e85d191b46
- merge v0.01 --> Añadido fileselector - Añadidas fuentes de Gem y Pure Data - pix2jpg incluído en Gem. Archivos de construcción de Gem modificados. - Añadido fichero ompiling.txt con instrucciones de compilación
62 lines
3.7 KiB
HTML
62 lines
3.7 KiB
HTML
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
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<meta name="Author" content="Mark Danks">
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<meta name="GENERATOR" content="Mozilla/4.5 [en] (WinNT; I) [Netscape]">
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<title>GEM - Introduction</title>
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</head>
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<body>
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<center>
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<h2>
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<u>Introduction</u></h2></center>
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GEM is the Graphics Environment for Multimedia. It was originally written by
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<a href="http://www.danks.org/mark">Mark Danks</a> to generate real-time computer graphics,
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especially for audio-visual compositions.
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Because GEM is a visual programming environment, users do not need any experience
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in traditional computer languages.
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<p>GEM is a collection of externals which allow the user to create
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<a href="http://www.opengl.org">OpenGL</a>
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graphics within <a href="http://www.crca.ucsd.edu/~msp/software.html">Pd</a>,
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a program for real-time audio processing by <a href="http://www.crca.ucsd.edu/~msp">Miller
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Puckette</a> (of <a href="http://www.ircam.fr">Max</a> fame).
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<p>There are many different shapes and objects, including polygonal graphics,
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lighting, texture mapping, image processing, and camera motion. All of
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this is possible in real-time without any previous programming experience.
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Because GEM is an add-on library for <a href="http://www.crca.ucsd.edu/~msp/software.html">Pd</a>,
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users can combine audio and graphics, controlling one medium from another.
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<p>GEM is supported in part by a grant from the <a href="http://www.intel.com">Intel
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Research Council</a> for the <a href="http://www.gvm.com">The Global Visual
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Music</a> project of <a href="http://felix.usc.edu/vibeke.html">Vibeke
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Sorensen</a>, <a href="http://www.crca.ucsd.edu/~msp">Miller Puckette</a>
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and <a href="http://www.earunit.org/rand.htm">Rand Steiger</a>.
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<p>An important thing to remember is that GEM is NOT an application.
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It is a library that Pd loads at run-time. Make sure that you see
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the section on <a href="GemWPd.html">using GEM with Pd</a>. This
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manual assumes that you have Pd working correctly and can load up patches
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already. If you do not have that working yet, look at the Pd manual
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and the GEM FAQ. Also, it is assumed that you have a basic understanding
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of how to use Pd and the idea behind the data flow model. In other
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words, if I ask you to pass a message with 3 floats into an object, you
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would know what I mean.
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<p>The system requirements vary depending on your system and what you are
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trying to do. In general, you should have the most powerful computer
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available and the best graphics accelerator on the market. In reality,
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people have been doing some amazing work with a Pentium II and an <a href="http://www.nvidia.com">nVidia
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Riva TNT</a> or <a href="http://www.3dfx.com">3Dfx Voodoo2</a> card.
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If you are on an SGI, then everything from an O2 up seems to be okay.
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The biggest requirement is that you have some kind of OpenGL graphics accelerator.
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This means that a Matrox Millennium II will not run very quickly.
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<p>The other factor is what you are trying to do. Pushing real-time
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video around requires a fast bus, which really only exists on SGIs.
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Doing thousands of texture mapped polygons is great on a PC...if it is
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a constant texture. There are many issues which mean that there is
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no one answer to "Is this system good enough?". In general, you will
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have to try and see.
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<p>GEM is now maintained by <a href="http://www.iem.at/info/personal/jz.htm">IOhannes m zmölnig</a>.
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So any bug-reports and donations should go to him instead of Mark...
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<p><a href="index.html">[return]</a>
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<br>
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</body>
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</html>
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