man Clutter::Behaviour::Path (3): 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)

$alpha (Clutter::Alpha or undef)
$path (Clutter::Path or undef)

path = $behaviour->get_path

$behaviour->set_path ($path)

$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)

COPYRIGHT

This module is free software; you can redistribute it and/or modify it under the terms of either:

the GNU Lesser General Public Library version 2.1; or
the Artistic License, version 2.0.