Clutter::Behaviour::Path(3pm)
NAME
Clutter::Behaviour::Path - A behaviour for moving actors along a
Clutter::Path
SYNOPSIS
my $path = Clutter::Path->new('M 10,10 C 20,20 20,20 10,30 z');
my $behaviour = Clutter::Behaviour::Path->new($alpha, $path);
$behaviour->apply($rectangle);
DESCRIPTION
Clutter::Behaviour::Path interpolates actors along a defined path.
A path is described by a Clutter::Path object. The path can contain
straight line parts and bezier curves. If the path contains 'move-to'
nodes then the actors will jump to those coordinates. This can be used
make disjoint paths.
- When creating a path behaviour in a Clutter::Script, you can specify
the path property directly as a string. For example: - {
"id" : "spline-path",
"type" : "ClutterBehaviourPath",
"path" : "M 50 50 L 100 100",
"alpha" : {"timeline" : "main-timeline",
"function" : "ramp} - }
- Note: If the alpha function is a periodic function, i.e. it returns to 0 after reaching the maximum alpha value, then the actors will walk the path backwards to the starting node.
HIERARCHY
- Glib::Object
+----Clutter::Behaviour - +----Clutter::Behaviour::Path
INTERFACES
Glib::Object::_Unregistered::ClutterScriptable
METHODS
- behaviour = Clutter::Behaviour::Path->new ($alpha=undef, $path=undef)
- o $alpha (Clutter::Alpha or undef)
- o $path (Clutter::Path or undef)
- path = $behaviour->get_path $behaviour->set_path ($path)
- o $path (Clutter::Path or undef)
PROPERTIES
- 'path' (Clutter::Path : readable / writable / private)
- The ClutterPath object representing the path to animate along
SIGNALS
knot-reached (Clutter::Behaviour::Path, Glib::UInt)
SEE ALSO
Clutter::Path, Clutter::Behaviour, Clutter::Alpha
COPYRIGHT
Copyright (C) 2006, 2007, 2008 OpenedHand Ltd
Copyright (C) 2009 Intel Corporation
This module is free software; you can redistribute it and/or modify it
under the terms of either:
o the GNU Lesser General Public Library version 2.1; or
o the Artistic License, version 2.0.
- See Clutter for the full copyright notice.