kynd.info/log

Trapped in addView

admin — Sat, 14 Aug 2010 16:17:06 +0000

Mistakenly adding the same object twice crashes the program and Android forth-closes it. Took one hour to solve, sigh…

btnWrite = new Button(this); ... layout.addView(btnWrite);
btnRead = new Button(this); ... layout.addView(btnWrite);

Verlet Structure

admin — Sat, 31 Jul 2010 19:20:46 +0000

A simple demonstration of Verlet structure based on AdvancED ActionScript 3.0 Animation by Keith Peters

Math and (Quasi) Physics in Action Script 3 – Verlet Structure

Verlet integration is a numerical method used to integrate Newton’s equations of motion. It is frequently used to calculate trajectories of particles in molecular dynamics simulations and video games. The verlet integrator offers greater stability than the much simpler Euler method, as well as other properties that are important in physical systems such as time-reversibility and area preserving properties.

Verlet integration – Wikipedia

wonderfl post – liquid

admin — Sat, 31 Jul 2010 16:15:45 +0000

A liquid-like effect based on quasi-metaball.

liquid – wonderfl build flash online

Geotag APIs 2

admin — Wed, 28 Jul 2010 03:24:23 +0000

The next step is to dynamically put the photos on the map. I found googlemap API v3 is quite handy and could mock it up in a few hours.
The application can be run also on iPhone and Android phones and automatically locate your current place if the phone support the function.

Photomap

Many photos are taken right on the Bay Bridge, interesting.
Photomap – San Francisco!

Geotag APIs

admin — Tue, 27 Jul 2010 05:40:09 +0000

In preparation for the next project, I’m playing around with geotag related APIs.
The first sample I made is a combination of Googlemap and Flickr that shows the photos taken around the place where you click.
It’s interesting to see that there is a considerable variation in numbers of photos taken by location.

In another experiment, I laid out the images from Flickr onto the maps according to their locations.
Again, the numbers of photos available totally depends on the location. So many pictures are overlapped and hidden around the popular places like Ginza, while there are many places with no pictures.
If much more images are placed on a bigger map, like on a A0 print, it will give a great overview of a city.
Clicking on a image shows it in full size (1350 x 1350px).

HSV kernel

admin — Sun, 09 May 2010 13:03:39 +0000

The HSV kernel has been added to PixelBender Kernel Tester, which controls the colors of pixels based on the HSV model.

PixelBender Kernel Tester

Color Palette Creator – AIR

admin — Wed, 05 May 2010 10:29:40 +0000

I made the color palette creator into an AIR application. The image sources can be directly dragged and dropped onto the application and the generated palettes can be saved on the desktop.
To run the application, Adobe AIR needs to be installed beforehand.

Color Palette Creator

Below are examples of the color palettes from the historical masterpieces.

Claude Monet

Paul Gauguin

Pierre-Auguste Renoir

Roy Lichtenstein

Julian Opie

Mark Rothko

Robert Capa

Yves Klein

Color palette / Master pieces

admin — Mon, 03 May 2010 09:48:38 +0000

Color palette creator

HTML5 – canvas

admin — Mon, 03 May 2010 06:56:26 +0000

As html5 and canvas are getting much interest lately, I’ve tested the very basic functions of canvas even if a little belated.
The performance and results of the samples depends on the spec of the browser. So try them on the latest versions if possible, though most of them works even on the Internet Explorer which originally didn’t support canvas(thanks to excanvas).

html5-canvas

Timescan

admin — Fri, 30 Apr 2010 13:24:55 +0000

Timescan – wonderfl build flash online

This is a recreation of a device in Miraikan, Odaiba. It takes a single column of pixels per video frame and uses them to create a constantly changing image.