the world is a pixel
Criando Imagens Dinâmicas em Java na Web
Durante a apresentação do Tarso Bessa em Sobral alguém na platéia perguntou sobre um equivalente a biblioteca GD no PHP. O GD é uma biblioteca para manipulação de imagens comumente usado para criação de imagens dinâmicas (como gráficos) ou miniaturização de imagens. A libGD está disponível para várias linguagens além do PHP.
A respostá para a pergunta é bem simples, você pode usar todo o suporte para imagens disponível no Java SE (inclusive toda a API de Java2D).
Alguns links que podem ajudar:
This entry was posted on 15 October, 2008 at 5:16 pm, and is filed under português. Follow any responses to this post through RSS 2.0. You can leave a response or trackback from your own site.
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Python, flatten a list
Surprisingly python doesn’t have a shortcut for flatten a list (more generally a list of lists of lists of…). I made a simple implementation that doesn’t use recursion and tries to be written clearly. I get a element from a “bad” list (a list that can have another lists). If the element is not a [...]
OpenPixels: simple sprite sheet with Processing
22 August, 2011 - 10:54 pm
Tags: Openpixels, Pixelart, Processing, programming
Posted in english | No comments
/** * Openpixels example in Processing. * This simple example of how to get a sprite * from a sprite sheet. */ PImage bg; PImage sprite_sheet; PImage player; void setup() { // load images bg = loadImage("kitchen.png"); sprite_sheet = loadImage("guy.png"); /* The sprite size is 32×49. Look guy.png, the "stand position" is [...]
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23 July, 2011 - 9:57 pm
Tags: Atiaia, C, Marco Diego, programming, Ray Tracying
Posted in english | 1 comment
This was a project that me and Marco Diego created during our graduation for the Computer Graphics course. It is a ray tracing engine build from scratch in C. It was great exercise of experimentation on how implement object-oriented design patterns in ANSI C. Later Marco continued it in his master’s degree thesis implementing more [...]
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9 May, 2011 - 12:14 pm
Tags: Elgg, performance, PHP, Social Network
Posted in english | 3 comments
Elgg is a open source social networking framework. In my Elgg instance (1.7.2) I have some entities with a metadata called tags. One entity can have zero, one or many tags. Tags are strings. I’m trying to retrieve the last updated files with the tags tagA, tagB, … tagI in a profile widget using this [...]
Android screen height and width
12 March, 2011 - 9:30 pm
Tags: Android, Java, mobile, programming, screensize
Posted in english | 1 comment
Context ctx = getContext(); Display display = ((WindowManager)ctx.getSystemService(ctx.WINDOW_SERVICE)).getDefaultDisplay(); int width = display.getWidth(); int height = display.getHeight(); Yes, there are easier ways to retrieve the screen width on Android but there are cases that this long code is the only solution. You may already have the Context. WindowManager or the Display and so it would be [...]
PHP: array, all elements but first
9 March, 2011 - 12:52 pm
Tags: array, array_shift, PHP, programming
Posted in english | No comments
$bric = array("Brazil", "Russia", "India", "China"); $ric = $bric; // array copy $br = array_shift($ric); // left shift at $ric. $br stores "Brazil" print_r($bric); // $bric remains the same print_r($ric); // $ric lost "Brazil" Output: Array ( [0] => Brazil [1] => Russia [2] => India [3] => China ) Array ( [0] => Russia [...]
palestra android
4 May, 2010 - 2:24 pm
Tags: Android, CEJUG, Faculdade Evolução, notícia, palestra
Posted in português | 1 comment
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Java: invoking a method by name
29 April, 2010 - 10:29 am
Tags: Class, Java, method, programming, Reflection
Posted in english | 2 comments
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calling commands in Java
8 April, 2010 - 1:09 pm
Tags: getruntime, Java, programming, runtime
Posted in english | No comments
I don’t like the approach of calling native shell commands in any language instead of using multi platform libraries, but here is a little prof of concept Java program to call native commands. import java.io.*; import java.util.*; public class Exec { public static void main(String args[]) throws IOException { Process proc = Runtime.getRuntime().e xec(args); BufferedReader [...]
Iterating over a HashMap
8 April, 2010 - 11:22 am
Tags: collections, enhanced loop, foreach, hashmap, iterating, Java, programming
Posted in english | No comments
Iterating over a HashMap using the enhanced loop (foreach) in Java is a good way to keep your code smaller, more legible and usually more semantically coherent. import java.util.HashMap; import java.util.Map; class Foo {} public class Main { public static void main(String args[]){ Map<Byte, Foo> mHash; mHash = new HashMap<Byte, Foo>(); [...]
8 September, 2009 - 8:48 pm
olha aki nao tem imagem nemuma v6 não sabem por imagens dinamicas ?
presisam de ajuda ?