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<!doctype HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<meta http-equiv="Content-Language" content="en-us">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>CD_SVG</title>
<link rel="stylesheet" type="text/css" href="../../style.css">
</head>
<body>
<h2 style="text-align: left">CD_SVG - CD Scalable Vector Graphics Driver (cdsvg.h)</h2>
<p>This driver allows the generation of a SVG file, a modularized language for
describing two-dimensional vector and mixed vector/raster graphics in XML. The
<a href="http://www.w3.org/TR/SVG/">SVG specification</a> is an open standard
that has been under development by the <a href="http://www.w3.org/">World Wide
Web Consortium</a> (W3C) since 1999.</p>
<h3>Use</h3>
<p>The file is created by calling function <font face="Courier">
<a href="../func/init.html#cdCreateCanvas"><strong>cdCreateCanvas</strong></a>(CD_SVG,
Data)</font>. The <font face="Courier">Data</font> parameter is a string that must contain the filename and the canvas
dimensions, in the following format:</p>
<pre>"<em>filename [widthxheight resolution]</em>" or in C<em> "<strong><tt>%s %gx%g %g</tt></strong>"</em></pre>
<p>Only the parameter <font face="Courier">filename</font> is required. The filename must be inside double quotes (")
if it has spaces.<font face="Courier"> Width</font> and <font face="Courier">height</font> are provided in millimeters
(note the lowercase "x" between them), and their default value in pixels is <font face="Courier">INT_MAX</font> for
both dimensions. <font face="Courier">Resolution </font>is the number of pixels per millimeter; its default value is
"3.78 pixels/mm" (96 DPI). <font face="Courier">Width</font>, <font face="Courier">height</font> and
<font face="Courier">resolution</font> are real values.</p>
<p>Any amount of such canvases may exist simultaneously. It is important to note that a call to function
<a href="../func/init.html#cdKillCanvas"><font face="Courier"><strong>
cdKillCanvas</strong></font></a> is required to <b>close</b> the file properly.</p>
<h3>Behavior of Functions</h3>
<h4>Control</h4>
<dir>
<li><a href="http://www.tecgraf.puc-rio.br/cd/en/func/other.html#cdPlay">
<font face="Courier"><strong>Play</strong></font></a>: does nothing, returns
<font face="Courier">CD_ERROR</font>.</li>
<li><a href="http://www.tecgraf.puc-rio.br/cd/en/func/control.html#cdClear">
<font face="Courier"><strong>Clear</strong></font></a>: does nothing.</li>
</dir>
<h4>Coordinate System and Clipping </h4>
<dir>
<li><a href="../func/coordinates.html#cdUpdateYAxis"><font face="Courier">
<strong>UpdateYAxis</strong></font></a>: does nothing.</li>
<li><b>Complex Regions</b>: not supported.</li>
</dir>
<h4>Attributes</h4>
<dir>
<li><a href="http://www.tecgraf.puc-rio.br/cd/en/func/text.html#cdFontDim">
<font face="Courier"><strong>FontDim</strong></font></a>: is simulated.</li>
<li><a href="http://www.tecgraf.puc-rio.br/cd/en/func/text.html#cdTextSize">
<font face="Courier"><strong>TextSize</strong></font></a>: is simulated.</li>
<li>
<a href="http://www.tecgraf.puc-rio.br/cd/en/func/attributes.html#cdWriteMode">
<font face="Courier"><strong>WriteMode</strong></font></a>: does nothing,
returns <font face="Courier">CD_REPLACE</font>.</li>
</dir>
<h4>Colors</h4>
<dir>
<li><a href="../func/color.html#cdGetColorPlanes"><font face="Courier">
<strong>
GetColorPlanes</strong></font></a>: always returns 24.</li>
<li><a href="http://www.tecgraf.puc-rio.br/cd/en/func/color.html#cdPalette">
<font face="Courier"><strong>Palette</strong></font></a>: does nothing.</li>
</dir>
<h4>Primitives</h4>
<dir>
<li><font face="Courier"><strong>
<a href="http://www.tecgraf.puc-rio.br/cd/en/func/marks.html#cdPixel">Pixel</a></strong></font>:
does not exist in SVG, is simulated using a circle with radius=0.1.</li>
<li>Floating point primitives are supported.</li>
</dir>
<h4>Client Images</h4>
<dir>
<li><a href="../func/client.html#cdGetImageRGB"><font face="Courier"><strong>
GetImageRGB</strong></font></a>: does nothing.</li>
</dir>
<h4>Server Images</h4>
<dir>
<li>All functions do nothing.</li>
</dir>
</body>
</html>
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