Experimental Physics and
Industrial Control System

Pete Jemian <[email protected]> · Thu, 15 Dec 2016 09:05:50 -0600

Wow!  Easy interface to construct a truly active GUI.

Here is an example from the processing site that should people an idea

of what can be done. It's just a bunch of colored balls bouncing around.

  https://processing.org/examples/sinecosine.html

Imagine, for example, that this script might be refactored into a

picture of an X-ray beam incident on a sample, including a rectangle

where width and height are taken from EPICS PVs. Or a 2-D detector

image is portrayed on screen and the user selects a region of interest

to be saved or a point to be moved to the center of the image or a box

to be raster scanned or a sequence of coordinates could be selected for

additional scans...

It's another scriptable GUI.

Pete

On 12/15/2016 05:06 AM, Noboru Yamamoto wrote:

Hello, this is Noboru Yamamoto from J-PARC/KEK, JAPAN.

I just want report a small software experiment.

I tested possibility of using EPICS channel access in "Processing"
environment.
I found that it is possible to access EPICS data through channel access
protcol in "Processing".

First of all, you may not know what "Processing" is.
According to the web page, https://processing.org/,
"Processing" is
"a flexible software sketchbook and a language for learning how to code
within the context of the visual arts. Since 2001, Processing has
promoted software literacy within the visual arts and visual literacy
within technology. There are tens of thousands of students, artists,
designers, researchers, and hobbyists who use Processing for learning
and prototyping. "

Processing IDE is written in Java.  Processing supports few flavours of
languages, such as Java, Python and javascript.
When you use Java flavour Processing language, it is possible to use
your java library in
the processing sketch as plug-in.
I took jca/caj jar files and create some fiels/folders to use them as a
plugin in  Processing.

Then processing sketch can read( I didn't test write yet) data from
EPICS database through CA (an example processing sketch is attached).

It is just resut of a few days of  fiddling codes. If you have any
interest, please let me know.

Thank you for your attension.

KEK
Accelerator Lab.

Noboru Yamaoto

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System