FishIE Tank. Fish 1024 x 1002 window size Thanks for checking out this site. This demo uses the canvas element to draw fish swimming in a fish tank. The FPS count tells you how many frames per second the browser is able to draw. Features. 2013. Aug. 08. (Thursday), 22:05, by dualonDocumentation, Website, RT 4.0 For a complete and up-to-date list of features, see the RawPedia Features page. Virtual Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION Slide Rule. Simulated Pickett N909-ES Slide Rule [Instruction Sheet (jpg)][Explanation][Gallery Index][back to AntiQuark] [Copyright © 2005 Derek Ross]
True-Color GIF Example. The three images to the left demonstrate the difference between a spectrum of 32697 colors and the same spectrum reduced by quantization to only 256 colors. All three images are in GIF format. All three conform to the GIF89A format specification as published by Compuserve. The big difference is that the ANGIF library was used to generate the true color GIF directly from the data buffer in the program that created the spectrum of colors in the 217 x 217 pixel image. The mistaken belief that GIF has a limit of 256 colors probably comes from the way GIF was first used when it came out.
In the late 1980's, PC video cards generally supported no more than 256 colors. Image exchanges were becoming popular among BBS systems and the Internet and viewer programs were quickly produced. The more colors a picture has, the larger the GIF file will be. J-Walk Blog. Canvas Cycle: True 8-bit Color Cycling with HTML5. GigaPan. Jet Propulsion. I’ve grudgingly included this section by popular request. Rocket and turbojet engines are fabulous technological achievements—but they’re so simple that the animations are boring! At least I think so. You be the judge! Rocket The rocket engine is the simplest of this family, so we’ll start there. In order to work in outer space, rocket engines must carry their own supply of oxygen as well as fuel.
To test this principle yourself, inflate a toy balloon and release it without tying it off…rocket propulsion at its simplest. Turbojet The turbojet employs the same principle as the rocket, except that it burns oxygen from the atmosphere instead of carrying its own supply. Notice the similarities: Fuel continuously burns inside a combustion chamber just like the rocket. Now the differences: On its way out the nozzle, some of the gas pressure is used to drive a turbine.
At the front of the engine, the turbine shaft drives a compressor. Turboprop Turbofan. Image evolution. What is this? A simulated annealing like optimization algorithm, a reimplementation of Roger Alsing's excellent idea. The goal is to get an image represented as a collection of overlapping polygons of various colors and transparencies.
We start from random 50 polygons that are invisible. In each optimization step we randomly modify one parameter (like color components or polygon vertices) and check whether such new variant looks more like the original image. If it is, we keep it, and continue to mutate this one instead. Fitness is a sum of pixel-by-pixel differences from the original image. This implementation is based on Roger Alsing's description, though not on his code. How does it look after some time? 50 polygons (4-vertex) ~15 minutes 644 benefitial mutations 6,120 candidates 88.74% fitness 50 polygons (6-vertex) ~15 minutes 646 benefitial mutations 6,024 candidates 89.04% fitness 50 polygons (10-vertex) ~15 minutes 645 benefitial mutations 5,367 candidates 87.01% fitness Requirements.