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Often the most difficult part to learning to use a new class library is learning how to read and interpret the documentation, and the Processing libraryis no exception.

The main documentation for Processing is accessible from the Reference and Learning links at the top of the Cover page . While extensive, this documentation is not presented in industry standard javadoc format.Documentation in standard javadoc format is available here .

Android and HTML 5 make Processing more relevant

The Processing environment has been around for a long time. It was initially developed to serve as a software sketchbook and to teach fundamentals of computer programming within a visual context.While it originally occupied a very narrow niche market, it has now become more relevant on a broad scale for two important reasons:

  • Processing can be used to develop Android apps .
  • Processing has a sister product named Processing.js that will automatically convert (with some limitations) Processing source code into JavaScript code suitable for use with the canvas element in HTML 5.

In other words, Processing directly supports two of the newest and hottest items in information technology; mobile apps and HTML 5 canvas.

Discussion and sample code

The Processing website provides a number of tutorials that explain important aspects of the Processing environment and also provide sample codethat illustrates those aspects of the environment.

An integrated development environment (IDE)

As you will see when you study those tutorials, the Processing programming environment comes with its own integrated development environment (known as the Processing Development Environment or PDE). A screen shot of the PDE is shown in Image 1 .

Image 1. the processing development environment (pde).

The Processing IDE.
Image 1. The Processing Development Environment (PDE).

Click here to view an extensive discussion of the PDE.

While it is possible to develop Processing programs outside the PDE, that that presents several issues that I prefer not to deal with involving libraries, etc. Therefore, I will probably use the PDE in most of the modules in thiscollection.

The Getting Started tutorial

The Getting Started tutorial explains how to download and install the Processing environment on Windows, Mac,and Linux.

In addition, that tutorial shows you how to create your first sketch along with a lot of other useful information. Study it carefully.

Run the sketch

The Objects tutorial explains how to write a sketch in which you define your own class named Car and then instantiate and manipulate objects of that class.

I encourage you to copy the code from that tutorial into the PDE. ( Image 1 shows the beginning of that sketch.)

Once you have copied the code into the PDE, you have three optional ways to run the sketch:

  • Run directly from the PDE.
  • Run in JavaScript mode.
  • Export and run as an application.

Run directly from the PDE

You can run the sketch directly from the PDE by either clicking the triangular arrow button shown near the upper-left corner in Image 1 , or by selecting Run from the Sketch menu.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, The processing programming environment. OpenStax CNX. Feb 26, 2013 Download for free at http://cnx.org/content/col11492/1.5
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