[PD-dev] New externals

[Hans-Christoph Steiner]

Hey Brian,

Welcome, glad to see more libraries being produced. One thing that  
should make your life a lot easier is using the library template.  It  
handles building on GNU/Linux, all Debian flavors (kFreeBSD, etc), Mac  
OS X Universal, Windows/MinGW and Windows/Cygwin.  iOS and Android are  
also supported, though much less tested.  Provided you write your  
objects to be one class per .c file, its really easy to use.  Here are  
the docs:

http://puredata.info/docs/developer/LibraryTemplate

It also provides an easy path for packaging your library for Debian.

.hc

On May 29, 2011, at 3:20 PM, Brian Neltner wrote:

> Dear Puredata folks,
>
> I have a new external that does HSI (hue, saturation, intensity) to  
> RGB
> conversion. There is already an existing HSV2RGB function, but HSI  
> is a
> more sensible color space for LED lighting (which is what I use my
> external for).
>
> I don't want to get involved in the PureData development community
> really, given the numerous current demands on my time. However, I  
> think
> that others may want this external so I was wondering if there is a
> simple way to upload it. As is, you just run the makefile using gcc on
> either a mac or linux to produce the external.
>
> I don't know how to use windows, but I imagine someone could figure  
> out
> how to modify the makefile to target the platform if they wanted.
>
> I also included a usage patch showing how I use it to control LED
> lighting over OSC through a MIDI controller. Sorry if it's a bit  
> messy,
> I grew up on Max/MSP where we just wire everything and then hide  
> them. I
> didn't realize that hiding in PD is done with some kind of window  
> and so
> I didn't do things like send and receive. Should work though.
>
> I'd also be curious if anyone knows of a datarate limiting object for
> messages. Right now, I'm using buddy along with a metronome to
> accomplish the task (pretty straightforward), but it seems like a task
> that other people might be interested in -- for instance in cases  
> where
> events are overwhelming the CPU and there is a desire to limit the  
> rate
> of messages when the CPU is being overutilized. In my patch, I use  
> it to
> limit the maximum datarate physically being sent out over UDP to my  
> wifi
> lights because too high of datarates result in lags at the 802.11b
> level.
>
> The other object that I found was strangely missing was the ability to
> do powers or logarithms inside of an expr. Probably been brought up
> before, but I wanted to do logarithmic scaling of a dial output to
> control the speed of hue rotation of lighting. I ended up doing it  
> with
> an any mode sync, pow, and an expr on the exponent but it was messy  
> and
> perhaps tricky for someone with less experience to figure out how to  
> do.
>
> Best,
> Brian Neltner
> < 
> hsi2rgb 
> .zip 
> > 
> < 
> hsi2rgb 
> .pd_darwin 
> > 
> < 
> hsi2rgb 
> .pd_linux 
> ><directosc.pd>_______________________________________________
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