Issue with sending message to [line] object using JAVA
I need to send a message to line e.g 20 200
I.e I want line to increase to 20 and use 200 ms on the operation.
However the send method is per API defined like this:
send(int i) Send this box the "int" message.
send(java.lang.String message, Atom[] args) Send this box an arbitrary message.
The only option I can think of is to send to the second inlet of line but do anyone know if this is possible in java to route to a specific inlet?
MaxPatcher p = this.getParentPatcher();
MaxBox mb = p.getNamedBox("sn_line1");
mb.send(20); //This work but the change is immediate
its not possible to send array to the outlet ? or literal with commas like in JS ? mb.send(20,200) ?
you could reformulate your message as "list 20 200" (which is essentially the same as "20 200") and use the "send(java.lang.String message, Atom[] args)" method.
vb
Thanks for the suggestions. However I did not get it quite to work. In the example below the value changes but the change is immediate so I assume the second value(the ramp time) is ignored..
MaxPatcher p = this.getParentPatcher();
MaxBox mb = p.getNamedBox("sn_line1");
Atom[] outputAtom = new Atom[] {Atom.newAtom ("300 "),Atom.newAtom ("5000")};
//mb.send(10); //OK
mb.send("list",outputAtom);
Hi Kmill !
i never coded in java and max api but ...
i would try to ommit "list" message as it may be that send() function sends array as list by itself (but im just guessing) ... because line object expects 2 values inside list message so it get two aready -> "list 300" and 5000 is ignored . but yeah , im jsut guessing .
or try to format your atom array with 3 cells
Atom[] outputAtom = new Atom[] {Atom.newAtom ("list "),Atom.newAtom ("300 "),Atom.newAtom ("5000")};
First of all, a Java String is not a Max list. All Volker's suggestion will do is generate a symbol 'list 20 200' which is not, and never will be, a list (although inserting a [fromsymbol] object might give you some joy, but then you've got to go through Max patch cords--which, in and of itself, would probably be a Good Idea).
I've had Java objects create Max lists, so it can be done. It's been a while, but as I recall, the Java/Max interface simply converts Atom arrays in Java to lists in Max. So, change your last line to
mb.send(new Atom[] {Atom.newAtom(300), Atom.newAtom(5000)});
And leave out the quotation marks, otherwise you're going to generate symbol atoms when you want int atoms.
Actually, you could probably make life even easier for yourself by using an int[] instead of an Atom[].
This is, btw, all covered in the "Writing Max Externals In Java" document, pp.29-31.
The challenge is that I am bound by the API as described in my initial post. For that reasonmb.send(new Atom[] {Atom.newAtom(300), Atom.newAtom(5000)}); will not be a valid call. However I think I will use outlets instead of direct messaging to the [line] object as described in the “Writing Max Externals In Java” document.
MAX objects seem to be inconsistent with regards to the message format they receive and as far as I can see this is not reflected in the API. E.g the [play] object takes the style "start 300 500 200" (which is possible using the API) whilst the [line] object takes "200 5000" which is not possible using the API.
All Volker’s suggestion will do is generate a symbol ‘list 20 200′ which is not, and never will be, a list
maybe the quotes were misleading, but i really meant message when i wrote message, and not symbol. thought it would be clear from the context.
int args[] = {20, 200};
MaxPatcher p = this.getParentPatcher();
MaxBox mb = p.getNamedBox("sn_line1");
mb.send("list", Atom.newAtom(args));