[Fwd: Re: [PD] controlling jMax from the Web and from PureData]
Yves Degoyon
ydegoyon at free.fr
Thu Feb 13 11:57:46 CET 2003
ahah, it's been years we're making CGI's
that sends controls from web pages to
Pure Data.
( maybe you're not aware of this
as well as you don't know about subpatches
and say : Pure Data can't do this, blah, blah, blah, ... )
besides, i could never set GridFlow to work
and there's not a single help patch included
for pure data.... it's funny for someone who criticize
PD all the time ( yeah, i don't like too much your posts )
bye,
sevy/yves
Mathieu Bouchard wrote:
>controlling jMax from the Web and from PureData
>
>I created a new class "ruby_udpsend" that is an emulation of jMax's
>"udpsend". Which means you can send messages from PureData to jMax.
>
>I create an objectbox "ruby_udpsend localhost 2042" in PureData. Then I
>create an objectbox "udpreceive 2042" in jMax. Then messages i send to
>ruby_udpsend will be catched by jMax.
>
>If you have GridFlow 0.6.5 or 0.7.0 installed, you may add this
>functionality to PureData by adding those lines to your
>~/.gridflow_startup file :
>
>----------------8<--------cut-here--------8<----------------
>
>class RubyUDPSend < FObject
> def initialize(host,port)
> @socket = UDPSocket.new
> @host, at port = host.to_s,port.to_i
> end
> def encode(x)
> case x
> when Integer; "\x03" + [x].pack("N")
> when Float; "\x04" + [x].pack("g")
> when Symbol, String; "\x01" + x.to_s + "\x02"
> end
> end
> def method_missing(sel,*args)
> sel=sel.to_s.sub /^_\d_/, ""
> @socket.send encode(sel) +
> args.map{|arg| encode(arg) }.join("") + "\x0b",
> 0, @host, @port
> end
> install "ruby_udpsend", 1, 0
>end
>
>----------------8<--------cut-here--------8<----------------
>
>
>Furthermore, the above code can be combined with the following one to
>produce a CGI script capable of sending messages to jMax...
>
>----------------8<--------cut-here--------8<----------------
>
>#!/opt/bin/ruby
>
>ENV["HOME"]="/"
>STDERR.reopen "/dev/null", "w"
>require "cgi"
>require "gridflow"
>include GridFlow
>
>puts "Content-type: text/plain", "", "hello world!"
>message = CGI.new.params['message'][0]
>
># create the gridflow object
>s = RubyUDPSend.new "karelia", 2042
>
># convert values and send in inlet 0 of the gridflow object
>s.send_in 0, *(message.split(',').map {|atom|
> if atom =~ /^\d/ then
> if atom =~ /\.|E/i then Float(atom) else Integer(atom) end
> else
> atom.intern
> end
>})
>
>----------------8<--------cut-here--------8<----------------
>
>
>________________________________________________________________
>Mathieu Bouchard http://artengine.ca/matju
>
>
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