.\" Automatically generated by Pod::Man 2.28 (Pod::Simple 3.28)
.\"
.\" Standard preamble:
.\" ========================================================================
.de Sp \" Vertical space (when we can't use .PP)
.if t .sp .5v
.if n .sp
..
.de Vb \" Begin verbatim text
.ft CW
.nf
.ne \\$1
..
.de Ve \" End verbatim text
.ft R
.fi
..
.\" Set up some character translations and predefined strings.  \*(-- will
.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left
.\" double quote, and \*(R" will give a right double quote.  \*(C+ will
.\" give a nicer C++.  Capital omega is used to do unbreakable dashes and
.\" therefore won't be available.  \*(C` and \*(C' expand to `' in nroff,
.\" nothing in troff, for use with C<>.
.tr \(*W-
.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p'
.ie n \{\
.    ds -- \(*W-
.    ds PI pi
.    if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch
.    if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\"  diablo 12 pitch
.    ds L" ""
.    ds R" ""
.    ds C` ""
.    ds C' ""
'br\}
.el\{\
.    ds -- \|\(em\|
.    ds PI \(*p
.    ds L" ``
.    ds R" ''
.    ds C`
.    ds C'
'br\}
.\"
.\" Escape single quotes in literal strings from groff's Unicode transform.
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\"
.\" If the F register is turned on, we'll generate index entries on stderr for
.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
.\" entries marked with X<> in POD.  Of course, you'll have to process the
.\" output yourself in some meaningful fashion.
.\"
.\" Avoid warning from groff about undefined register 'F'.
.de IX
..
.nr rF 0
.if \n(.g .if rF .nr rF 1
.if (\n(rF:(\n(.g==0)) \{
.    if \nF \{
.        de IX
.        tm Index:\\$1\t\\n%\t"\\$2"
..
.        if !\nF==2 \{
.            nr % 0
.            nr F 2
.        \}
.    \}
.\}
.rr rF
.\"
.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
.\" Fear.  Run.  Save yourself.  No user-serviceable parts.
.    \" fudge factors for nroff and troff
.if n \{\
.    ds #H 0
.    ds #V .8m
.    ds #F .3m
.    ds #[ \f1
.    ds #] \fP
.\}
.if t \{\
.    ds #H ((1u-(\\\\n(.fu%2u))*.13m)
.    ds #V .6m
.    ds #F 0
.    ds #[ \&
.    ds #] \&
.\}
.    \" simple accents for nroff and troff
.if n \{\
.    ds ' \&
.    ds ` \&
.    ds ^ \&
.    ds , \&
.    ds ~ ~
.    ds /
.\}
.if t \{\
.    ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u"
.    ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u'
.    ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u'
.    ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u'
.    ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u'
.    ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u'
.\}
.    \" troff and (daisy-wheel) nroff accents
.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V'
.ds 8 \h'\*(#H'\(*b\h'-\*(#H'
.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#]
.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H'
.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u'
.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#]
.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#]
.ds ae a\h'-(\w'a'u*4/10)'e
.ds Ae A\h'-(\w'A'u*4/10)'E
.    \" corrections for vroff
.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u'
.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u'
.    \" for low resolution devices (crt and lpr)
.if \n(.H>23 .if \n(.V>19 \
\{\
.    ds : e
.    ds 8 ss
.    ds o a
.    ds d- d\h'-1'\(ga
.    ds D- D\h'-1'\(hy
.    ds th \o'bp'
.    ds Th \o'LP'
.    ds ae ae
.    ds Ae AE
.\}
.rm #[ #] #H #V #F C
.\" ========================================================================
.\"
.IX Title "Imager::Fill 3pm"
.TH Imager::Fill 3pm "2014-01-10" "perl v5.20.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
.Vb 1
\&  Imager::Fill \- general fill types
.Ve
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 2
\&  use Imager;
\&  use Imager::Fill;
\&
\&  my $fill1 = Imager::Fill\->new(solid=>$color, combine=>$combine);
\&  my $fill2 = Imager::Fill\->new(hatch=>\*(Aqvline2\*(Aq, fg=>$color1, bg=>$color2,
\&                                dx=>$dx, dy=>$dy);
\&  my $fill3 = Imager::Fill\->new(fountain=>$type, ...);
\&  my $fill4 = Imager::Fill\->new(image=>$img, ...);
\&  my $fill5 = Imager::Fill\->new(type => "opacity", other => $fill,
\&                                opacity => ...);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Creates fill objects for use by most filled area drawing functions.
.PP
All fills are created with the new method.
.IP "new" 4
.IX Item "new"
.Vb 1
\&  my $fill = Imager::Fill\->new(...);
.Ve
.Sp
The parameters depend on the type of fill being created.  See below
for details.
.PP
The currently available fills are:
.IP "\(bu" 4
solid
.IP "\(bu" 4
hatch
.IP "\(bu" 4
fountain (similar to gradients in paint software)
.IP "\(bu" 4
image \- fill with an image, possibly transformed
.IP "\(bu" 4
opacity \- a lower opacity version of some other fill
.SH "Common options"
.IX Header "Common options"
.IP "combine" 4
.IX Item "combine"
The way in which the fill data is combined with the underlying image.
See \*(L"Combine Types\*(R" in Imager::Draw.
.PP
In general colors can be specified as Imager::Color or
Imager::Color::Float objects.  The fill object will typically store
both types and convert from one to the other.  If a fill takes 2 color
objects they should have the same type.
.SS "Solid fills"
.IX Subsection "Solid fills"
.Vb 1
\&  my $fill = Imager::Fill\->new(solid=>$color, combine =>$combine)
.Ve
.PP
Creates a solid fill, the only required parameter is \f(CW\*(C`solid\*(C'\fR which
should be the color to fill with.
.PP
A translucent red fill:
.PP
.Vb 1
\&  my $red = Imager::Fill\->new(solid => "FF000080", combine => "normal");
.Ve
.SS "Hatched fills"
.IX Subsection "Hatched fills"
.Vb 2
\&  my $fill = Imager::Fill\->new(hatch=>$type, fg=>$fgcolor, bg=>$bgcolor,
\&                               dx=>$dx, $dy=>$dy);
.Ve
.PP
Creates a hatched fill.  You can specify the following keywords:
.IP "\(bu" 4
\&\f(CW\*(C`hatch\*(C'\fR \- The type of hatch to perform, this can either be the
numeric index of the hatch (not recommended), the symbolic name of the
hatch, or an array of 8 integers which specify the pattern of the
hatch.
.Sp
Hatches are represented as cells 8x8 arrays of bits, which limits their
complexity.
.Sp
Current hatch names are:
.RS 4
.IP "\(bu" 4
\&\f(CW\*(C`check1x1\*(C'\fR, \f(CW\*(C`check2x2\*(C'\fR, \f(CW\*(C`check4x4\*(C'\fR \- checkerboards at various sizes
.IP "\(bu" 4
\&\f(CW\*(C`vline1\*(C'\fR, \f(CW\*(C`vline2\*(C'\fR, \f(CW\*(C`vline4\*(C'\fR \- 1, 2, or 4 vertical lines per cell
.IP "\(bu" 4
\&\f(CW\*(C`hline1\*(C'\fR, \f(CW\*(C`hline2\*(C'\fR, \f(CW\*(C`hline4\*(C'\fR \- 1, 2, or 4 horizontal lines per cell
.IP "\(bu" 4
\&\f(CW\*(C`slash1\*(C'\fR, \f(CW\*(C`slash2\*(C'\fR \- 1 or 2 / lines per cell.
.IP "\(bu" 4
\&\f(CW\*(C`slosh1\*(C'\fR, \f(CW\*(C`slosh2\*(C'\fR \- 1 or 2 \e lines per cell
.IP "\(bu" 4
\&\f(CW\*(C`grid1\*(C'\fR, \f(CW\*(C`grid2\*(C'\fR, \f(CW\*(C`grid4\*(C'\fR \- 1, 2, or 4 vertical and horizontal
lines per cell
.IP "\(bu" 4
\&\f(CW\*(C`dots1\*(C'\fR, \f(CW\*(C`dots4\*(C'\fR, \f(CW\*(C`dots16\*(C'\fR \- 1, 4 or 16 dots per cell
.IP "\(bu" 4
\&\f(CW\*(C`stipple\*(C'\fR, \f(CW\*(C`stipple2\*(C'\fR \- see the samples
.IP "\(bu" 4
\&\f(CW\*(C`weave\*(C'\fR \- I hope this one is obvious.
.IP "\(bu" 4
\&\f(CW\*(C`cross1\*(C'\fR, \f(CW\*(C`cross2\*(C'\fR \- 2 densities of crosshatch
.IP "\(bu" 4
\&\f(CW\*(C`vlozenge\*(C'\fR, \f(CW\*(C`hlozenge\*(C'\fR \- something like lozenge tiles
.IP "\(bu" 4
\&\f(CW\*(C`scalesdown\*(C'\fR, \f(CW\*(C`scalesup\*(C'\fR, \f(CW\*(C`scalesleft\*(C'\fR, \f(CW\*(C`scalesright\*(C'\fR \- Vaguely
like fish scales in each direction.
.IP "\(bu" 4
\&\f(CW\*(C`tile_L\*(C'\fR \- L\-shaped tiles
.RE
.RS 4
.RE
.IP "\(bu" 4
\&\f(CW\*(C`fg\*(C'\fR, \f(CW\*(C`bg\*(C'\fR \- The \f(CW\*(C`fg\*(C'\fR color is rendered where bits are set in the
hatch, and the \f(CW\*(C`bg\*(C'\fR where they are clear.  If you use a transparent
\&\f(CW\*(C`fg\*(C'\fR or \f(CW\*(C`bg\*(C'\fR, and set combine, you can overlay the hatch onto an
existing image.
.Sp
\&\f(CW\*(C`fg\*(C'\fR defaults to black, \f(CW\*(C`bg\*(C'\fR to white.
.IP "\(bu" 4
\&\f(CW\*(C`dx\*(C'\fR, \f(CW\*(C`dy\*(C'\fR \- An offset into the hatch cell.  Both default to zero.
.PP
A blue and white 4\-pixel check pattern:
.PP
.Vb 1
\&  my $fill = Imager::Fill\->new(hatch => "check2x2", fg => "blue");
.Ve
.PP
You can call Imager::Fill\->hatches for a list of hatch names.
.SS "Fountain fills"
.IX Subsection "Fountain fills"
.Vb 4
\&  my $fill = Imager::Fill\->new(fountain=>$ftype, 
\&       xa=>$xa, ya=>$ya, xb=>$xb, yb=>$yb, 
\&       segments=>$segments, repeat=>$repeat, combine=>$combine, 
\&       super_sample=>$super_sample, ssample_param=>$ssample_param);
.Ve
.PP
This fills the given region with a fountain fill.  This is exactly the
same fill as the \f(CW\*(C`fountain\*(C'\fR filter, but is restricted to the shape
you are drawing, and the fountain parameter supplies the fill type,
and is required.
.PP
A radial fill from white to transparent centered on (50, 50) with a 50
pixel radius:
.PP
.Vb 6
\&  use Imager::Fountain;
\&  my $segs = Imager::Fountain\->simple(colors => [ "FFFFFF", "FFFFFF00" ],
\&                                      positions => [ 0, 1 ]);
\&  my $fill = Imager::Fill\->new(fountain => "radial", segments => $segs,
\&                               xa => 50, ya => 50, xb => 0, yb => 50,
\&                               combine => "normal");
.Ve
.SS "Image Fills"
.IX Subsection "Image Fills"
.Vb 2
\&  my $fill = Imager::Fill\->new(image=>$src, xoff=>$xoff, yoff=>$yoff,
\&                               matrix=>$matrix, combine => $combine);
.Ve
.PP
Fills the given image with a tiled version of the given image.  The
first non-zero value of \f(CW\*(C`xoff\*(C'\fR or \f(CW\*(C`yoff\*(C'\fR will provide an offset
along the given axis between rows or columns of tiles respectively.
.PP
The matrix parameter performs a co-ordinate transformation from the
co-ordinates in the target image to the fill image co-ordinates.
Linear interpolation is used to determine the fill pixel.  You can use
the Imager::Matrix2d class to create transformation matrices.
.PP
The matrix parameter will significantly slow down the fill.
.PP
.Vb 2
\&  # some image to act as a texture
\&  my $txim = Imager\->new(...);
\&
\&  # simple tiling
\&  my $fill = Imager::Fill\->new(image => $txim);
\&
\&  # tile with a vertical offset
\&  my $fill = Imager::Fill\->new(image => $txim, yoff => 10);
\&
\&  # tile with a horizontal offset
\&  my $fill = Imager::Fill\->new(image => $txim, xoff => 10);
\&
\&  # rotated
\&  use Imager::Matrix2d;
\&  my $fill = Imager::Fill\->new(image => $txim,
\&                matrix => Imager::Matrix2d\->rotate(degrees => 20));
.Ve
.SS "Opacity modification fill"
.IX Subsection "Opacity modification fill"
.Vb 2
\&  my $fill = Imager::Fill\->new(type => "opacity",
\&      other => $fill, opacity => 0.25);
.Ve
.PP
This can be used to make a fill that is a more translucent or opaque
version of an existing fill.  This is intended for use where you
receive a fill object as a parameter and need to change the opacity.
.PP
Parameters:
.IP "\(bu" 4
type => \*(L"opacity\*(R" \- Required
.IP "\(bu" 4
other \- the fill to produce a modified version of.  This must be an
Imager::Fill object.  Required.
.IP "\(bu" 4
opacity \- multiplier for the source fill opacity.  Default: 0.5.
.PP
The source fills combine mode is used.
.PP
.Vb 2
\&  my $hatch = Imager::Fill\->new(hatch => "check4x4", combine => "normal");
\&  my $fill = Imager::Fill\->new(type => "opacity", other => $hatch);
.Ve
.SH "OTHER METHODS"
.IX Header "OTHER METHODS"
.IP "Imager::Fill\->hatches" 4
.IX Item "Imager::Fill->hatches"
A list of all defined hatch names.
.IP "Imager::Fill\->combines" 4
.IX Item "Imager::Fill->combines"
A list of all combine types.
.SH "FUTURE PLANS"
.IX Header "FUTURE PLANS"
I'm planning on adding the following types of fills:
.IP "\(bu" 4
\&\f(CW\*(C`checkerboard\*(C'\fR \- combines 2 other fills in a checkerboard
.IP "\(bu" 4
\&\f(CW\*(C`combine\*(C'\fR \- combines 2 other fills using the levels of an image
.IP "\(bu" 4
\&\f(CW\*(C`regmach\*(C'\fR \- uses the \fItransform2()\fR register machine to create fills
.SH "AUTHOR"
.IX Header "AUTHOR"
Tony Cook <tony@develop\-help.com>
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIImager\fR\|(3)