Fun Approach to Learning Creative Computer Programming
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Processing adalah bahasa pemrograman dan
lingkungan untuk pemrograman (development environment) yang bersifat open source untuk memprogram gambar, animasi, dan suara. (www.processing.org)
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It is especially good for someone studying or working
in a visual field, such as graphic design, painting, sculpture, architecture, film, video, illustration, web design, and so on. The language has been used to create various data visualization and installation art pieces But most often you just see people playing with it creating complex and beautiful pictures and animations.
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The Processing software runs on the Mac, Windows, and
GNU/Linux platforms. With the click of a button, it exports applets for the Web or standalone applications for Mac, Windows, and GNU/Linux. Graphics from Processing programs may also be exported as PDF, DXF, or TIFF files and many other file formats. Future Processing releases will focus on faster 3D graphics, better video playback and capture, and enhancing the development environment. Some experimental versions of Processing have been adapted to other languages such as JavaScript, ActionScript, Ruby, Python, and Scala; other adaptations bring Processing to platforms like the OpenMoko, iPhone, and OLPC XO-1.
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Multi-platform: Any program runs on Windows, Mac OS,
or Linux. Secure: Allows high-level cryptography for the exchange of important private information. Network-centric: Applications can be built around the internet protocols. Dynamic: Allows dynamic memory allocation and memory garbage collection. International: Supports international characters. Performance: Provides high performance with just-intime compiles and optimizers. Simplicity: Processing is easier to learn than other languages such as a C, C++, or even Java.
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In 1967, the Logo programming language was developed by
Daniel G. Bobrow, Wally Feurzeig, and Seymour Papert. With Logo, a programmer writes instructions to direct a turtle around the screen, producing shapes and designs. John Maeda’s Design By Numbers (1999) introduced computation to visual designers and artists with a simple, easy to use syntax. While both of these languages are wonderful for their simplicity and innovation, their capabilities are limited. Processing, a direct descendent of Logo and Design by Numbers , was born in 2001 in the “ Aesthetics and Computation ” research group at the Massachusetts Institute of Technology Media Lab. It is an open source initiative by Casey Reas and Benjamin Fry, who developed Processing as graduate students studying with John Maeda.
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Casey and Ben began developing Processing in the fall of 2001,
releasing early alpha versions of the software soon after. In April 2005, they released the beta version for Processing 1.0 & over 125,000 people have had downloaded the Processing software. Many leading universities around the world have begun including Processing in their digital arts curriculum, including - Parsons School of Design - Bandung Institute of Technology, Indonesia - Helsinki University - Royal Danish Academy of Fine Arts, Copenhagen - School of the Art Institute of Chicago - University of Washington - Elisava School of Design, Barcelona - (and many, many others).
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Tens of thousands of companies, artists, designers, architects,
and researchers use Processing to create an incredibly diverse range of projects. Design firms such as Motion Theory provide motion graphics created with Processing for the TV commercials of companies like Nike, Budweiser, and Hewlett-Packard. Bands such as R.E.M., Radiohead, and Modest Mouse have featured animation created with Processing in their music videos. The University of Washington's Applied Physics Lab used Processing to create a visualization of a coastal marine ecosystem as a part of the NSF RISE project. The Armstrong Institute for Interactive Media Studies at Miami University uses Processing to build visualization tools and analyze text for digital humanities research.
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Tool Processing bisa didownload di:
http://processing.org/download/ (for windows 59,6 Mb) - Format filenya berekstensi *.zip Extract file program (boleh di-extract di direktori mana pun). Karena program ini dibangun dengan bahasa Java, maka sebelumnya user sudah meng-install Java Development Kit (JDK). Disarankan untuk menggunakan JDK versi 6 ke atas. Untuk memulai, jalankan file processing.exe
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Menu Toolbar Untuk keterangan lebih Tabs jelas, user bisa mempelajari beberapa Text Editor kegunaan PDE seperti menu File, Edit, Sketch,Tools, dan Message Area Help. Pada menu: Help -> Environtment Text Area
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Dalam Processing struktur program dapat
dibuat dalam tiga tingkat kompleksitas: - Mode Statik. - Mode Aktif. - Mode Java.
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Mode Statik digunakan untuk membuat gambar
statik. Contoh berikut menggambar sebuah segi empat kuning di layar. size(200, 200); background(255); noStroke(); fill(255, 204, 0); rect(30, 20, 50, 50);
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Mode Aktif menyediakan bagian setup() opsional yang
akan berjalan ketika program mulai berjalan. Bagian draw() akan berjalan selamanya sampai progam dihentikan. Contohnya menggambar segi empat yang mengikuti posisi mouse (disimpan dalam variabel mouseX dan mouseY).
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• Contoh segi empat yang mengikuti posisi mouse void setup() { size(200, 200); rectMode(CENTER); noStroke(); fill(255, 204, 0); } void draw(){ background(255); rect(width-mouseX, height-mouseY, 50, 50); rect(mouseX, mouseY, 50, 50); }
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Mode ini memungkinkan menulis program Java secara
lengkap. Salah satu caranya adalah dengan mengimport Processing library (lokasinya: \Processing1.1\lib\core.jar) ke dalam tool program Java itu sendiri. Misalnya bisa menggunakan tool NetBeans. Misalkan ingin juga mengintegrasikan dengan OpenGL library, user juga dimungkinkan untuk mengimport-nya ke dalam tool program Java tersebut. Lokasinya: - \Processing-1.1\libraries\opengl\library\opengl.jar dan - \Processing-1.1\libraries\opengl\library\jogl.jar
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Contoh program yang diintegrasikan dengan Netbeans package letsp5; import processing.core.*; public class Main extends PApplet{ public Main(){
}
} public static void main(String[] args) { PApplet.main(new String[] {"letsp5.Main"}); } public void setup(){ // Set the size of the window size(200,200); } public void draw(){ background(255); // Body stroke(0); fill(175); rectMode(CENTER); rect(mouseX,mouseY,50,50); }
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Untuk mode statik sangat direkomendasikan bagi
pemula. Untuk mode aktif, dianjurkan agar struktur penulisan kode program lebih terstruktur dan rapi. Untuk mode Java, diperuntukkan bagi Java advance programmer.
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User bisa mempelajari perintah-perintah bahasa
Processing secara lengkap pada menu: Help -> Reference Atau bisa membaca buku-buku berikut ini: - “Learning Processing - A Beginner’s Guide to Programming Images, Animation, and Interaction” by Daniel Shiffman. - “Processing - A Programming Handbook for Visual Designers and Artists” by Casey Reas & Ben Fry. - “Algorithms for Visual Design Using the Processing Language” by Kostas Terzidis. - “Processing Creative Coding and Computational Art” by Ira Greenberg.
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Dapat mengaplikasikan dasar-dasar teori komputasi
grafis dengan cepat dan mudah tanpa harus mempelajari bahasa pemrograman dari awal. Bisa diterapkan untuk Pengolahan Citra Digital. Bisa dijadikan sebagai alat percobaan, dasar pemodelan, dan sketsa grafis sebelum diimplementasikan ke dalam project sebenarnya. Dapat meningkatkan skill komputasi grafis. Bisa diintegrasikan dengan pemrograman Java. Sebagai wadah untuk menyalurkan bakat seni dan imajinasi.
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Kunjungi: http://processing.org/ Forum umum & daftar koleksi hasil karya dari
beberapa Universitas di dunia: http://www.openprocessing.org/collections/
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