{
callseq => [ qw(image bump elevation lightx lighty st) ],
defaults => { elevation=>0, st=> 2 },
- callsub => sub {
+ callsub => sub {
my %hsh = @_;
i_bumpmap($hsh{image}, $hsh{bump}{IMG}, $hsh{elevation},
$hsh{lightx}, $hsh{lighty}, $hsh{st});
},
};
+ $filters{bumpmap_complex} =
+ {
+ callseq => [ qw(image bump channel tx ty Lx Ly Lz cd cs n Ia Il Is) ],
+ defaults => {
+ channel => 0,
+ tx => 0,
+ ty => 0,
+ Lx => 0.2,
+ Ly => 0.4,
+ Lz => -1.0,
+ cd => 1.0,
+ cs => 40,
+ n => 1.3,
+ Ia => Imager::Color->new(rgb=>[0,0,0]),
+ Il => Imager::Color->new(rgb=>[255,255,255]),
+ Is => Imager::Color->new(rgb=>[255,255,255]),
+ },
+ callsub => sub {
+ my %hsh = @_;
+ i_bumpmap_complex($hsh{image}, $hsh{bump}{IMG}, $hsh{channel},
+ $hsh{tx}, $hsh{ty}, $hsh{Lx}, $hsh{Ly}, $hsh{Lz},
+ $hsh{cd}, $hsh{cs}, $hsh{n}, $hsh{Ia}, $hsh{Il},
+ $hsh{Is});
+ },
+ };
$filters{postlevels} =
{
callseq => [ qw(image levels) ],
$hsh{ssample_param}, $hsh{segments});
},
};
+ $filters{unsharpmask} =
+ {
+ callseq => [ qw(image stddev scale) ],
+ defaults => { stddev=>2.0, scale=>1.0 },
+ callsub =>
+ sub {
+ my %hsh = @_;
+ i_unsharp_mask($hsh{image}, $hsh{stddev}, $hsh{scale});
+ },
+ };
$FORMATGUESS=\&def_guess_type;
}
$self->{ERRSTR}='format not supported'; return undef;
}
- my %iolready=(jpeg=>1, png=>1, tiff=>1, pnm=>1, raw=>1, bmp=>1);
+ my %iolready=(jpeg=>1, png=>1, tiff=>1, pnm=>1, raw=>1, bmp=>1, tga=>1);
if ($iolready{$input{type}}) {
# Setup data source
$self->{DEBUG} && print "loading a bmp file\n";
}
+ if ( $input{type} eq 'tga' ) {
+ $self->{IMG}=i_readtga_wiol( $IO, -1 ); # Fixme, check if that length parameter is ever needed
+ if ( !defined($self->{IMG}) ) {
+ $self->{ERRSTR}=$self->_error_as_msg();
+# $self->{ERRSTR}='unable to read tga image';
+ return undef;
+ }
+ $self->{DEBUG} && print "loading a tga file\n";
+ }
+
if ( $input{type} eq 'raw' ) {
my %params=(datachannels=>3,storechannels=>3,interleave=>1,%input);
fax_fine=>1, @_);
my ($fh, $rc, $fd, $IO);
- my %iolready=( tiff=>1, raw=>1, png=>1, pnm=>1, bmp=>1, jpeg=>1 ); # this will be SO MUCH BETTER once they are all in there
+ my %iolready=( tiff=>1, raw=>1, png=>1, pnm=>1, bmp=>1, jpeg=>1, tga=>1 ); # this will be SO MUCH BETTER once they are all in there
unless ($self->{IMG}) { $self->{ERRSTR}='empty input image'; return undef; }
return undef;
}
$self->{DEBUG} && print "writing a bmp file\n";
+ } elsif ( $input{type} eq 'tga' ) {
+ if ( !i_writetga_wiol($self->{IMG}, $IO) ) {
+ $self->{ERRSTR}=$self->_error_as_msg();
+# $self->{ERRSTR}='unable to write tga image';
+ return undef;
+ }
+ $self->{DEBUG} && print "writing a tga file\n";
}
if (exists $input{'data'}) {
$opts{'d2'}, $opts{fill}{fill});
}
else {
- i_arc($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},$opts{'d1'},
- $opts{'d2'},$opts{'color'});
+ if ($opts{d1} == 0 && $opts{d2} == 361 && $opts{aa}) {
+ i_circle_aa($self->{IMG}, $opts{'x'}, $opts{'y'}, $opts{'r'},
+ $opts{'color'});
+ }
+ else {
+ i_arc($self->{IMG},$opts{'x'},$opts{'y'},$opts{'r'},$opts{'d1'},
+ $opts{'d2'},$opts{'color'});
+ }
}
return $self;
return 'pnm' if ($ext =~ m/^p[pgb]m$/);
return 'png' if ($ext eq "png");
return 'bmp' if ($ext eq "bmp" || $ext eq "dib");
+ return 'tga' if ($ext eq "tga");
return 'gif' if ($ext eq "gif");
return ();
}
This is currently unimplemented due to some limitations in giflib.
+=item gif_eliminate_unused
+
+If this is true, when you write a paletted image any unused colors
+will be eliminated from its palette. This is set by default.
+
=back
=head2 Quantization options
left corner at (30,50). If no values are given for C<left>
or C<top> they will default to 0.
-A more complicated way of blending images is where one image is
+A more complicated way of blending images is where one image is
put 'over' the other with a certain amount of opaqueness. The
method that does this is rubthrough.
- $img->rubthrough(src=>$srcimage,tx=>30,ty=>50);
+ $img->rubthrough(src=>$srcimage,tx=>30,ty=>50);
That will take the image C<$srcimage> and overlay it with the upper
left corner at (30,50). You can rub 2 or 4 channel images onto a 3
Filter Arguments
autolevels lsat(0.1) usat(0.1) skew(0)
bumpmap bump elevation(0) lightx lighty st(2)
+ bumpmap_complex bump channel(0) tx(0) ty(0) Lx(0.2) Ly(0.4)
+ Lz(-1) cd(1.0) cs(40.0) n(1.3) Ia(0 0 0) Il(255 255 255)
+ Is(255 255 255)
contrast intensity
conv coef
fountain xa ya xb yb ftype(linear) repeat(none) combine(none)
postlevels levels(10)
radnoise xo(100) yo(100) ascale(17.0) rscale(0.02)
turbnoise xo(0.0) yo(0.0) scale(10.0)
+ unsharpmask stddev(2.0) scale(1.0)
watermark wmark pixdiff(10) tx(0) ty(0)
The default values are in parenthesis. All parameters must have some
image, with the light at (I<lightx>, I<lightty>), with a shadow length
of I<st>.
+=item bumpmap_complex
+
+uses the channel I<channel> image I<bump> as a bumpmap on your image.
+If Lz<0 the three L parameters are considered to be the direction of
+the light. If Lz>0 the L parameters are considered to be the light
+position. I<Ia> is the ambient colour, I<Il> is the light colour,
+I<Is> is the color of specular highlights. I<cd> is the diffuse
+coefficient and I<cs> is the specular coefficient. I<n> is the
+shininess of the surface.
+
=item contrast
scales each channel by I<intensity>. Values of I<intensity> < 1.0
the noise, and I<scale> the scale of the noise, with lower numbers
giving more detail.
+=item unsharpmask
+
+performs an unsharp mask on the image. This is the result of
+subtracting a gaussian blurred version of the image from the original.
+I<stddev> controls the stddev parameter of the gaussian blur. Each
+output pixel is: in + I<scale> * (in - blurred).
+
=item watermark
applies I<wmark> as a watermark on the image with strength I<pixdiff>,
=back
-The following tags are set when reading a Windows BMP file is read:
+The following tags are set when a Windows BMP file is read:
=over
projects / imager.git / blobdiff