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diff --git a/externals/gridflow/doc/introduction.html b/externals/gridflow/doc/introduction.html new file mode 100644 index 00000000..3dcda73f --- /dev/null +++ b/externals/gridflow/doc/introduction.html @@ -0,0 +1,105 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> +<html><head> + +<title>GridFlow 0.9.3 - Introduction</title><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<link rel="stylesheet" href="gridflow.css" type="text/css"></head> +<body leftmargin="0" topmargin="0" bgcolor="#ffffff" marginheight="0" marginwidth="0"> +<table width="100%" cellspacing="10"><tr><td> +<table width="100%" border="0" cellspacing="0" cellpadding="0"><tr> + <td> <img src="images/header1.png" alt="GridFlow" width="384" height="64"></td> + <td width="100%"><img src="images/header2.png" alt="GridFlow" width="100%" height="64"></td> + <td> <img src="images/header3.png" alt="GridFlow" width="32" height="64"></td> +</table> +</td></tr></table> +<blockquote> + +<br> +<table border="0" cellspacing="5" width="100%"> + <tr><td bgcolor="black"><img src="images/black.png" height="2" width="1"></td></tr> + + <tr><td height="16"> + <h4>GridFlow 0.9.3 - introduction</h4> + </td></tr> + <tr> + <td width="82%"> + + <p> The philosophy that guides PureData is a simple but powerful one: + the software must first provide the user with generic tools + rather than imposing pre-cooked effects. In other words the user + should have total freedom. + + </p><p> GridFlow follows that philosophy: it first defines elementary + mathematical operations. Those can in turn be used as simple + visual effects or be combined to produce more complex effects. + + </p><p> The strategy followed by most video plugins for PureData and MAX/MSP, is + to provide the user first with constructs for manipulating video + streams at a fairly high level. The strategy put forward by GridFlow + is different. + + </p><p> It can be said that in all those video plugins there are three layers: + the first, the low level, is not accessible to non-programmers (and fairly + difficult of access even to programmers); the second, mathematical, where + one needs not to be a C++ programmer, but still requires a good + understanding of how numbers and pixels and colours and geometry work; and + a third level that looks more like the software an artist would like to + use. + + </p><p> In other video plugins there is a fairly low emphasis on the second + layer. In GridFlow that layer is very strong and opens many possibilities. + Even though the third layer in GridFlow is not as developed as it could, + the second layer may be used to produce third-layer object classes much + more quickly. + + </p><p> GridFlow provides a unifying view of multimedia information. Several + kinds of data -- raster graphics in any number of channels, coordinate + transforms, matrices, vectors -- may all be represented by <b>Grids</b> + (also known as multi-dimensional arrays). Grids exist in several ways: they + are usually streamed from object to object, but they can also be stored in + memory, stored into a file, sent through the network. + + </p><p> In short, GridFlow is a whole new world of possibilities for + the multimedia artist and programmer. + + </p><p>- matju</p><br> +</td></tr> + + <tr><td bgcolor="black"><img src="images/black.png" height="2" width="1"></td></tr> + <tr> + <td width="82%"> + + <p> Here is an example of how things work in GridFlow. (if you want more + information, consult the rest of this manual) + + </p><p> A picture is a three-dimensional Grid:<br> + <b>0</b> : rows <br> + <b>1</b> : columns <br> + <b>2</b> : channels <br> + + </p><p> + Pictures come in all sorts of heights and widths. The channels, however, + are more limited in number. Usually it's three: Red, Green, Blue. + + </p><p> A coordinate transform, when specified pixel by pixel, may be a + three-dimensional Grid in which the two "channels" are Y and X, + representing row-and-column positions in a separate picture. + + </p><p> Other shapes of grids could be designed to represent various things; + for example, configuration for blur effects. Grids could be useful for + things not directly related to raster pictures (e.g. sound recordings). + Those are all kinds of things you could actually develop <i>within</i> the + PureData / GridFlow framework. You don't need to wait for me. +</p></td> + + <tr><td bgcolor="black"><img src="images/black.png" height="2" width="1"></td></tr> + + <tr><td> + <p><font size="-1">GridFlow 0.9.3 Documentation<br> + by Mathieu Bouchard <a href="mailto:matju@artengine.ca">matju@artengine.ca</a> + and<br> + Alexandre Castonguay <a href="mailto:acastonguay@artengine.ca">acastonguay@artengine.ca</a></font></p> + </td> + </tr> + +</table> +</body></html>
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