package MTools::Transform::MRotation; # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU LGPL Libray General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program 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 Library General Public License for more details. # # You should have received a copy of the GNU Library General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA, # or refer to http://www.gnu.org/copyleft/lgpl.html # ################################################################## use strict; use MTools; use MTools::MObjet; use vars qw /@ISA/; BEGIN { @ISA = qw /MTools::MObjet/; } use Tk; sub new { my ($class, $target, $angle, $x, $y) = @_; my $self = new MTools::MObjet (); bless $self, $class; if (!defined $x) {$x = 0;} if (!defined $y) {$y = 0;} if (!defined $angle) {$angle = 0;} $self -> {__current_angle} = 0; $self -> recordProperty ('-visible', 0); $self -> recordProperty ('target', $target); $self -> recordProperty ('angle', $angle); $self -> recordProperty ('x', $x); $self -> recordProperty ('y', $y); $self -> plisten ('-visible', sub { my ($src, $key, $val) = @_; if ($val == 0) { $self -> __rotate (0); } else { $self -> __rotate ($self -> mget ('angle')); } }); $self -> plisten ('angle', sub { my ($src, $key, $val) = @_; $self -> __rotate ($val); }); $self -> __rotate ($angle); return $self; } sub __rotate { my ($self, $angle) = @_; my $new_angle = $angle - $self -> {__current_angle}; $self -> {__current_angle} = $angle; my $target = $self -> mget ('target'); my $x = $self -> mget ('x'); my $y = $self -> mget ('y'); $target -> rotate ($new_angle, 1, $x, $y); } 1;