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I must confess that secretly the article I wrote last time (in which I introduced ndarrays) was just a pretext to introduce the stuff that I am going to write about today: which is the cwise library for array operations in JavaScript. Array operations Briefly, array operations are component-wise operations that can be applied across multiple multidimensional arrays simultaneously.  Array operation

The past few months I’ve been working to move more of my work into JavaScript, and in particular the node.js ecosystem.  I hope that by doing this I will be able to create better demos and applications that are easier to use as well as develop. Numerical Computing in a Hostile Environment But despite the numerous practical advantages to working in JavaScript (especially from a user experience pers

In the last two posts I introduced ndarrays, and explained the rationale and implementation details of the library.  In this post I am going to show a few of the libraries that I have written using ndarrays.  All of this code works in both node.js and within any browser that supports typed arrays.  You can run the demos directly in node.js or else test them out in a browser using a bundler like br

Continuing in the recreational spirit of this blog, this week I want to write about something purely fun.  In particular, I’m going to tell you how to convert retro 16 x 16 sprites into 3D miniatures: Turning an 8-bit sprite into a 3D model This project was motivated purely by intellectual curiosity, and doesn’t really have too many practical application.  But it is pretty fun, and makes some neat

Last time we formulated the problem of isosurface extraction and discussed some general approaches at a high level.  Today, we’re going to get very specific and look at meshing in particular. For the sake of concreteness, let us suppose that we have approximated our potential field by sampling it onto a cubical grid at some fixed resolution.  To get intermediate values, we’ll just interpolate betw