Re: [clutter] append_knots() is missing from 'clutter.BehaviourPath' object

[Neil Roberts]

On Mon, 12 Apr 2010 00:23:41 +0200, Rune Svendsen runesv...@gmail.com wrote:

 I don't have much Python experience, and no clutter experience, but I
 simply don't understand why all the documents I read on
 clutter.BehaviourPath states it has several knot-functions
 (append_knots() etc.). But when I get to the second line in the
 following bit of the code:
 
 behavior = clutter.BehaviourPath(alpha)
 behavior.append_knots(actor.get_position())
 
 the following error is printed to the terminal:
 
 AttributeError: 'clutter.BehaviourPath' object has no attribute
 'append_knots'

The 'append_knots' function was in 0.8 but it was taken away in
1.0. ClutterBehaviourPath was mostly re-designed for 1.0 so that it
combined ClutterBehaviourBspline as well. ClutterBehaviourPath now
animates an actor along a separate object called a ClutterPath. Any
methods for modifying the path are now part of ClutterPath.

I think the equivalent of something like this line:

  behavior.append_knots(point)

would be

  behavior.path.add_line_to(point.x, point.y)

- Neil
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[clutter] append_knots() is missing from 'clutter.BehaviourPath' object

[Rune Svendsen]

Hi

I'm trying to get a plug-in called CoverFlow for the music called
Exaile to work.
The code can be downloaded here:
http://bazaar.launchpad.net/~guillaume86/exaile/context-dev/files/head%
3A/plugins/coverflow/
And a patch to update the code (which originally was written for
pyclutter-0.8) is available here:
http://paste.ideaslabs.com/download/XtHMz9qx7S

I don't have much Python experience, and no clutter experience, but I
simply don't understand why all the documents I read on
clutter.BehaviourPath states it has several knot-functions
(append_knots() etc.). But when I get to the second line in the
following bit of the code:

behavior = clutter.BehaviourPath(alpha)
behavior.append_knots(actor.get_position())

the following error is printed to the terminal:

AttributeError: 'clutter.BehaviourPath' object has no attribute
'append_knots'

How can this be? Every page I read states that the BehaviourPath object
_does_ have the append_knots()-function. Also, when I go to a Python
terminal and enter the following two lines of code:

import clutter
dir(clutter.BehaviourPath)

it doesn't print any knot-functions. Only the following is printed:

r...@runescomp:~/Desktop/coverflow$ python
Python 2.6.5 (r265:79063, Apr  3 2010, 01:57:29) 
[GCC 4.4.3] on linux2
Type help, copyright, credits or license for more
information.
 import clutter
 dir(clutter.BehaviourPath)
['__class__', '__cmp__', '__copy__', '__deepcopy__',
'__delattr__', '__dict__', '__doc__', '__format__', '__gdoc__',
'__getattribute__', '__gobject_init__', '__grefcount__',
'__gtype__', '__hash__', '__init__', '__module__', '__new__',
'__reduce__', '__reduce_ex__', '__repr__', '__setattr__',
'__sizeof__', '__str__', '__subclasshook__', 'actors_foreach',
'apply', 'chain', 'connect', 'connect_after', 'connect_object',
'connect_object_after', 'disconnect', 'disconnect_by_func',
'do_alpha_notify', 'emit', 'emit_stop_by_name', 'freeze_notify',
'get_actors', 'get_alpha', 'get_data', 'get_n_actors',
'get_nth_actor', 'get_path', 'get_properties', 'get_property',
'handler_block', 'handler_block_by_func', 'handler_disconnect',
'handler_is_connected', 'handler_unblock',
'handler_unblock_by_func', 'is_applied', 'notify', 'props',
'remove', 'remove_all', 'set_alpha', 'set_data', 'set_path',
'set_properties', 'set_property', 'stop_emission',
'thaw_notify', 'weak_ref']
 


I'm kind of stuck here, as I can't figure out what would cause this.

Can anyone help?

Thanks for your time! :)

/Rune

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