João Machete

Author Archive

Explosion

by admin on Mar.10, 2010, under General

This is a simple explosion. Only particle system and some lines of code. The ball has been scatter in several pieces and then instance all pieces to the initial particles.

A incandescence as been added through a ramp shader.

Inside of the particleCoudShader I put the Diffuse Coefficient to 0, and even with this option turned off, the render took me about 15min each frame with mental ray.

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Procedural Rain System

by admin on Mar.09, 2010, under Research and Development

The nucleus solver is tool that can handle pouring liquids results. To these example I tried to recreate a rain system, with some tweaks and tests I found easy way to attract the particles to some object.

A plane has been setup to emit particles, the rain particles will die when they collide with the sphere “lifespanPP =0″, that event will create one particle without any speed. That second particle will create event witch will produce more 20 particles.

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Underwhater with nParticles

by admin on Mar.09, 2010, under Research and Development

In this scene I tried to recreate a underwater ambient 100% procedural, all done in maya. I used nParticles with the new solver Nucleus for the school of fish and for the plants. Each fish contain forces and field to push and pull other fishs and plants close to them.

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Replace backslash character to slash in a String with JAVA

by admin on Aug.20, 2009, under General

Today I had a small problem with java, and I leave here my solution to help others who are in the same situation.

Here I give you a small trick to replace backslash special caracter to another caracter in Java. If you are doing some project, and you need to replace a backslash “\” with the forward slash “/”, you will notice you can´t do this in the normal way.

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First Time with GWT

by admin on Feb.03, 2009, under Research and Development

This tutorial introduces you to GWT. You can do develop GWT apps without any IDE, but it is really helpful if you use one. I choose Eclipse with Cypal Studio for GWT (which was earlier known as Googlipse) to walk thru this tutorial.

Requirements:

  • You need the latest GWT. You can download it at here. Make sure you download the latest version.
  • Download and install Eclipse 3.4 with WTP 2.0. You can get it here.
  • You need a Java 1.5 VM to run Eclipse. You can get it here.
  • Download Cypal Studio for GWT from here and extract it to your eclipse directory.

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Install Google Web Toolkit in Ubuntu

by admin on Feb.03, 2009, under General

#!/bin/bash

wget http://google-web-toolkit.googlecode.com/files/gwt-linux-1.5.3.tar.bz2 -P /tmp
tar xjf /tmp/gwt-linux-1.5.3.tar.bz2 -C /tmp
sudo mv /tmp/gwt-linux-1.5.3 /opt/gwt-linux

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Drupal Event Calendar using Date, Calendar, Views, and CCK

by admin on Jan.21, 2009, under General

Some of my good friends from the university have recently to setup upcoming event calendar on Drupal 6.x. I spent some time trying to help them and I had a hard time finding instructions…..so here’s my experience…

I used this modules:

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