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authorscuri <scuri>2009-12-02 20:30:55 +0000
committerscuri <scuri>2009-12-02 20:30:55 +0000
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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>&quot;<em>filename [widthxheight resolution]</em>&quot; or in C<em> &quot;<strong><tt>%s %gx%g %g</tt></strong>&quot;</em></pre>
+
+ <p>Only the parameter <font face="Courier">filename</font> is required. The filename must be inside double quotes (&quot;)
+ if it has spaces.<font face="Courier"> Width</font> and <font face="Courier">height</font> are provided in millimeters
+ (note the lowercase &quot;x&quot; 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
+ &quot;3.78 pixels/mm&quot; (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>: is simulated using
+ width and height to draw a rect.</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>