fermat-org

With fermat-org or fermat.org we name the 3D interface of the whole Fermat platform, currently available in http://dev.fermat.org. Its main goal is to help everyone understand and see the current status of the wide ecosystem of components that makes Fermat a reality. To be able to show such a complex structure we needed to make use of three dimensions, making use of certain Web Advantages such as WebGL to use the device's graphics hardware to render cool 3D or to render in a HTML canvas if there is not a graphics device available; and to help the development we use the fine WebGL library Three.js, which saves us a lot of work and has a lot of useful stuff. In fermat-org we don't just show the Fermat's components, we also show the relations between different platforms and super layers, the developers currently working on any Fermat component, the processes to show some of the principal tasks made by Fermat and even 3D books where you can read and learn all about Fermat. This is a complex task, but we enjoy adventuring in new technologies, libraries and crazy things to get the job done and show everyone the face of a system as alive as Fermat. Don't hesitate to watch the website by yourself, and if you like what you see and want to explore some new tools and contribute the website development then fork us! You are invited to join the family. Here's everything you need to know to get started with the development.

Installation Guide

Part I: Setting Up the Environment.

Overview

Fermat-org the system is divided into two modules which are the server and the client. To work in these modules, first thing to do is install the version control system (Git), to keep track of source code and allow other programmers to collaborate on development.

To work on the server side the following programs must be installed:

• Node.js
• MongoDB
• RockMongo (a MongoDB administration tool)
• apidoc (documentation tools)

For instructions on installing these programs go to the guide api-server.

To work on the client side the following programs must be installed:

• Node.js
• Xampp
• Gulp
• Brackets or any other text editor of your choice
• Jshint

Although there are many ways to configure these tools we provide a recommended configuration work environment.

Working in Windows.

Most developers work on Fermat-org to use Windows client side, but to work on the server side it is necessary to use Linux.

Installing Git.

Installing Git on Windows is fast and easy just have to download the installation package for Windows and ready.

download

After you've downloaded have to configure global variables as follows:

$ git config --global user.name "User Name"
$ git config --global user.email name123@example.com

Alternatively, you can download another application client function as Git, such as SourceTree Atlassian.

Installing Xampp.

Simply download the executable from their official website and install.

Installing Node.js.

Installation for Windows. Go to the official website and download the executable file and ready.

Installing Gulp.js.

Gulp is a tool that will convert several files into one js.

After installing the Node.js run these commands to install the gulp.js.

npm install -g gulp

Installing Adobe Brackets.

Go to the official website and download the executable file and then run.

Installing JsHint.

The analyzer JsHint is a JavaScript code to avoid mistakes, it is a more permissive than JSLint version. This analyzer must be downloaded for Adobe Brackets or other text editor that supports it.

Go to Extensions Manager and look Jshint and install.

In the case of brackets, open the preferences file and add the following to the following:

"language": {
        "javascript": {
            "linting.prefer": [
                "JSHint"
            ],
            "linting.usePreferredOnly": true
        }
    }

In other text editors you have to edit the file .jshintrc to match ours, which is in-visualization platform.

Part II: Downloading the repository Fermat-org.

Creating a fork of a repository Fermat-org.

A fork is a copy of a repository. Forking a repository allows you to freely experiment with changes without affecting the original project.

To create a fork follow these steps:

• Access GitHub.

• Access the repository from which you want to create a fork.

• You have to head to the upper right side and click on the Fork Button.

• A pop-up will show up asking “Where should we fork this repository?” there you have to select your own user.

Keep your fork synced

You might fork a project in order to propose changes to the upstream, or original, repository. In this case, it's good practice to regularly sync your fork with the upstream repository.

#####Step 1: Set Up Git

If you haven't yet, you should first set up Git. Don't forget to set up authentication to GitHub from Git as well.

#####Step 2: Create a local clone of your fork

Right now, you have a fork of the fermat-org repository, but you don't have the files in that repository on your computer. Let's create a clone of your fork locally on your computer.

• On GitHub, navigate to your fork of the YOUR_USERNAME/fermat-org repository.

• In the right sidebar of your fork's repository page, copy the URL of for your fork https://github.com/YOUR_USERNAME/fermat-org.git.

• Open Terminal (for Mac and Linux users) or the command prompt (for Windows users).

• Type git clone, and then paste the URL you copied in Step 2. It will look like this, with your GitHub username instead of YOUR-USERNAME:

  git clone https://github.com/YOUR-USERNAME/fermat-org.git

• Press Enter. Your local clone will be created.

Now you have a local copy of your fork of the fermat-org repository!

Warning: On Windows, there is a limit for the path length, which is 260 characters. As gulp is installed in the repository to save you its configuration, the node.js files go too deep and can pass that limit, so you should clone the repository directly in the drive root ("C:" for most cases). If you work on linux, there's not such limitation. #####Step 3: Configure Git to sync your fork with the original repository

When you fork a project in order to propose changes to the original repository, you can configure Git to pull changes from the original, or upstream, repository into the local clone of your fork.

• Open Terminal (for Mac and Linux users) or the command prompt (for Windows users).

• Change directories to the location of the fork you cloned in Step 2: Create a local clone of your fork.

• Type git remote -v and press Enter. You'll see the current configured remote repository for your fork.

  git remote -v
# origin  https://github.com/YOUR_USERNAME/fermat-org.git (fetch)
# origin  https://github.com/YOUR_USERNAME/fermat-org.git (push)

• Type git remote add upstream, and then paste the URL of the original repository press Enter. It will look like this:

git remote add upstream https://github.com/ORIGINAL_OWNER/fermat-org.git

• To verify the new upstream repository you've specified for your fork, type git remote -v again. You should see the URL for your fork as origin, and the URL for the original repository as upstream.

git remote -v
# origin    https://github.com/YOUR_USERNAME/fermat-org.git (fetch)
# origin    https://github.com/YOUR_USERNAME/fermat-org.git (push)
# upstream  https://github.com/ORIGINAL_OWNER/fermat-org.git (fetch)
# upstream  https://github.com/ORIGINAL_OWNER/fermat-org.git (push)

Part III: Synchronize fork and make pull request.

Sync a fork of a repository is necessary to keep it up-to-date with the upstream repository.

Before you can sync your fork with an upstream repository, you must configure a remote that points to the upstream repository as explained in the previous section.

Open Terminal and change directories to the location of the fork you cloned.

####Synchronizing the local repository of the upstream repository. Type the command in terminal

git pull upstream

The local repository will be updated.

Alternatively you can use git fetch upstream to bring any changes in the original repository and then do the master merge your local branch. The difference between git pull and git fetch is: git pull automatically updates your local branch and you do not have to merge git.

To update the local repository using git fetch type the following commands in terminal and then press INTRO.

git fetch upstream

Check out your fork's local master branch.

git checkout master
# Switched to branch 'master'

Merge the changes from upstream/master into your local master branch. This brings your fork's master branch into sync with the upstream repository, without losing your local changes.

git merge upstream/master
    # Updating a422352..5fdff0f
    # Fast-forward
    #  README                    |    9 -------
    #  README.md                 |    7 ++++++
    #  2 files changed, 7 insertions(+), 9 deletions(-)
    #  delete mode 100644 README
    #  create mode 100644 README.md

If your local branch didn't have any unique commits, Git will instead perform a "fast-forward":

git merge upstream/master
    # Updating 34e91da..16c56ad
    # Fast-forward
    #  README.md                 |    5 +++--
    #  1 file changed, 3 insertions(+), 2 deletions(-)

####Synchronizing the origin repository of the local repository. First commit your local changes and type the next command in the terminal

git push

The origin repository will be updated.

####Making a Pull Request to your Responsible

• A Pull Request is where we ask our Responsible to get the latest changes we've made.

• The easiest and most visual way to do this is through GitHub. In order to do so, we have to head to our Fork, and on the left margin you'll see an green button that says: New Pull Request, click it. The web will show you a screen with a series of scrollable menus in which it indicates:

  To whom you wish to make the Pull Request? To what branch? From where do you wish to make the Pull Request? To what branch?

• Be sure to pick the fork of your Responsible, the master branch on the first, and your fork and the master branch on the second.

• Click the green button that says: Create pull request

• Fill all the fields indicating the reason to make the Pull Request and which where the modifications made.

• Confirm the Pull Request by clicking the button: Create Pull Request*, and there ends your responsibility.

Part IV: Compilation of Fermat-org locally.

Gulp running.

Once you've downloaded the repository, you must generate the file main.js to onset of Fermat-org locally, this process is straightforward:

• Open the Windows command console (Start + R).
• Type cmd to start the command line.
• From the console go to the repository folder Fermat-org/platform-visualization.
• Write gulp, to run.

Once set, gulp runs in this window to regenerate main.js whenever a change is made to a file. Please note that when you start programming you must repeat these steps so that the main.js is always updated with your changes.

Running Fermat-org.

• With internet: Just go to the browser.

• Without Internet: You must modify the file getData.js, located in fermat-org/platform-visualization/src. Comment the $.ajax and uncomment setTimeout.

Code agreement

About naming variables

• Variable names: The variables will be named using lowerCamelCase and they will be as descriptive, short and concise as possible. lowerCamelCase is one of the most common classifications in programming and is a name that includes several words, it will be written without separation and the first letter of each word, except the first, is capitalized. Example:

var edades_de_personas; //BAD
var edadesdepersonas; //BAD
var arrEdadesDePersonas; //BAD, the name must be descriptive enough to provide its type
var edadesPersonas; //GOOD

• Global: When reading Global variables, they will be set for window. to check that it is global. The global present in other code files will be used only for reading or calling, not to change its value. Example:

var global = 3;

function foo() {
  var local = window.global + 3;
}

Avoid creating more global variables as much as you can

• Constant: The constant variables are completely written in capital letters and the words are separated by underscore (_). Example:

var MAX_NUMEROS = 3;

About signs and styles

• Styles: The keys to open a function will be written in the same line where it was declared

function foo() {
  ...
}

If a condition or block takes one line, it can be written right on the next line with proper indentation

if(condicion)
  accion();
  
  ...

/*If the "if" is a single line but has an else, and else has several lines, it will be drawn with keys
and the else will go on the bottom line. Some editors have trouble if the else is put on the same line where it closes*/
if(condicion) {
  accion();
}
else {
  otraAccion();
  masAcciones();
}

//If otherwise, both if and else have a single line, there won’t be a problem to leave them without keys
if(condicion)
  accion();
else
  otraAccion();

No space is left between the brackets, but will leave it between signs and commas:

foo = llamada( 'hola', 30, i + 5 ); //Mal
foo = llamada('hola',30,i+5); //Mal
foo = llamada ('hola', 30, i + 5); //Mal
foo = llamada('hola', 30, i + 5); //Bien

• Comparisons: for common comparison we will use === since it is the safest, and it is only true if the values are also the same type. The use of other comparisons is only allowed when the expected variable is a reference (not a number, or a Boolean, or string) and you want to verify their existence using variable != null and also if(variable). You can make exceptions to this rule if and only if the expected variable is a string and is not allowed to be empty.

• Default values: While the default settings are applied in ES6, it is a very new and not many browsers support it, so there are two ways to assign default values:

function foo(varA, varB) {
  varA = varA || 'Sin nombre'; //if and only if varA is not a number, boolean. (also empty strings will be rejected)
  varB = (varB !== undefined) ? varB : 10; //for other cases (this is preferred since it’s safer for value variables)
}

About structures and objects

• Public attributes: Public attributes are created using this.
• Public methods on an object that can be repeated: If an object is designed to have multiple instances in the code, the methods are not created with this, but it will be added to the prototype and should not have private methods.
• Private Attributes: Private attributes are created using var.
• Using public attributes within the object: Any object will have a private attribute as a variable named self that will reference the variable this in order to safely access the methods of that object (because we know this might not be what we expect). Here’s an example of the skeleton of an object with everything it could have:

//in its own myClase.js file
function myClase(parametros) {
  
  //Constant
  var CONSTANTE = 10;
  
  //Public attributes
  this.atributoPublico = null;
  
  //Private attributes
  var self = this;
  var attrPrivado = 30;
  
  //Public methods (if the class will only have one instance)
  this.publico = function(params) {
    //...
  }
  
  //Private methods (the same condition as before)
  function privada(params) {
    //...
  }
  
  //Events if there are any
  
  //Initializing code
  
}

//Public methods (if multiple instances of the same object will be used)
myClase.prototype.funcionPublica = function(params) {
  //...
}

• About loops: If there are several for loops in the same function and they use the same variable, the variable will be created as a variable of the function:

//Bad, redefiniton of i
function foo() {
  //...
  
  for(var i = 0...)
  
  for(var i = 0...)
}

//Good, nothing to worry about
function foo() {
  //...
  var i;
  
  for(i = 0...)
  
  for(i = 0...)
}

The functions callback are not defined within loops:

//We know this is bad because when using callback, i will be the last value added.
function foo() {
  //...
  
  for(var i = 0...) {
    cargarTextura(function() {
      var textura = i;
      //...
    }
  }
}

//Correct, this way way cargar will be called for every iteration of for and with its respective values
function foo() {
  //...
  var cargar = function(textura) {
  
    cargarTextura(function() {
      //...
    }
  }
  
  for(var i = 0...) {
    cargar(i);
  }
}