neon lines in processing using a glsl filter

Nikolaus Gradwohl2013-08-19T07:47:18+02:00

I made a short processing script that draws sine curves and uses a glsl blur filter to add a neon effect


To create this effect you need a processing sketch drawing the curves and a glsl filter that adds the blur effect.

read more ...

endless pattern generator

Nikolaus Gradwohl2013-08-12T06:20:38+02:00

Back in my Atari computing days I was fascinated by the endless pattern generators that generated never repeating complex patterns on my screen. This is a processing sketch that recreates this effect

click on the sketch to generate a new pattern



Nikolaus Gradwohl2013-07-19T06:16:10+02:00

I created a new small processing sketch, cause I had to wait for someone and there was nothing else todo - well at least nothing else that I would have liked to do or that would have fit into that timeslot. Somehow this blogpost starts to get far more complicated than I intended it to be ...

I think you should just click on the image and rotate the rectangles ...


Day 25 of 30daysOfCreativity - a processing noisestar

Nikolaus Gradwohl2013-06-25T23:12:05+02:00

My Day 25 project for is a processing sketch that draws a star using the noise() method

click on the sketch to start it or to download the sourcecode

noise star

processing archflower

Nikolaus Gradwohl2013-05-31T06:17:17+02:00

My latest processing sketch uses the arc command to create flowers. I use 20 arcs and control their angle with the x axis of the mouse. The arcs grow at different speeds and on random sides of the flower to create the petals.

Click on the sketch to create a new flower and move the mouse to let it bloom.


first box of Processing 2 Creative Coding Hotshot arrived

Nikolaus Gradwohl2013-05-28T06:49:32+02:00

Oh! Look what the mailman brought me yesterday!

The first box of PHYSICAL COPIES on PAPER of my very first book Processing 2: Creative Coding Hotshot arrived!

book arrived

Processing 2.0: Creative Coding Hotshot is published

Nikolaus Gradwohl2013-05-22T05:55:24+02:00

I hereby proudly announce that my first book has been published at packt publishing.

You can find the print and the ebook version of my book at

processing 2.0: Creative Coding Hotshot

read more ...

wobbly circles

Nikolaus Gradwohl2013-05-13T06:05:06+02:00

I wrote a new processing sketch that draws colored circles that are slightly off center

click on the sketch to create new forms.

wobbly circles

processing lissajou generator

Nikolaus Gradwohl2013-05-08T07:54:14+02:00

I wrote a processing lissajou form generator. I didnĀ“t use the usual connect the dots method but used two nested loops to connect every point to every other point. The line color, width and alpha is calculated from the distance of two points.

click on the sketch to create new forms.


processing ocean waves

Nikolaus Gradwohl2013-05-06T06:10:41+02:00

I created a processing sketch that simulates ocean waves using the noise() method Click on the sketch and move the mouse to rotate the view.

ocean waves