Cycling 74 » Topic: How can I use MessageReceiver interface/classe for listening attributes change ? http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/feed Wed, 19 Jun 2013 04:33:37 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-55975 <![CDATA[How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-55975 Sat, 02 Jun 2012 23:16:34 +0000 Julien Bayle Hi mates,

I’m looking for a way to listen some attributes changing.
Especially, I’d like to track some objects OB3D position in space and some will move on their own.

instead of polling them every time or to make them sending their position every time (which is similar to permanent polling), can I use MessageReceiver ?

Or should I implement one MXJ with one jitterListener in each object ?

The real question is, what would be the most efficient way

thanks a lot for your help

]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201113 <![CDATA[Re: How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201113 Wed, 06 Jun 2012 09:09:41 +0000 Julien Bayle did someone try this already?

]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201114 <![CDATA[Re: How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201114 Wed, 13 Jun 2012 10:16:54 +0000 Emmanuel Jourdan It’s not possible to do that from Java. There’s a specific kind of notification that you can listen to, in C though.

]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201115 <![CDATA[Re: How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201115 Wed, 13 Jun 2012 18:16:57 +0000 Rob Ramirez at least in javascript, you can get a notification message when attributes of an object are changed (something like attr_modified) however it doesn’t give you any info about which attr.

]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201116 <![CDATA[Re: How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201116 Wed, 13 Jun 2012 18:19:33 +0000 Julien Bayle I got it.
requesting values by using (getXXXXX) messages triggered by the global qmetro can do that.
I guess it is another design pattern I can use

]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201117 <![CDATA[Re: How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201117 Wed, 13 Jun 2012 18:34:36 +0000 Jesse If you use pattr and pattrstorage you can use the latter to provide notifications. I believe you would need to set pattrstorage’s @outputmode attribute properly for this to work.

If I remember correctly, pattrtorage does not interrogate a jitter object’s internal attributes, so you’d have to set up various GUI objects (i.e. int or float number boxes) to feed messages appropriately, and then track those GUI objects using pattr. But since you’re driving much of this from a Java core this should not be hard to place into the patcher flow.

]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201118 <![CDATA[Re: How can I use MessageReceiver interface/classe for listening attributes change ?]]> http://cycling74.com/forums/topic/how-can-i-use-messagereceiver-interfaceclasse-for-listening-attributes-change/#post-201118 Wed, 13 Jun 2012 19:08:27 +0000 Julien Bayle Jesse, I needed that because in my design, I thought I’ll “observe” parameters/attributes.
finally, I’m now using global matrices and requesting my params from them (on events or scheduled)

]]>