William Chang

Highlighting some of my Git repositories or see all by visiting my GitHub. I have used many version control systems (VCS) and project hosting services, like SourceForge and CodePlex. The previous hosting service that I migrated from was Google Code, under the organization name I founded and started called Creative Crew (was known as, Developers Club) at University of Central Florida (UCF).

• PowerShell Scripts, MSBuild Scripts
• Cross-Domain Demonstration, Sharing Data Between Multiple Websites
• ASP.NET Core MVC Full-Stack App
• Java EE Full-Stack App
• ASP.NET Web Forms Full-Stack App
• WebSocket Demonstration, Multiplayer Game, Java EE
• Umbraco CMS Contrib
• Sitecore MVC Contrib

An enterprise system composed of many applications (eg sitecore, ecommerce, resellers), services (eg reservations, payments), and data (eg accounts, products, orders) all working together in unison. I started as a full-stack developer and then taking on many roles as a Sitecore Architect, IT Team Leader, and DevOps. For many years, I developed many enterprise applications for the company, implemented many features, and automated the infrastructure for the IT department. My colleagues recognized me as their production problem solver (digging through layers of code and data to find the cause) and their CMS expert for all Sitecore projects.

The following documents I created to enforce company standards and best practices:

• Sitecore - Organization and Structure for Multiple MVC Projects
• Sitecore - Development Requirements for New MVC Projects

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This project started in 2008 using two emerging technologies, ASP.NET MVC and NHibernate ORM (Object-Relational Mapping). I developed an innovative web application called "SubmittalCheck", a digital handshake or authorization service that guarantees that all submitted candidates have been informed regarding pertinent job details and have expressly authorized the presenting staffing vendor to represent their interest in pursuing each job position. The candidates are also empowered to authorize their resume submittals and validate their staffing agency relationship.

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The following JavaScript components and helper functions I created and reused to meet the needs of many web applications.

Demos and Documentations

• Collapsible Component
• Tabs Component
• Validation Highlighter Component for ASP.NET Web Forms

Source Codes

• Push Board Game (WebSocket, Java EE, Maven, SQLite, Apache Tomcat Embed)
• Collapsible Component (jQuery Plugin)
• Tabs Component (jQuery Plugin)
• Validation Highlighter Component (jQuery Plugin)
• Rich Text Editor On-demand Loader Component (TinyMCE)
• Image Gallery Component (jQuery Plugin)
• Helper Functions (Vanilla JavaScript)

A hobby project I created to learn about Single-Page Application (SPA), which is mostly moving the business logic layer to the client-side. All communications (HTTP, request and response protocols) to the database is by AJAX and JSON to the server-side, as a Web Service API (Application Program Interface).

Review My Source Code and Demo

A large project started in 2002 that I helped developed with a team. The first version of FINDER (Florida Integrated Network for Data Exchange and Retrieval) was installed in October 2003 connecting five law enforcement agencies in a federated peer-to-peer data sharing system and now has users from nearly every major law enforcement agency in the state of Florida. This application provides searching capability of hundreds of data sources and has provided a key role in solving hundreds of crimes.

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A "one person team" taking on a medium size project, I was assigned to rapidly develop a web application to manage tournaments (aka tournament management system). Everything was designed and architected by me, from the backend (SQL database schema and ASP.NET Web Forms) to the frontend (HTML, CSS, JavaScript). This application features user management, competition registration (events, teams, volunteers, judges), scoring, ranking, and surveying.

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Before any major web-based word processors emerged like Google Docs and Microsoft Word Online, this project I developed is a web application that allows users to collaborate and create documents. The sharing feature has ability to assign privileges to read, comment, and modify documents. The original vision for Knightverse came from the planning department of Charlotte County Florida. They were looking for a new way to produce web-based documents versus traditional ways for their operation.

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A web application that manages all aspects of determining the solid waste non-ad valorem assessment for all residentials and commercial properties based on different assessment types. This process is accomplished to provide the tax collector's office with solid waste non-ad valorem assessments that become part of the annual property tax bills.

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A proof-of-concept (POC) that I rapidly developed with the restaurant owner funding the project, it is to explore the possibility of a potential product or service to be successful. This web application features searching menu items in all restaurants, calling out favorites, and managing menus for restaurants.

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Before any popular content management systems (CMS) emerged for ASP.NET 2.0, I was assigned to develop a web application to empower professors to manage content and files easily. I architect the application for professors to privately control their own set of pages and blogs using a friendly rich text editor and to quickly attach files using AJAX.

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One of my hobby projects I do on my spare time. I created a console (CLI, command line interface) to quickly experiment features and a game using OpenGL ES 1.1 and Box2D physics engine for collision, bounce, and friction. This project is a prototype, by creating a simple application that explore the possibilities on Apple iPhone.

Review My Source Code

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One of my hobby projects I do on my spare time is creating a simple prototype application that explore the possibilities on Google Android. I created a console (CLI, command line interface) to quickly experiment features and a 2D graphics simulation by side scrolling a level using tiles. The tiles are cutouts from a single image for graphics performance and conserving memory. The tiles are used as building blocks to construct a seamless world.

Review My Source Code

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A large project started in June 2003 that I helped developed with the goal of analyzing government business process, providing recommendations for process improvement, and software development to support the process changes. Since then analysis and refinement of hundreds of processes has taken place along with the supporting software development saving Seminole County millions of dollars in efficiency improvements annually.

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A web application designed to streamline and improve the assessment process at University of Central Florida (UCF). It includes complex state-based workflow and implements some software advances such as non-programmatic interface control and automated video-based embedded training.

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A small project assigned to me to develop the front-end and the server-side code for the web forms. This NIJ funded project is a web application that searches an existing database of Y chromosome haplotypes.

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A collection of small hobby projects I created for exploring, experimenting, and prototyping Java on desktop using GUI Swing and on mobile using Windows Mobile. The projects use Eclipse IDE (Integrated Development Environment).

Download and Review Source Code Source Code

An old project started in 2004 for my organization called Creative Crew (was known as, Developers Club) at University of Central Florida (UCF). I developed a game engine called "Discovery" using OGRE, a object-oriented graphics rendering engine, seamlessly using OpenGL and DirectX on multiple operating systems: Microsoft Windows, Linux, and Apple Mac OS X. The following physics engines have been replaced multiple times because of operating system compatibility issues or licensing issues: Newton Game Dynamics, NVIDIA PhysX, and Bullet.

• Review Source Code
• Video of Early Development 1
• Video of Early Development 2
• Video of Level Created using Autodesk Maya
• Video of 3D Mouse Picker and Physics Demonstrations

A very old hobby project I done during my teenage years, I was a level designer (aka mapper) for a game mod called Weapons Factory Arena (WFA) for Quake 3 Arena (Q3). The level editor tool I used was QERadiant and later switched to GtkRadiant, with a better lightmap ".bsp" compiler called "ydnar Q3Map". I renamed the file types below from ".pk3" to ".zip" for your convenience. The ".pk3" file type is simply an archive file used by the Quake 3 engine. Unfortunately, the source maps were lost or misplaced.

Available for download: Gensurf, Classic Cancer, C-Bases

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