Michael Kang's Blog

With SK Telecom in South Korea, worked on this web site to teach English online through a game.
The running demo can be found here.

As a tech demo, built this 3D UI demo on a latest mobile 3D acceleration chip from Samsung. 3D Modeling and the scenario is made by “Digicube” and the code is all written in C and OpenGL ES.

Azitro3D

Established new “SKT GIGA Class 4 Standard” featuring 2D and 3D graphics, float/fixed point math, 3D sound, vibrations, motion sensors and external game controllers. This required collaborating with many hardware vendors and international organization. After establishing the standard, whole suites of the testing procedure and test application is provided to qualify the handsets

Collaborated closely with ATI and ported many features of ATI Imageon 238x chips. Implemented ATI API as a GIGA Extensions API. Ported “Rooms Demo” of ATI into SKT WIPI-GIGA platform and demonstrated in ATI PCI board.

http://ati.amd.com/products/imageon238x/IMAGEON_238X_Rooms_Demo_Whitepaper.pdf

In order to provide support to mobile 3D game developers, we provided the MSDN like web site called WIPI-Gem, many seminars about GIGA game platform and the mobile 3d game course in Game Academy

• http://www.gxg.com
• wipigem
• http://www.gamizi.com

Provided technical guidance to SKT in the international collaboration with standard organizations like Khronos groups, OMA (Open Mobile Alliance) Game Service group. Supported with technical analysis to the GxG service (SKT’s Premium mobile 3D game service).

Maintained Mobile 3D Game test application for demo and training purpose. WIPI-C and Giga is used and runs on OpenGL ES enabled mobile handset.

Provided Internet Cafe(PC Bang in Korea) management tools for Megamax francise.

To certify the Giga functionalities of the handsets, series of test applications that can test GIGA features. These tests became mandated as a test procedure before the release of the cellular phone.

Designed and implemented GxG Mobile 3D game launch and update system which is like mobile version of “steam”. Used Frism flash engine for UI and WIPI-network , authentication API for the contents update, payment and launching of game contents.

Designed and implemented the mVR framework for the SK Telecom. Implemented the PC based Shader Engine component of the framework with nVidia Cg and OpenGL. Shader performance analysis and tuning is conducted with nVidia’s FX Composer and Graphic Remedy’s gDebugger.

Developed the windows application that visualizes the 3D laser-scan LIDAR data in 3D. Made input module that can read the custom 3D scanner data and used Ogre3D engine and MFC to visualize the 3D data set.

Designed and implemented the simulation software that can calculate shadow area that caused by new buildings. Solar position calculation library from NASA is used and built a module that can read SHP 2D shaped data and generate 3D buildings Built on IBM AIX p690 super computer and used xlc_R compiler with OpenMP support.

Implemented script engine with boost python bind and created advanced avatar module featuring IK, motion blending by extending the features of provided Ogre3D engine

Designed and implemented the game component of VR based 3D Social Network, justleapin.com with Unity3D game engine. Lead 3 other game programmers and collaborated with art team and web team. Managed the team with Agile development method and setup the best practices and code standards. Also established and optimized the build process with Python and Perl and set up a subversion repository for C# and C++ code base. Details of the accomplishments are an organization of the source code structure and an implementation of avatar creation and avatar animation module, network and data transfer module, asset caching module and web debug module.

Patent: Interactive Commercial in Digital Broadcasting
 
I got a call that the BM patent while I was in the graduate school back in 2001 is now registered.
I came up with the main idea and the reason was that even though the broadcasting market is becoming digitalized, the pie of the market wouldn’t expand drastically and the potion has to be taken from the non-interactive area of the advertisement market The main idea is to make an interactive game and use it as an commercial.

Patent Number: 10-0593704
Patent Name: Interactive Commercial in Digital Broadcasting

Screen shot of the proram that simulate the crowd moving accroding to the CFD(Computation Fluid Dynamics). 

I have a friend woriking in motion graphics industry and he uses Combustion and has done several work in movies and TV series. He also wrote a book about Combustion last year and he asked me to write one chapter about scripting which I’m about to show you here.

Chapter 19. Particles with Combustion Script
In most cases with computer, we can get amazing results with a knowledge with math. I’d like to introduce these three curves out of “50 famous curves” and show how to make them into combustion script.

Astroid

Astriod is a curve connected with 4 arcs of circles. Depends on which coordinates you use the equation might look different but the eqaution for is like this:

Cartesian Equation



Parametric Equation





Parametric Equation is easy to turn into a computer program because as the variable t changes the reslut x(t) and y(t) and these results are easily deployed into the program

X channel

XCenter = 320.00;
Frequency = 0.30;
a = 100;

t = CB.GetCurrentFrame() * Frequency * Math.PI / 180;

// Astroid
a * Math.cos(t) * Math.cos(t) * Math.cos(t) + XCenter;

Y channel

YCenter = 240.00;
Frequency = 0.30;
a = 100;

t = CB.GetCurrentFrame() * Frequency * Math.PI / 180;

// Astroid
a * Math.sin(t) * Math.sin(t) * Math.sin(t) + YCenter;

Epicycloid

Hypocycloid

This is a star~~

Partner : KOPEC
Project Period : Aug 2004 ~ Nov 2004

Partner : Posco Construction, Seoul National University Space Analysis Lab, Midas IT
Project Period : Oct 2003  ~ June 2004

Partner: Korea Subway Coorporation
Project Period: Sep 2003 ~ Dec 2003

Partner : Korea Western Power, KOPEC, KOGAS
Youngheng / Taean Power Plant Management Program