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.

SEE ALSO

Clutter::Path, Clutter::Behaviour, Clutter::Alpha