Hello all,

I'm currently starting my first project with OF. I've been working with actionscript a lot and miss a convenient tweening tool in OF. I've seen there has been an attempt to create a tweener, but I think one could do better. I was thinking of looking at some of the ideas that the Tweenlite library for AS3 offers. A call to the tweener could look something like this:

ofxTweener::to ( [tms time in ms], [ptw pointer to tweening function], [pf pointer to float], [f float] );

This call would tween the float which the pointer pf is pointing to to the new value the float f defines in tms milliseconds using the ptw tweening function. I guess one would have to call an update function in the ofxTweener class from the main update routine so that the tweener could work this way.

I've been reading about an event system to be integrated into of sometime soon, I think that would probably work really well together with my proposed ofxTweener.

My actual question is, would anybody apreciate me putting work into the ofxTweener class, and does my proposed functionality make sense to everyone?

Thanks,

Dave

sure ! sounds useful and it makes sense... Have you seen this tweening code:

http://code.google.com/p/cppglue

from erik sjodin ? it might be just what you are asking about or a good starting point:

http://code.google.com/p/cppglue/source ... on/Tween.h

- z

Hope I'm not to late

I second this... it would be really nice to have a simple tweening library similar to how AS3 has Tweener or Tweenlite. However to work similar to Flash using the poco events in 0.0.6 would be best to target the specific object, Also ofxInteractiveObject might be a good library to look at.

Some functions Tweenlite has build in would be really useful such as function proxies and delayed function calls etc.

Hey

sometime ago i adapted erik's code to be more openframeworks style, you can download it here:

http://65.111.166.199/openframeworks/ofxTween.zip

but i think it has some events in it based in the event system in 5.7xx so i'll try to change it to make it more 006. but if you want to take a look...

Hey arturo,

I was wondering if you changed the event system to 006?

Thank you

yes, indeed i've been working with it lately, has made it also easier to use but need to polish it a bit and put an example. will upload tomorrow.

sorry arturo for bothering again, but I would love to use the tweener addon for a multitouch project for university right now and it's pretty urgant in terms of time so I was wondering if you are done with it or could upload the unpolished version

thank you very much!

oh sorry! totally forgot... going to pack it and upload.

EDIT: there it is

hi arturo, great work! oF rules again!!

Maybe you can upload your addon to google code?

Hey Arturo

I'm trying to build in codeblocks windows and i get the following build errors:



seems it doesn't like uint

hey

yes uint is a typedef or something like that, that doesn't exist in windows. just substitute all of them with unsigned. will change it and re-upload as soon as i have time.

do you mean instead of
uint getDuration();

do
unsigned in getDuration();

?

yes, instead of:

uint getDuration();

unsigned getDuration();

unsigned is actually the same as unsigned int.

Hey arturo,

Thanks a lot for this class
coming from a Flash background I'm going to find it very useful

cheers,

Sam

Hi Arturo,

I'm currently using ofxTween. It's really helpful.
I had some problems using it, but I found a simple solution.

I think that the boolean 'running' should be initialized at false in the constructor of the class ofxTween.



Hugues.