/usr/lib/perl5/SDL/Tool/Graphic.pm is in libsdl-perl 2.2.5-1build2.
This file is owned by root:root, with mode 0o644.
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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 | #!/usr/bin/env perl
#
# Graphic.pm
#
# Copyright (C) 2005 David J. Goehrig <dgoehrig@cpan.org>
#
# ------------------------------------------------------------------------------
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# ------------------------------------------------------------------------------
#
# Please feel free to send questions, suggestions or improvements to:
#
# David J. Goehrig
# dgoehrig@cpan.org
#
package SDL::Tool::Graphic;
use strict;
use warnings;
use Carp;
use SDL;
use SDL::Config;
require SDL::Surface;
sub new {
my $proto = shift;
my $class = ref($proto) || $proto;
my $self = {};
bless $self, $class;
$self;
}
sub DESTROY {
# nothing to do
}
sub zoom {
my ( $self, $surface, $zoomx, $zoomy, $smooth) = @_;
croak "SDL::Tool::Graphic::zoom requires an SDL::Surface\n"
unless ( ref($surface) && $surface->isa('SDL::Surface'));
my $tmp = $$surface;
$$surface = SDL::GFXZoom($$surface, $zoomx, $zoomy, $smooth);
SDL::FreeSurface($tmp);
$surface;
}
sub rotoZoom {
my ( $self, $surface, $angle, $zoom, $smooth) = @_;
croak "SDL::Tool::Graphic::rotoZoom requires an SDL::Surface\n"
unless ( ref($surface) && $surface->isa('SDL::Surface'));
my $tmp = $$surface;
$$surface = SDL::GFXRotoZoom($$surface, $angle, $zoom, $smooth);
SDL::FreeSurface($tmp);
$surface;
}
sub grayScale {
my ( $self, $surface ) = @_;
my $workingSurface;
if($surface->isa('SDL::Surface')) {
$workingSurface = $$surface;
} else {
$workingSurface = $surface;
}
my $color;
my $width = SDL::SurfaceW($workingSurface);
my $height = SDL::SurfaceH($workingSurface);
for(my $x = 0; $x < $width; $x++){
for(my $y = 0; $y < $height; $y++){
my $origValue = SDL::SurfacePixel($workingSurface, $x, $y);
my $newValue = int(0.3*SDL::ColorR($origValue) + 0.59 * SDL::ColorG($origValue) + 0.11*SDL::ColorB($origValue));
SDL::SurfacePixel($workingSurface, $x, $y, SDL::NewColor($newValue, $newValue, $newValue));
}
}
if($surface->isa('SDL::Surface')) {
$surface = \$workingSurface;
} else {
$surface = $workingSurface;
}
}
sub invertColor {
my ( $self, $surface ) = @_;
#Added because of strict if we needed global
#do $workingSurface init outside subs.
my $workingSurface;
if($surface->isa('SDL::Surface')) {
$workingSurface = $$surface;
} else {
$workingSurface = $surface;
}
my $width = SDL::SurfaceW($workingSurface);
my $height = SDL::SurfaceH($workingSurface);
for(my $x = 0; $x < $width; $x++){
for(my $y = 0; $y < $height; $y++){
my $origValue = SDL::SurfacePixel($workingSurface, $x, $y);
my $newValue = int(0.3*SDL::ColorR($origValue) + 0.59 * SDL::ColorG($origValue) + 0.11*SDL::ColorB($origValue));
SDL::SurfacePixel($workingSurface, $x, $y, SDL::NewColor(255-SDL::ColorR($origValue), 255 - SDL::ColorG($origValue), 255 - SDL::ColorB($origValue)));
}
}
if($surface->isa('SDL::Surface')) {
$$surface = $workingSurface;
} else {
$surface = $workingSurface;
}
}
croak "SDL::Tool::Graphic requires SDL_gfx support\n"
unless SDL::Config->has('SDL_gfx');
1;
__END__;
=pod
=head1 NAME
SDL::Tool::Graphic
=head1 DESCRIPTION
L<SDL::Tool::Graphic> is a module for zooming and rotating L<SDL::Surface> objects.
=head1 METHODS
=head2 zoom ( surface, xzoom, yzoom, smooth )
C<SDL::Tool::Graphic::zoom> scales a L<SDL::Surface> along the two axis independently.
=head2 rotoZoom ( surface, angle, zoom, smooth )
C<SDL::Tool::Graphic::rotoZoom> rotates and fixed axis zooms a L<SDL::Surface>.
=head2 grayScale ( surface )
C<SDL::Tool::Graphic::grayScale> rotates and fixed axis zooms a L<SDL::Surface>.
=head2 invertColor ( surface )
C<SDL::Tool::Graphic::invertColor> inverts the color of a <SDL::Surface>.
=head1 AUTHOR
Russell E. Valentine
=head1 SEE ALSO
L<perl> L<SDL::Surface>
=cut
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