GuruBlog

i worte a little tunnel effect using the copy command and a transparent rectangle in processing. i use no perlin noise in this sketch, just a plain random and copy command that scales the image and a transparent rect, to make the older pixel fade out. (don't ask me why it has to be 19 pixel less then width, but when i use 20 it gets dragged to the lower right corner)

copy(10, 10, width-19, height-19,0,0,width, height ); 
fill(0,10);
rect(0,0,width, height );

click here to see it in action

on saturday the 2.May i was invited as a speaker to the second Osliper Computer-Workshop-Day. This time the workshop was about processing and arduino. read the summary by Franz on his blog (in German), to see some of the examples we made.

like the first OCWD (which was about python, django and pylons) it was really a whole lot of fun, and i'm looking forward to the next ones

I worte a little skyline generator in processing.

click here to generate your own. Press any key to recreate the skyline if you don't like it

I wrote a processing sketch to show how to access a wms service for showing a map. i use geoserver as a wms provider and the map shown in the screenshots is from http://thematicmapping.org/.

the map can be dragged with the mouse and zoomed with the scroll wheel

no system or programming language should be without it's 2 minute timer for all those GTD followers out there. so i made one in mobile.processing.

the programm starts a 120 sec countdown and sends the app in background. After 2 minutes the vibration alarm is activated for 1 second.

i made a qr-barcode that contains the link to the jad file. just point a qrcode reader like zxing to it and install it

you can also use the direct link http://www.local-guru.net/mobileprocessing/twominutetimer/midlet/twominutetimer.jad (but i think it is a bit complicated to enter on a mobile phone)

a while ago i made an abstract art generator in processing. Now i made another one, drawing lines

click here to generate some images.

<typo:lightbox src="/img/guru/lines1.png" thumbsrc="/img/guru/icon-lines1.png"/> <typo:lightbox src="/img/guru/lines2.png" thumbsrc="/img/guru/icon-lines2.png"/>

for my monstergallery and my pencil drawings i needed a tool that generates the preview icons for me. so i made a gimp script that can be run in batchmode.

The following scheme script defines a function named imagescale which takes a file pattern (like '' or '.png') and a width as paramter. the function iterates over the file list, opens each file fetches the original width and height and calculates the new image height so that the image proportions are preserved. than the image is scaled and saved as a new file by adding "icon-" as a prefix to the filename.

the function can be called in gimp batch mode with the following command

gimp -b '(imagescale "*" 100)' -b '(gimp-quit 0)'

put the script in your ~/.gimp-2.6/scripts folder

(define (imagescale pattern width)
  (let* ((filelist (cadr (file-glob pattern 1))))
    (while (not (null? filelist))
           (let* ((filename (car filelist))
                  (image (car (gimp-file-load RUN-NONINTERACTIVE filename filename)))
                  (drawable (car (gimp-image-get-active-layer image)))
                  (original-w (car (gimp-image-width image )))
                  (original-h (car (gimp-image-height image )))
                  (height (* original-h ( / width original-w ))) )
             (gimp-image-scale image width height)
             (gimp-file-save RUN-NONINTERACTIVE image drawable 
                (string-append "icon-" filename) (string-append "icon-" filename))
             (gimp-image-delete image))
           (set! filelist (cdr filelist)))))

Computer are very well suited for boring and repetitive work. I can't imagine anything more repetetive and boring than counting sheep. so i made a processing sketch that does it for me.

click here if you want to let your computer count some sheep for you.

of course the sheep counter is a long int

I also made another gallery showing some pencil drawings i made.