Entries Tagged 'Embedded' ↓

I have a feeling that some of you have tried my tutorials and then thought “This is a 3D tutorial, but why is everything in 2D?”. So in this tutorial we will make some real 3D meshes. This is also necessary for the following tutorials.
When I started I had problems with finding out how [...]

JNI or Java Native Interface is the interface between the Java code running in a JVM and the native code running outside the JVM. It works both ways, that is you can use JNI to call native code from your Java programs and to call Java code from your native code. The native code normally [...]

Enterprise applications and mobile applications have quite different requirements. Starting an enterprise application is just something you do once before it continue running for months or years. On the other side of the spectrum most mobile applications seldom runs for more than minutes, run by a bored users standing in line or riding the bus. [...]

Last tutorial was about transformations. This tutorial will be a short one. I’m going to talk about adding color to your mesh. I will continue with the source code from tutorial II.
Adding color
3D models with no colors are pretty boring so let’s add some color to it. In general colors need no explanation. OpenGL ES [...]

The Cocoa and Cocoa Touch frameworks has a really nice function for acquiring a localized string NSLocalizedString(). Just pass in a key and you are done, for strings that are known at least. Sometimes you are getting unknown strings from a data source not under your control, strings representing just a fraction of the text [...]

Last tutorial was about building your polygons. This tutorial is all about transformations, how to move the polygons around. I will continue this tutorial from where the previous ended so you can use that source code or make a copy of it.
I am not going to bore you with a lot of mathematics but I [...]

As a professional Java ME developer I’ve never really come to terms with the MIDlet class and its underlying aesthetics. As a sort of remedy I often use a simple utility-class I wrote some years ago to conceal the principles of the MIDlet class. It concerns the way you write your Java ME-application so I [...]

Previous tutorial was all about setting up the GLSurfaceView. Be sure to read it beacuse it’s a really importent one to be able to continue.
Building a polygon
In this tutorial we will render our first polygon.
3D models are built up with smaller elements (vertices, edges, faces, and polygons) which can be manipulated individually.
Vertex
A vertex (vertices in [...]

I’m going to write a couple of tutorials on using OpenGL ES on Android phones. The theory of OpenGL ES is the same on different devices so it should be quite easy to convert them to another platform.
I can’t always remember where I found particular info so I might not always be able to give [...]

As Halloween is approaching and the aftternoons grow rainy, it’s time for some tinkering. So, why not try to get the pumpkins a bit more interesting than cut-out veggies?
Getting some tinkerers together was no problem, so we got three families with kids, 4 pumpkins, one LEGO Mindstorms set and 2 Arduinos to start with. I [...]

Assume that you on your desktop computer browse to a web page with the following page source

Clicking on the first link you expect your browser to start a new tab and navigate to the url that was specified in the href. If you click on the second link you would expect that the browser opens [...]

First impressions last, and the very first impression your users have of your iPhone application is the start up. First step is to have a nice Default.png, but not many words spilled on that one, it is well covered in Apple’s documentation.
Creating a perfect Default.png is impossible, especially if you have different setup of navigation [...]