Re: libseed-list Clutter.Animator.set_key - g_value_set_float: assertion `G_VALUE_HOLDS_FLOAT (value)' failed

[tomw <tomw ubilix com>]

thanks, that helps a lot.

just to make sure I understand it correctly - you are calling the
g_value_init() method with the GType and the uninitialized value, right?

best, tomw

On Sat, 2010-12-11 at 23:23 +0800, Alan Knowles wrote:
> try using this as the constructor for the gvalue.
> new GObject.Value([ imports.gi.GObject.TYPE_FLOAT, 200 ])
> 
> eg.
> 
>  animator.set_key(rec, "x", 2, a,  new GObject.Value([ imports.gi.GObject.TYPE_FLOAT, 200 ]));
>  animator.set_key(rec, "x", 2, b, new GObject.Value( [ imports.gi.GObject.TYPE_FLOAT, 300 ]));
> 
> Regards
> Alan
> 
>  --- On 10/Dec/2010, Alan Knowles wrote: 
> > Ok - I'll have to have a play over the weekend and see what's happening.
> > 
> > Regards
> > Alan
> > 
> >  --- On 10/Dec/2010, tomw wrote: 
> > > thanks for your swift reply. 
> > > 
> > > On Fri, 2010-12-10 at 16:24 +0800, Alan Knowles wrote:
> > > > Try this..
> > > > 
> > > > var start_value = new GObject.Value(imports.gi.GObject.TYPE_FLOAT);
> > > > var end_value = new GObject.Value(imports.gi.GObject.TYPE_FLOAT);
> > > > 
> > > > start_value.set_float(200);
> > > > end_value.set_float( 300);
> > > 
> > > does not change anything, same errors
> > > > 
> > > > in your version, the start_value was set to a Javascript number, which gets converted to a DOUBLE type 
> > > > 
> > > > otherwise you could do:
> > > > 
> > > > animator.set_key(rec, "x", 2, a, [ imports.gi.GObject.TYPE_FLOAT,  start_value]);
> > > > animator.set_key(rec, "x", 2, b,  [ imports.gi.GObject.TYPE_FLOAT,  end_value] );
> > > 
> > > gives:
> > > 
> > > (seed:2938): GLib-GObject-CRITICAL **: g_value_set_float: assertion
> > > `G_VALUE_HOLDS_FLOAT (value)' failed
> > > 
> > > (seed:2938): GLib-GObject-CRITICAL **: g_value_set_float: assertion
> > > `G_VALUE_HOLDS_FLOAT (value)' failed
> > > 
> > > ** (seed:2938): WARNING **: ArgumentError - probably due to incorrect
> > > gir file (which may be fixed upstream) argument 5 must not be null for
> > > function: Animator.set_key 
> > > 
> > > 
> > > > 
> > > > Regards
> > > > Alan
> > > > 
> > > >  --- On 10/Dec/2010, tomw wrote: 
> > > > > Hi, 
> > > > > 
> > > > > trying to pass the variable to a Clutter.Animator.set_key method I'm
> > > > > getting the following error messages:
> > > > > 
> > > > > (seed:2219): GLib-GObject-CRITICAL **: g_value_set_float: assertion
> > > > > `G_VALUE_HOLDS_FLOAT (value)' failed
> > > > > 
> > > > > (seed:2219): Clutter-CRITICAL **: clutter_interval_set_initial_value:
> > > > > assertion `G_VALUE_TYPE (value) == priv->value_type' failed
> > > > > 
> > > > > from my limited knowledge it seems that the values are not properly
> > > > > passed to the method
> > > > > 
> > > > > Any idea how to fix this?
> > > > > 
> > > > > br, tomw
> > > > > 
> > > > > 
> > > > > 
> > > > > the code is as follows:
> > > > > 
> > > > > #!/usr/bin/env seed
> > > > > 
> > > > > const Clutter 	= imports.gi.Clutter;
> > > > > const GObject   = imports.gi.GObject;
> > > > > 
> > > > > Clutter.init(Seed.argv);
> > > > > 
> > > > > 
> > > > > var stage = Clutter.Stage.get_default ();
> > > > > 
> > > > > stage.set_size(640, 480);
> > > > > 
> > > > > var rec = new Clutter.Rectangle();
> > > > > var col = new Clutter.Color();
> > > > > col.from_string("light blue");
> > > > > rec.set_color(col);
> > > > > rec.set_anchor_point_from_gravity(Clutter.Gravity.CENTER);
> > > > > rec.set_size(100,100);
> > > > > 
> > > > > 
> > > > > var start_value = new GObject.Value(imports.gi.GObject.TYPE_FLOAT);
> > > > > var end_value = new GObject.Value(imports.gi.GObject.TYPE_FLOAT);
> > > > > 
> > > > > start_value = 200;
> > > > > end_value = 300;
> > > > > a = 0.5;
> > > > > b = 0.8;
> > > > > 
> > > > > var animator = new Clutter.Animator();
> > > > > var tl = new Clutter.Timeline({duration: 10000});
> > > > > 
> > > > > animator.set_timeline(tl);
> > > > > animator.set_duration(3000);
> > > > > animator.set_key(rec, "x", 2, a, start_value);
> > > > > animator.set_key(rec, "x", 2, b, end_value);
> > > > > 
> > > > > 
> > > > > stage.add_actor(rec);
> > > > > stage.show();
> > > > > animator.start();
> > > > > 
> > > > > Clutter.main();
> > > > > 
> > > > > stage.destroy();
> > > > > 
> > > > >  
> > > > > 
> > > > > _______________________________________________
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> > > > > libseed-list gnome org
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> > > > 
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> > 
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