm)) { + print STDERR ("You must specify -f or -l (or both)\n"); + exit 90; + } + + if (!defined($mode)) { + $mode = 'SPREAD'; + } + + if (!defined($baseNm)) { + $baseNm = 'fade'; + } + + return $mode, $firstFileNm, $lastFileNm, $baseNm; +} + + + +sub imageDimensions($$) { + my ($firstFileNm, $lastFileNm) = @_; + + my ($width, $height); + + if (defined($firstFileNm)) { + if ((`pnmfile $firstFileNm` =~ m{\b(\d+)\sby\s(\d+)} )) { + $width = $1; $height = $2; } else { - print "I can't find last file '$last_file'\n"; - exit 20; + print STDERR + ("Unrecognized results from pnmfile on $firstFileNm.\n"); + exit(50); } - } 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; } else { - print "Unknown argument: $ARGV[$n]\n"; - exit 100; - } + # $lastFileNm is defined + if ((`pnmfile $lastFileNm` =~ m{\b(\d+)\sby\s(\d+)} )) { + $width = $1; $height = $2; + } else { + print STDERR + ("Unrecognized results from pnmfile on $firstFileNm.\n"); + exit(50); + } + } + return $width, $height; } -# -# 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; + + + +sub spreadOne($) { + my ($frameNum) = @_; + + if ($frameNum <= 10) { + my $n = $spline20[$frameNum] * 100; + system("ppmspread $n $tmpdir/first.ppm >$tmpdir/this.ppm"); + } elsif ($frameNum <= 20) { + my $n; + $n = $spline20[$frameNum] * 100; + system("ppmspread $n $tmpdir/first.ppm >$tmpdir/junk1a.ppm"); + $n = (1-$spline20[$frameNum-10]) * 100; + system("ppmspread $n $tmpdir/last.ppm >$tmpdir/junk2a.ppm"); + $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1a.ppm $tmpdir/junk2a.ppm " . + ">$tmpdir/this.ppm"); } else { - print("Unrecognized results from pnmfile on $first_file.\n"); - exit(50); + my $n = (1-$spline20[$frameNum-10])*100; + system("ppmspread $n $tmpdir/last.ppm >$tmpdir/this.ppm"); } -} elsif ($last_file ne "undefined") { - if ((`pnmfile $last_file` =~ m{\b(\d+)\sby\s(\d+)} )) { - $width = $1; $height = $2; +} + + + +sub shiftOne($) { + my ($frameNum) = @_; + + if ($frameNum <= 10) { + my $n = $spline20[$frameNum] * 100; + system("ppmshift $n $tmpdir/first.ppm >$tmpdir/this.ppm"); + } elsif ($frameNum <= 20) { + my $n; + $n = $spline20[$frameNum] * 100; + system("ppmshift $n $tmpdir/first.ppm >$tmpdir/junk1a.ppm"); + $n = (1-$spline20[$frameNum-10])*100; + system("ppmshift $n $tmpdir/last.ppm >$tmpdir/junk2a.ppm"); + $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1a.ppm $tmpdir/junk2a.ppm " . + ">$tmpdir/this.ppm"); } else { - print("Unrecognized results from pnmfile on $first_file.\n"); - exit(50); + my $n = (1-$spline20[$frameNum-10]) * 100; + system("ppmshift $n $tmpdir/last.ppm >$tmpdir/this.ppm"); } -} else { - print("ppmfade: You must specify -f or -l (or both)\n"); - exit(90); } -print("Frames are " . $width . "W x " . $height . "H\n"); -if ($first_file eq "undefined") { - print "Fading from black to "; - system("ppmmake \\#000 $width $height >junk1$$.ppm"); -} else { - print "Fading from $first_file to "; - system("cp", $first_file, "junk1$$.ppm"); + +sub reliefOne($) { + my ($frameNum) = @_; + + if ($frameNum == 1) { + system("ppmrelief $tmpdir/first.ppm >$tmpdir/junk1r.ppm"); + } + if ($frameNum <= 10) { + my $n = $spline10[$frameNum]; + system("ppmmix $n $tmpdir/first.ppm $tmpdir/junk1r.ppm " . + ">$tmpdir/this.ppm"); + } elsif ($frameNum <= 20) { + my $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1r.ppm $tmpdir/junk2r.ppm " . + ">$tmpdir/this.ppm"); + } else { + my $n = $spline10[$frameNum-20]; + system("ppmmix $n $tmpdir/junk2r.ppm $tmpdir/last.ppm " . + ">$tmpdir/this.ppm"); + } + if ($frameNum == 10) { + system("ppmrelief $tmpdir/last.ppm >$tmpdir/junk2r.ppm"); + } } -if ($last_file eq "undefined") { - print "black.\n"; - system("ppmmake \\#000 $width $height >junk2$$.ppm"); -} else { - print "$last_file\n"; - system("cp", $last_file, "junk2$$.ppm"); + + +sub oilOne($) { + my ($frameNum) = @_; + + if ($frameNum == 1) { + system("ppmtopgm $tmpdir/first.ppm | pgmoil >$tmpdir/junko.ppm"); + system("rgb3toppm " . + "$tmpdir/junko.ppm $tmpdir/junko.ppm $tmpdir/junko.ppm " . + ">$tmpdir/junk1o.ppm"); + } + if ($frameNum <= 10) { + my $n = $spline10[$frameNum]; + system("ppmmix $n $tmpdir/first.ppm $tmpdir/junk1o.ppm " . + ">$tmpdir/this.ppm"); + } elsif ($frameNum <= 20) { + my $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1o.ppm $tmpdir/junk2o.ppm " . + ">$tmpdir/this.ppm"); + } else { + my $n = $spline10[$frameNum-20]; + system("ppmmix $n $tmpdir/junk2o.ppm $tmpdir/last.ppm " . + ">$tmpdir/this.ppm"); + } + if ($frameNum == 10) { + system("ppmtopgm $tmpdir/last.ppm | pgmoil >$tmpdir/junko.ppm"); + system("rgb3toppm " . + "$tmpdir/junko.ppm $tmpdir/junko.ppm $tmpdir/junko.ppm " . + ">$tmpdir/junk2o.ppm"); + } } -# -# Perform the fade. -# -# Here's what our temporary files are: -# junk1$$.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 junk1$$.ppm >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n; - $n = $spline20[$i] * 100; - system("ppmspread $n junk1$$.ppm >junk1a$$.ppm"); - $n = (1-$spline20[$i-10]) * 100; - system("ppmspread $n junk2$$.ppm >junk2a$$.ppm"); - $n = $spline10[$i-10]; - system("ppmmix $n junk1a$$.ppm junk2a$$.ppm >junk3$$.ppm"); - } else { - my $n = (1-$spline20[$i-10])*100; - system("ppmspread $n junk2$$.ppm >junk3$$.ppm"); - } - } elsif ($mode eq $SHIFT) { - if ($i <= 10) { - my $n = $spline20[$i] * 100; - system("ppmshift $n junk1$$.ppm >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n; - $n = $spline20[$i] * 100; - system("ppmshift $n junk1$$.ppm >junk1a$$.ppm"); - $n = (1-$spline20[$i-10])*100; - system("ppmshift $n junk2$$.ppm >junk2a$$.ppm"); - $n = $spline10[$i-10]; - system("ppmmix $n junk1a$$.ppm junk2a$$.ppm >junk3$$.ppm"); - } else { - my $n = (1-$spline20[$i-10]) * 100; - system("ppmshift $n junk2$$.ppm >junk3$$.ppm"); - } - } elsif ($mode eq $RELIEF) { - if ($i == 1) { - system("ppmrelief junk1$$.ppm >junk1r$$.ppm"); - } - if ($i <= 10) { - my $n = $spline10[$i]; - system("ppmmix $n junk1$$.ppm junk1r$$.ppm >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n = $spline10[$i-10]; - system("ppmmix $n junk1r$$.ppm junk2r$$.ppm >junk3$$.ppm"); - } else { - my $n = $spline10[$i-20]; - system("ppmmix $n junk2r$$.ppm junk2$$.ppm >junk3$$.ppm"); - } - if ($i == 10) { - system("ppmrelief junk2$$.ppm >junk2r$$.ppm"); - } - } elsif ($mode eq $OIL) { - if ($i == 1) { - system("ppmtopgm junk1$$.ppm | pgmoil >junko$$.ppm"); - system("rgb3toppm junko$$.ppm junko$$.ppm junko$$.ppm " . - ">junk1o$$.ppm"); - } - if ($i <= 10) { - my $n = $spline10[$i]; - system("ppmmix $n junk1$$.ppm junk1o$$.ppm >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n = $spline10[$i-10]; - system("ppmmix $n junk1o$$.ppm junk2o$$.ppm >junk3$$.ppm"); - } else { - my $n = $spline10[$i-20]; - system("ppmmix $n junk2o$$.ppm junk2$$.ppm >junk3$$.ppm"); - } - if ($i == 10) { - system("ppmtopgm junk2$$.ppm | pgmoil >junko$$.ppm"); - system("rgb3toppm junko$$.ppm junko$$.ppm junko$$.ppm " . - ">junk2o$$.ppm"); - } - } elsif ($mode eq $EDGE) { - if ($i == 1) { - system("ppmtopgm junk1$$.ppm | pgmedge >junko$$.ppm"); - system("rgb3toppm junko$$.ppm junko$$.ppm junko$$.ppm " . - ">junk1o$$.ppm"); - } - if ($i <= 10) { - my $n = $spline10[$i]; - system("ppmmix $n junk1$$.ppm junk1o$$.ppm >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n = $spline10[$i-10]; - system("ppmmix $n junk1o$$.ppm junk2o$$.ppm >junk3$$.ppm"); - } else { - my $n = $spline10[$i-20]; - system("ppmmix $n junk2o$$.ppm junk2$$.ppm >junk3$$.ppm"); - } - if ($i == 10) { - system("ppmtopgm junk2$$.ppm | pgmedge >junko$$.ppm"); - system("rgb3toppm junko$$.ppm junko$$.ppm junko$$.ppm " . - ">junk2o$$.ppm"); - } - } elsif ($mode eq $BENTLEY) { - if ($i == 1) { - system("ppmtopgm junk1$$.ppm | pgmbentley >junko$$.ppm"); - system("rgb3toppm junko$$.ppm junko$$.ppm junko$$.ppm " . - ">junk1o$$.ppm"); - } - if ($i <= 10) { - my $n = $spline10[$i]; - system("ppmmix $n junk1$$.ppm junk1o$$.ppm >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n = $spline10[$i-10]; - system("ppmmix $n junk1o$$.ppm junk2o$$.ppm >junk3$$.ppm"); - } else { - my $n = $spline10[$i-20]; - system("ppmmix $n junk2o$$.ppm junk2$$.ppm >junk3$$.ppm"); - } - if ($i == 10) { - system("ppmtopgm junk2$$.ppm | pgmbentley >junko$$.ppm"); - system("rgb3toppm junko$$.ppm junko$$.ppm junko$$.ppm " . - ">junk2o$$.ppm"); - } - } elsif ($mode eq $BLOCK) { - if ($i <= 10) { - my $n = 1 - 1.9*$spline20[$i]; - system("pamscale $n junk1$$.ppm | " . - "pamscale -width $width -height $height >junk3$$.ppm"); - } elsif ($i <= 20) { - my $n = $spline10[$i-10]; - system("ppmmix $n junk1a$$.ppm junk2a$$.ppm >junk3$$.ppm"); - } else { - my $n = 1 - 1.9*$spline20[31-$i]; - system("pamscale $n junk2$$.ppm | " . - "pamscale -width $width -height $height >junk3$$.ppm"); + +sub edgeOne($) { + my ($frameNum) = @_; + + if ($frameNum == 1) { + system("ppmtopgm $tmpdir/first.ppm | pgmedge >$tmpdir/junko.ppm"); + system("rgb3toppm " . + "$tmpdir/junko.ppm $tmpdir/junko.ppm $tmpdir/junko.ppm " . + ">$tmpdir/junk1o.ppm"); + } + if ($frameNum <= 10) { + my $n = $spline10[$frameNum]; + system("ppmmix $n $tmpdir/first.ppm $tmpdir/junk1o.ppm " . + ">$tmpdir/this.ppm"); + } elsif ($frameNum <= 20) { + my $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1o.ppm $tmpdir/junk2o.ppm " . + ">$tmpdir/this.ppm"); + } else { + my $n = $spline10[$frameNum-20]; + system("ppmmix $n $tmpdir/junk2o.ppm $tmpdir/last.ppm " . + ">$tmpdir/this.ppm"); + } + if ($frameNum == 10) { + system("ppmtopgm $tmpdir/last.ppm | pgmedge >$tmpdir/junko.ppm"); + system("rgb3toppm " . + "$tmpdir/junko.ppm $tmpdir/junko.ppm $tmpdir/junko.ppm " . + ">$tmpdir/junk2o.ppm"); + } +} + + + +sub bentleyOne($) { + my ($frameNum) = @_; + + if ($frameNum == 1) { + system("ppmtopgm $tmpdir/first.ppm | pgmbentley >$tmpdir/junko.ppm"); + system("rgb3toppm " . + "$tmpdir/junko.ppm $tmpdir/junko.ppm $tmpdir/junko.ppm " . + ">$tmpdir/junk1o.ppm"); + } + if ($frameNum <= 10) { + my $n = $spline10[$frameNum]; + system("ppmmix $n $tmpdir/first.ppm $tmpdir/junk1o.ppm " . + ">$tmpdir/this.ppm"); + } elsif ($frameNum <= 20) { + my $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1o.ppm $tmpdir/junk2o.ppm " . + ">$tmpdir/this.ppm"); + } else { + my $n = $spline10[$frameNum-20]; + system("ppmmix $n $tmpdir/junk2o.ppm $tmpdir/last.ppm " . + ">$tmpdir/this.ppm"); + } + if ($frameNum == 10) { + system("ppmtopgm $tmpdir/last.ppm | pgmbentley " . + ">$tmpdir/junko.ppm"); + system("rgb3toppm $tmpdir/junko.ppm $tmpdir/junko.ppm " . + "$tmpdir/junko.ppm " . + ">$tmpdir/junk2o.ppm"); + } +} + + + +sub blockOne($$$) { + my ($frameNum, $width, $height) = @_; + + if ($frameNum <= 10) { + my $n = 1 - 1.9*$spline20[$frameNum]; + system("pamscale $n $tmpdir/first.ppm | " . + "pamscale -width $width -height $height " . + ">$tmpdir/this.ppm"); + if ($frameNum == 10) { + system("cp", "$tmpdir/this.ppm", "$tmpdir/junk1a.ppm"); + system("pamscale $n $tmpdir/last.ppm | " . + "pamscale -width $width -height $height " . + ">$tmpdir/junk2a.ppm"); } - if ($i == 10) { - system("cp", "junk3$$.ppm", "junk1a$$.ppm"); - system("pamscale $n junk2$$.ppm | " . - "pamscale -width $width -height $height >junk2a$$.ppm"); - } - } elsif ($mode eq $MIX) { - my $fade_factor = sqrt(1/($nframes-$i+1)); - system("ppmmix $fade_factor junk1$$.ppm junk2$$.ppm >junk3$$.ppm"); + } elsif ($frameNum <= 20) { + my $n = $spline10[$frameNum-10]; + system("ppmmix $n $tmpdir/junk1a.ppm $tmpdir/junk2a.ppm " . + ">$tmpdir/this.ppm"); } else { - print("Internal error: impossible mode value '$mode'\n"); + my $n = 1 - 1.9*$spline20[31-$frameNum]; + system("pamscale $n $tmpdir/last.ppm | " . + "pamscale -width $width -height $height " . + ">$tmpdir/this.ppm"); } +} + + + +sub mixOne($$) { + my ($frameNum, $nFrame) = @_; - my $outfile = sprintf("%s.%04d.ppm", $base_name, $i); - system("cp", "junk3$$.ppm", $outfile); + my $fadeFactor = sqrt(1/($nFrame - $frameNum + 1)); + + system("ppmmix $fadeFactor $tmpdir/first.ppm $tmpdir/last.ppm " . + ">$tmpdir/this.ppm"); } + + +sub fade($$$$$) { + my ($nFrame, $mode, $width, $height, $baseNm) = @_; +#----------------------------------------------------------------------------- +# Do the fade starting, from image "first.ppm" in the temporary direct +# $tmpdir and ending up at "last.ppm", creating $nFrame frames, including +# the first and last. # -# Clean up shop. +# Make the outputs $width by $height. # -system("rm junk*$$.ppm"); +# Name the result files $baseNm.NNNN.ppm. +#----------------------------------------------------------------------------- + + # Here's what our temporary files are: + # first.ppm: The original (fade-from) image + # last.ppm: The target (fade-from) image + # this.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 $frameNum; # Frame number + for ($frameNum = 1; $frameNum <= $nFrame; ++$frameNum) { + + print("Creating Frame $frameNum of $nFrame...\n"); + + if ($mode eq 'SPREAD') { + spreadOne($frameNum); + } elsif ($mode eq 'SHIFT') { + shiftOne($frameNum); + } elsif ($mode eq 'RELIEF') { + reliefOne($frameNum); + } elsif ($mode eq 'OIL') { + oilOne($frameNum); + } elsif ($mode eq 'EDGE') { + edgeOne($frameNum); + } elsif ($mode eq 'BENTLEY') { + bentleyOne($frameNum); + } elsif ($mode eq 'BLOCK') { + blockOne($frameNum, $width, $height); + } elsif ($mode eq 'MIX') { + mixOne($frameNum, $nFrame); + } else { + print("INTERNAL ERROR: impossible mode value '$mode'\n"); + } + + my $outFileNm = sprintf("%s.%04d.ppm", $baseNm, $frameNum); + system("cp", "$tmpdir/this.ppm", $outFileNm); + } +} + + + +#----------------------------------------------------------------------------- +# MAINLINE +#----------------------------------------------------------------------------- + +my $nFrame = 30; + # Number of images in created sequence, including the fade-from and + # fade-to images. In standard video, 30 frames is one second. + +doVersionHack(\@ARGV); + +my ($mode, $firstFileNm, $lastFileNm, $baseNm) = commandLineArgs(); + +if (defined($firstFileNm) && !-e($firstFileNm)) { + print STDERR ("First file '$firstFileNm' does not exist\n"); + exit 20; +} + +if (defined($lastFileNm) && !-e($lastFileNm)) { + print STDERR ("Last file '$lastFileNm' does not exist\n"); + exit 20; +} + +my ($width, $height) = imageDimensions($firstFileNm, $lastFileNm); + + # width and height of our frames in pixels + +print("Frames are " . $width . "W x " . $height . "H\n"); + +my $fromDesc = defined($firstFileNm) ? "'$firstFileNm'" : "black"; +my $toDesc = defined($lastFileNm) ? "'$lastFileNm'" : "black"; + +if (!defined($firstFileNm)) { + system("ppmmake \\#000 $width $height >$tmpdir/first.ppm"); +} else { + system("cp", $firstFileNm, "$tmpdir/first.ppm"); +} + +if (!defined($lastFileNm)) { + system("ppmmake \\#000 $width $height >$tmpdir/last.ppm"); +} else { + system("cp", $lastFileNm, "$tmpdir/last.ppm"); +} + +print("Fading from $fromDesc to $toDesc\n"); + +fade($nFrame, $mode, $width, $height, $baseNm); exit(0); |