Archive for the ‘Science’ Category

This was the challenge I’ve set out before myself, which lead me to creating MathematicaAnki tools (picture below). “My final suggestion is to pick some sort of organisational system and make a real effort to stick to it; a half-hearted system is probably worse than no system at all.” Terence Tao There’s an enormous amount of […]


Some notes from my classes and worth seeing (if not remembering) results. We’d like to calculate the function called density of states, for systems with partially restricted dimensions. In fact all of the considered cases are 3D, they’re just confined spatially in one (2D) or two directions (1D). Starting from the general term for density of […]


Turns out Apple didn’t mess it up. The real reason is SMB file sharing. Just go to System Preferences -> Sharing -> Options… and disable Share files and folders using SMB and you’ll notice immediate boost in responsiveness! via http://forums.macrumors.com/showthread.php?t=1662449&page=3


Sometime ago I saw a TedTalk done by Mr. Daniel Wolpert, which now (once I’ve watched it again) made an even deeper impression on me; The bayesian predictions and the feedback loops are surely something worth thinking about, but the first time I’ve watched it I’ve became instantly occupied with one of the very first sentences he said, paraphrasing: “The […]


I don’t know how much this was my fault, but it took me some time to figure this out. Problem: Anyway Xcode couldn’t access my iPhone 4, nor another iPhone 4 nor iPad 2. The error that I keep getting in the Organizer was: Xcode has encountered an unexpected error (0xC00D)Permission denied, at ‘/SourceCache/DTDeviceKit/DTDeviceKit-1196/DTDeviceKit/DTDeviceKit_Utilities.m:854’ I’ve tried […]


The 3rd semester of Computer Science on Wroclaw University of Technology brought to me an occasion to do something that was written for a long time in my Idealist. After writing a 3d engine with Gouraud shading and per vertex Phong lightning model, which was the basis of evaluation of the graphics course, I’ve decided to do something […]


Today I announce the first alpha version of External Lightmapping Tool that works not only with 3dsmax and Windows, but now also with Maya and Mac OSX. So far the system was tested on Windows 7 and Mac OSX Snow Leopard with Maya 2010. The package can be downloaded from here: http://unitylightmapper.googlecode.com/files/elt_maya.zip How to use […]


It’s been a while since the first post about the lightmapping tool (even the name evolved to a more general one ;)) and I handed out the system to Unity a week ago. Now the mentors are making from it a neat package and adding some example assets and I myself am making the documentation […]


It’s some time since my post about Fedora & Vista dual boot using the Dell Media Direct button and I’ve realized that I don’t use linux at all. It’s not that I don’t like to – I would love to switch to another more customizable system, but I can’t. Windows binded me with too many […]


I’ve changed a little bit the list for last week Last week: Automatic setting the lightmaps accordingly to their name as soon as they appear in Asset folder Basic batch render script for 3dsmax, which opens max and renders&saves all lightmaps (yet hardcoded) A solution for applying materials, and setting up lightning have been overdiscussed […]


THIS WEEK SUMMARY: The main core with GUI has been done which contain a following options: A dynamic list of lightmaps (shown as buttons) Simply hierarchy display list for currently highlighted lightmap Most necessary options “Pick selected objects”, “Clear list”, “Export FBX” Optimal UV Packing: the size of lightmap spot for an object depands on […]


After some consideration I decided to change the name for a moment to make it less confusing for other people, because the project indeed is focused on the connection between Unity and Vray over 3dsmax, but the main core will allow everybody to use it for their own purpose with any software with a FBX […]


Yesterday I’ve received an information that my proposal (+ video) which I sent for Unity Summer of Code contest was accepted and I’m really excited about the system development 🙂 Basically the system is automating the bake process for Unity powered games using a powerful rendering software VRay. The Unity team proposed a bit different workflow […]


I was trying to get a matrix for a projection of any point to a line given by the following equotations: After some time of research I’ve ended with the following result: Let then Of course the result isn’t new at all, it was just a big efford for me to do that at midnight […]


This post is meant to be a short introduction to a new science branch on my blog dedicated programming in Assembler. One can think that the use of Assembler is deprecated these days, but there are still many reasons for a computer scientist to know this low-level language. The primary reason to program in assembly […]


Today, I noticed an amazing and worth memorizing thing. I turns out that fibbonacci series shows up also in graph theory in one of the simplest graphs: Where’s Fibbonacci hiden here? Well, the graph can be represented as a folowing matrix: By multiplying the matrix by itself and using induction we get: 


It’s a trick  that makes posible to write polish characters on your mobile in Python editor using Nokia SU-8W. All that’s needed is PyS60 installed with appuifw2 module. To write a polish letter press Alt Gr + Key, where Key is the usual key under which polish character is hiden. Few things that I could […]


Matrixes seem to have a lot of wonderful properties, for example they may help checking if given triangles represented each by three complex numbers (verticles) are simillar. So, two triangles represented by complex numbers and are similar if, and only if: Proof coming soon.


True 🙂 However I would put physicists a bit nearer mathematicans 😉


God damn. I took me about a half of an hour to Google that out…   Things to do to fix Visual Studio C++ Express (Probably in most cases you don’t have to delete those entries first. (worked for me)):   Go to Start -> All Programs -> Accessories -> Run, and type “RegEdit.exe” Locate […]