# processing

## another gravity picture

Fri, 2013-05-10 23:26

Another "gravity" image: particles begin in a circle and then move according to specified rules.

Click for bigger on Flickr.

## gravity images

Sat, 2013-04-27 13:13

Made some more of these "gravity" images.

There's a whole set of them here.

## continuous automata - conditional - G

Sat, 2013-04-13 09:38

Another 2D continuous automata video.

Each pixel has a value between 0 and 1. At each iteration, each pixel's value is replaced by a value given by a function of the values of the 8 adjacent pixels, sorted so that the result is non-directional.

Click to embiggen on Vimeo.

## distance function video: Lp distance, variable p, minimal difference from ordered set of distances

Mon, 2013-04-01 22:32

10 particles move linearly at constant, random speeds, bouncing off the frame edges. For each pixel, calculate the Lp distance from the pixel to each particle, where p varies smoothly and monotonically from 1 at the start of the video to 10 at the end. Order this set of distances: d0, d1, d2, ... . Calculate the differences d1-d0, d2-d1, etc. Color the pixel a gray which is an increasing function of the smallest difference.

Click to embiggen.

## distance function: L1 distance, difference of the differences between two smallest pairs of distances

Sun, 2013-03-31 19:29

180 particles move linearly at various constant speeds, in randomly chosen directions. For each pixel, determine the set of distances from the pixel to each particle. Sort this set: say the result is d0,d1,d2,... in order. Then let k=(d2-d1)-(d1-d0). Color the pixel based on an increasing function of k.

Click through for bigger on Vimeo.

## distance function video - minimum distance greater than sum of smallest two distances

Sun, 2013-03-31 19:25

New distance function video.

Thirty particles move linearly at various constant speeds, in randomly chosen directions. For each pixel, determine the set of distances from the pixel to each particle. Sort this set. Find the smallest distance in that set which is greater than the sum of the two smallest distances. Color the pixel a grey color determined by a non-decreasing function of distance.

Made with Processing ( processing.org ).

Click through to embiggen.

## quasi-random walks

Sun, 2013-03-10 13:18

A series of quasi-random walks from the center of the frame. Each step of each walk is a sinusoidal function of time.

Click through for much bigger on Vimeo.

## eigenvideo 1

Sun, 2013-01-20 23:04

A video of eigenvalues of a 200x200 real matrix with entries defined by functions of time.

Click through for much bigger on Vimeo.

## still more cellular automata

Tue, 2013-01-15 13:09

More cellular automata. This time using a non-linear function of the pixels, implemented as a couple conditional statements in the code.

Click through to embiggen on Flickr.

## exploded image 1

Sun, 2012-12-16 22:48

A way of enlarging an image. Made with processing.

Click through and see the details in the largest version on Flickr.