1 files changed, 76 insertions, 0 deletions
diff --git a/src/MTools/Transform/MRotation.pm b/src/MTools/Transform/MRotation.pm
new file mode 100644
index 0000000..16b405a
--- /dev/null
+++ b/src/MTools/Transform/MRotation.pm
@@ -0,0 +1,76 @@
+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 -> 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 -> {__current_angle} = 0;
+	$self -> __rotate ($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;