Tech Lull
Java Tip - JogAmp: JOGL, JOAL, JOCL - one stop media
July 28, 2010
July 28, 2010
JOGL, Java OpenGL bindings (graphics), is now hosted at http://jogamp.org/. In addition, JogAMP provides JOAL, Java OpenAL bindings (audio), and JOCL, Java OpenCL bindings (cpu/gpu).
The JogAmp project itself is a nice example of using JNA/JNI. The GlueGen...
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Java Tip - JNA: Java Native Access
July 23, 2010
July 23, 2010
Java Native Access (JNA) is the successor of the Java Native Interface (JNI). Both allow your java code to make use of an existing library, like a dll, or .so file that was written in C or C++.
The major advantage of JNA over JNI is requiring no boilerplate code.
The libraries that you use JNA for can be built in windows system dlls, to custom made dlls of large projects.
Despite how large java and the java community are, there are real cases (I have experienced one...
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PHP Tip - Basic Java and PHP Syntax Differences
June 04, 2010
June 04, 2010
PHP and Java are generally used for vastly different purposes. However they share a fairly common syntax based on C++. If you use both, here are some differences to remember.
A simple PHP function might be
public function add_three_numbers($x, $y, $z)
{
$answer = $x + $y + $z;
print('foobar message'.$answer."\n");
return $answer;
}
...
$sum = $this->add_three_numbers(1, 2, 3);
while the Java equivalent is...
OpenGL Tutorial #6 - A Basic Camera and Keyboard Input
April 13, 2010
Synopsis: in this tutorial we will make use of keyboard listeners. the camera position can be changed by pressing the arrow keys, a, or z. we will also map the escape and q keys to exit the program.
April 13, 2010
Synopsis: in this tutorial we will make use of keyboard listeners. the camera position can be changed by pressing the arrow keys, a, or z. we will also map the escape and q keys to exit the program.
SQL Tip - Finding duplicate values in a table
April 12, 2010
April 12, 2010
Let's say you have a table of inventory items for an electronics store. The primary key is an integer id, and there are no other constraints on the table. Other columns are
type, brand, model, price, etc
some sample rows are
id | item | brand | model | price
---------------------------------------------------
1 tv sharp acquos 1299
2 tv sony bravia...
OpenGL Tutorial #5 - Texture Mapping
March 23, 2010
Synopsis: In this tutorial texture mapping using JOGL is introduced. We show how easy it is to load jpg images as textures and do a variety of mapping types including linear and spherical.
March 23, 2010
Synopsis: In this tutorial texture mapping using JOGL is introduced. We show how easy it is to load jpg images as textures and do a variety of mapping types including linear and spherical.
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