Quadratic Bezier curve control point calculation demo

MacGile made a video to demonstrate the calculation of control points of a quadratic Bezier curve. The algorithm is based on what I wrote here.

That looks awesome! Thanks MacGile!

Trying To Fly

This was a demo I wrote way back in 2004. It runs against the .NET Framework (version 1.1 back then). Wow, it’s been a while…

In the demo, I tell a story of a wooden cuckoo bird trying to fly. All the shapes were rendered using primitives such as spheres, cuboids and 2D planes. Textures were generated using a 3D renderer (Bryce 4). The sounds were downloaded from 3D Cafe, and were listed on the “free” page. While I can’t remember the exact licensing (which wasn’t a big deal back in 2004), I went to the Wayback Machine and checked. There were no licensing terms, either to credit the individual or 3D Cafe.

You can download the demo here.

I wrote a 3D engine called Visionary for my own purposes, which was used to render the demo. It generates 3D primitives (spheres, planes, cuboids) with or without texture mapping. The engine also had support to play sound and music. And I lost the source code to it. The DLL is Visionary.dll, so if you have a good .NET decompiler, I give you permission to use it. I’d appreciate it if you could also send me a copy.

Note that some of the sounds will be loud. Take care of your ears. I tried to edit the sound files, but apparently they were so old that I can’t edit them with Audacity. I can only play them. Maybe I missed something…

Teresa Deak, PicsieChick

In the September 2011 issue of my magazine, I had an interview with Teresa Deak, a photographer who likes to take macro shots. I also have some photos of my visit to the Asian Civilisations Museum that’s exclusive to the magazine. So go download it now.

The demo mentioned in the video is 74293945 by T-Rex.

Dream Equations

I’ve finally found the physics demo!

The demo was written by Maciej Matyka aka MAQ. There are Newtonian physics, partial differentials of wave equations, cellular automata and cloth simulations involved.

It’s also where I learned of t.A.T.u. the Russian singers and their song Nas Ne Dogonjat. I sang a little of this song here.

Here’s a sequel (of sorts) to the first Dream Equation:

Featured demo – dopplerdefekt

Today’s featured demo is dopplerdefekt (video link) by farbrausch. It’s about 47.8 KB and 3 minutes in length. (download page at Pouet)

The demo’s prominent feature is the 3D effect; you need 3D glasses to watch it. The technique is called stereoscopy.

The entire demo has two copies of every object, one for each eye (or colour). With the help of 3D glasses, you’ll see objects popping out. Which reminds me, I’ve got to go get one of ’em 3D glasses.

Enjoy the demo!