Blender Project

That's the "Computer Graphics" course project.
It has been my first time using Blender. It is a great editing tool, but it has a weird user interface (I'm not talking about Graphical UI).
Mainly, you must become a "Shortcut God". After that, following tutorials and some experience, you'll get some results.

Enjoy!

Robochecker published on Google Code

We are proud to announce that the whole source code and documentation about our "lego robot playing draughts" is on Google Code, exactly here.

The software has been written in Java, using leJOS API for controlling the NXT Brick.
It is possible to use Java by flashing a custom firmware on it.

It has been a great chance to improve our programming knowledge in Java (in source code you'll find a lot of code as implementation of threading, class factories, interfaces) and have fun.

Google projects: permanent beta (or alpha?)

Google Mail: BETA!
Google Maps: BETA!
Google x | x is a Google project name.

Android was released as 1.0 version. No "BETA" word applied to it. But with the latest repository merge, they're loosing control of the huge number of sub-projects and modules of the project.
They are publishing code stubs, fulfilled with comments (not very useful in most cases), without any implementation example.

I hope Google is having strictly coupled information exchanges with big mobile devices manufacturers, or they'll soon branch the Android project, choosing their best way to implement what they need.

Merry Christmas Blog?

I don't know what happened...
But people are accessing this "almost empty blog" searching "merry christmas" or similar...

Ubuntu Linux x64

I am working on Ubuntu 8.10 x64 since 2 weeks ago.
This last release is something not comparable to other distribution I ever used.
Fedora Core 8 or openSuse could compete against it, but Ubuntu wins:

• for the excellent package manager (synaptic)
• because of the O.S. watches for user actions, always prompting the safest thing to do
  
• for the ease of installation process
• for gnome balance between performances and eyecandy stuff
• because of derived from debian
• ... much more!

What do you think about it? Let me know. Leave a comment!

When everyone would like to be a developer.

Some time ago, I was following the development of "Prince of Persia: Assassin's Creed" game.
An interview at GameTrailers.com caught my attention...
Impressive technical details, indeed...
Awful gameplay...
Jade Raymond as Game Producer...


What a Game Producer!

[UPDATE!] My access counter is listing this entry:

25.11.08 @ 15:24:48 Host ISP:Ubisoft entertainment - Canada

Animator vs Animation

Animator vs. Animation by *alanbecker on deviantART

Context switching...

Thanks to my thesis supervisor, I received a proposal for a project involving Linux kernels, ARM SoCs (and maybe x86 systems) and Android Framework.
I accepted immediately, cause of this is another chance for working on something real.
Obviously, this time I'll work at a lower level. No Java but advanced C language and compiling options on Makefiles.
So, in future, there will be some posts containing some info about linux kernel, unix drivers and so on.

Assembly language

...

MOV AX, 0 ;is weird
XOR AX, AX ;is l33t

... is just an example, or ...

MOV AX, WORD PTR [BX]
MOV DX, 10
MUL DL  ;is weird
MOV DX, WORD PTR [BX]
SHL DX, 1
MOV AX, DX
SHL AX, 1
SHL AX, 1
ADD DX, AX ;is l33t

... sigh!

I'll never win.

Android Developers. Thread Opened.

I choose to open a thread regarding Sun JavaMail, JAF and Android.
I hope it would be useful for all developers whose encountered issues or difficulties using JavaMail on Android.
There were few troubles:

• java.awt.Datatransfer class was missing (and related interfaces): they are available in the Apache Harmony SVN. There were some java.awt.Image dependancies, which have been removed.
  
• The lastest Sun JavaMail API was not working on Android: at build time, the APK popped up an error within an IMAP class. I downloaded source code of it (now Sun JM is opensource) and I fixed some classes.
• Sun JavaMail was working, but not at 100%: it was unable to manage Multipart elements of an email (so most of the email we receive). This API stored MIME-Types to/from Java Object association (a sort of mapping between them) in 2 files within the JAR file. Android is unable to read files in the classic way (due to security policy), so I decided to add the "MIME mapping" programmatically.

You can find the post on Android Developers here.

T-Mobile G1 is OUT!

First Android-based mobile phone has been released in US!
It will be sold from the 22th of October, priced 179$ (plus taxes and fees; two-year agreement required).
You can know more on this at www.t-mobileg1.com. Unfortunately, it will be SIM-Locked.
Some specifications:

• 3.2" Touchscreen display (480x320)
• QWERTY keyboard
• GPS
• 3.1Mpixel Camera
• Qualcomm MSM7210A running @ 528 MHz CPU
• 256MB ROM / 192MB RAM
• GSM/GPRS/EDGE
• UMTS/HSDPA (3G)
• WiFi 802.11 b/g
• Bluetooth 2.0 with EDR
• microSD Card Slot
  

I hope Politecnico di Torino will buy some of these devices. I'll ask if there's a way for getting a G1 for me (I'll pay it, I swear).

Ninja Cat

http://view.break.com/572561 - Watch more free videos

Android Developers Google Group - A focus on ContentProvider

As requested here, I'm posting some example code for implementing a ContentProvider on which is possible to call openOutputStream and openInputStream.
My only question is: why must I store file path in a database field called '_data', if openFile implementation is programmer's burden?

ElementProvider.java

/*
 Copyright (C) 2008  Luca Belluccini

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see .
*/

package polito.mailandroid;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashMap;

import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.content.UriMatcher;
import android.database.Cursor;
import android.net.Uri;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteQueryBuilder;
import android.os.ParcelFileDescriptor;
import android.text.TextUtils;

public class ElementProvider extends ContentProvider {
private static final String DATABASE_NAME = "poli";
private static final String DATABASE_TABLE = "elements";
private static final int DATABASE_VERSION = 1;
public static final String KEY_ID = "_id";
public static final String KEY_DATA = "_data";
public static final String KEY_MIMETYPE = "mimetype";

private DatabaseHelper mDbH;

 private static class DatabaseHelper extends SQLiteOpenHelper {
     DatabaseHelper(Context context) {
         super(context, DATABASE_NAME, null, DATABASE_VERSION);
     }
  
 public void onOpen(SQLiteDatabase db) {
  super.onOpen(db);
 }

 public void onCreate(SQLiteDatabase db) {
         db.execSQL("create table " + DATABASE_TABLE + " (" +
           KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
           KEY_MIMETYPE + " TEXT, " +
           KEY_DATA + " TEXT" +
           " );");
     }
     public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
         db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
         onCreate(db);
     }
 }



public static final int ELEMENTS = 1;
public static final int ELEMENT_ID = 2;
public static final Uri CONTENT_URI = Uri.parse("content://polito.mailandroid/elements");
private static final UriMatcher URI_MATCHER;
private static HashMap ELEMENTS_LIST_PROJECTION_MAP;
 static {
     URI_MATCHER = new UriMatcher(UriMatcher.NO_MATCH);
     URI_MATCHER.addURI("polito.mailandroid", "elements", ELEMENTS);
     URI_MATCHER.addURI("polito.mailandroid", "elements/#", ELEMENT_ID);

     ELEMENTS_LIST_PROJECTION_MAP = new HashMap();
     ELEMENTS_LIST_PROJECTION_MAP.put(KEY_ID, KEY_ID);
     ELEMENTS_LIST_PROJECTION_MAP.put(KEY_DATA, KEY_DATA);
     ELEMENTS_LIST_PROJECTION_MAP.put(KEY_MIMETYPE, KEY_MIMETYPE);
 }

public boolean onCreate() {
     mDbH = new DatabaseHelper(getContext());
     return true;
}

public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
 String[] projection = new String[] {
     ElementProvider.KEY_DATA
 };
 Cursor c = query(uri,projection,null,null,null);
 c.moveToFirst();
 String file = c.getString(c.getColumnIndexOrThrow(ElementProvider.KEY_DATA));
 c.close();
 File f = new File(file);
 int m = ParcelFileDescriptor.MODE_READ_ONLY;
 if (mode.equalsIgnoreCase("rw"))
  m = ParcelFileDescriptor.MODE_READ_WRITE;
 ParcelFileDescriptor pfd = ParcelFileDescriptor.open(f,m);
 return pfd;
 }

public Uri insert(Uri uri, ContentValues initialValues) {
     if (URI_MATCHER.match(uri) != ELEMENTS) {
      // !!!
     }
     ContentValues values;
     if (initialValues != null) {
         values = new ContentValues(initialValues);
     } else {
         values = new ContentValues();
     }
  
     if (!values.containsKey(KEY_MIMETYPE))
      values.put(KEY_MIMETYPE, "plain/text");

     SQLiteDatabase mDb = mDbH.getWritableDatabase();
     long rowID = mDb.insert(DATABASE_TABLE, "notnull", values);
     if (rowID > 0) {
         if (!values.containsKey(KEY_DATA)){
            try {
             String filename = rowID + "";
       getContext().openFileOutput(filename, Context.MODE_PRIVATE).close();
       String path = getContext().getFileStreamPath(filename).getAbsolutePath();
       values.put(KEY_DATA, path);
       update(uri,values,KEY_ID + "=" + rowID, null);
      } catch (Exception e) {
       // !!!
      }
         }
         Uri newUri = ContentUris.withAppendedId(ElementProvider.CONTENT_URI, rowID);
         getContext().getContentResolver().notifyChange(newUri, null);
         return newUri;
     }
     // !!!
     return null;
 }

public Cursor query(Uri uri, String[] projection, String selection,
         String[] selectionArgs, String sortOrder) {
     SQLiteQueryBuilder qb = new SQLiteQueryBuilder();
     switch (URI_MATCHER.match(uri)) {
        case ELEMENTS:
            qb.setTables(DATABASE_TABLE);
            qb.setProjectionMap(ELEMENTS_LIST_PROJECTION_MAP);
            break;
        case ELEMENT_ID:
            qb.setTables(DATABASE_TABLE);
            qb.appendWhere(KEY_ID + "=" + uri.getPathSegments().get(1));
            break;
        default:
            throw new IllegalArgumentException("Unknown URL " + uri);
     }
     SQLiteDatabase mDb = mDbH.getReadableDatabase();
     Cursor c = qb.query(mDb, projection, selection, selectionArgs, null, null, "_id DESC");
     c.setNotificationUri(getContext().getContentResolver(), uri);
     return c;
 }

public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
     int code = URI_MATCHER.match(uri);
     int count = 0;
     SQLiteDatabase mDb = mDbH.getWritableDatabase();
     switch (code) {
      case ELEMENTS:
            count = mDb.update(DATABASE_TABLE, values, selection, selectionArgs);
            break;
        case ELEMENT_ID:
            String id = uri.getPathSegments().get(1);
            count =
                    mDb.update(DATABASE_TABLE, values, KEY_ID + "=" + id
                            + (!TextUtils.isEmpty(selection) ? " AND ("
                                    + selection + ')' : ""), selectionArgs);
            break;
        default:
            throw new IllegalArgumentException("Unknown URL " + uri);
     }
     getContext().getContentResolver().notifyChange(uri, null);
     return count;
}

public int delete(Uri uri, String where, String[] whereArgs) {
     int code = URI_MATCHER.match(uri);
     int count = 0;
     SQLiteDatabase mDb = mDbH.getWritableDatabase();
     switch (code) {
        case ELEMENTS:
         // !!! REMOVE ALL FILES
            count = mDb.delete(DATABASE_TABLE, where, whereArgs);
            break;
        case ELEMENT_ID:
            String id = uri.getPathSegments().get(1);
            // !!! REMOVE ASSOCIATED FILE
            count =
                    mDb.delete(DATABASE_TABLE, KEY_ID + "=" + id
                            + (!TextUtils.isEmpty(where) ? " AND (" + where
                                    + ')' : ""), whereArgs);
            break;
        default:
            // !!!
     }
     getContext().getContentResolver().notifyChange(uri, null);
     return count;
}

public String getType(Uri uri) {
 String[] projection = new String[] {
     ElementProvider.KEY_MIMETYPE
 };
 Cursor c = query(uri,projection,null,null,null);
 c.moveToFirst();
 String mimetype = c.getString(c.getColumnIndexOrThrow(ElementProvider.KEY_MIMETYPE));
 c.close();
     return mimetype;
}

}

Antivirus roundup by AV-Test

Here you are a table containing a roundup of several antivirus software.

You can find more here.

Google Chrome browser SHORT review

Surfing the web by using GBrowser...
Fast, indeed. Uses Webkit, so webpages are displayed correctly... More or less.
Used memory is very low. That could be a great advantage on not very fast machines.
It is a BETA: it is not possible to manage bookmarks... No plug-ins. No extensions.
I think Google released this browser with the aim of provide a fast browser for netbooks and implement some optimization (and integration) with Google Apps (Google Gears).
It cannot replace Mozilla Firefox, now.

Official Google Blog: Google Chrome now live

Google Chrome

... Unexpected news from big G ...
Google Chrome will be released as Beta version within few hours from now.
Some features I caught on the net seem to be:

• optimized "Task - Process" management
• optimized JavaScript engine
• uses WebKit (as Safari and the Android Browser)
• designed from scratch, based on nowadays needs
• optimized Garbage collector
• (?) maybe based on VMs

Here you can read a clear and easily readable document, explaining why Google is releasing that browser.

Heavy Rain...

WOW!

OBSOD: Olympic BSOD

From Gizmodo

Chinese staff could not manage a BSOD during Olypics games opening ceremony...
It seems a IRQL_NOT_LESS_EQUAL error, as usual.

Firefox alphas...

A new Mozilla Firefox Alpha version is out: you can read relase notes here.
It contains a little taste of the future Gecko rendering engine: an improved web standards compliancy.
W3C is a consortium developing and publishing web specifications, guidelines, software (etc.) to improve Web fruition in the most efficient way.
The W3C's core business is to standardize and make software, websites, protocols, browsers interoperable.


To check your browser W3C compliancy, let it take these 3 test:

• Acid Test I
• Acid Test II
• Acid Test III

I hope HTML5 will solve issues and remove the old HTML retrocompatibility burden.

Facebook account!

I've joined Facebook.
You'll find my account here...
I think it will become my "personal website": I found photo albums very useful... And I hope to have a feast by using Facebook for advertising it.
[OT]Today there will be a great party on the beach, lasting the entire night, until sunrise! Don't try to find me on 15th of August! You could meet a zombie, not me.