<!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_METAFILE</title> <link rel="stylesheet" type="text/css" href="../../style.css"> </head> <body> <h2>CD_PICTURE - CD Picture (cdpicture.h)</h2> <p>This driver allows the creation of a CD Picture. It store primitives and attributes in memory that can be played and resized in any other driver. It does not includes clipping and WriteMode.</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_PICTURE, Data)</font>. The <font face="Courier">Data</font> parameter is a string that can contain the resolution in the following format:</p> <pre>"[resolution]" or in <em>C use "<strong><tt>%lg</tt></strong>"</em></pre> <p><font face="Courier">Resolution </font>is the number of pixels per millimeter; its default value is "3.78 pixels/mm" (96 DPI).</p> <p>The canvas size is automatically calculated to be the bounding box of all the primitives inside the picture.</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 release the picture memory.</p> <h3>Behavior of Functions</h3> <h4>Coordinate System and Clipping </h4> <ul> <li><a href="../func/other.html#cdPlay"> <font face="Courier"><strong>Play</strong></font></a>: implemented. </li> <li><a href="../func/coordinates.html#cdUpdateYAxis"><font face="Courier"> <strong>UpdateYAxis</strong></font></a>: does nothing.</li> <li><b><strong>Clipping</strong>:</b> not supported.</li> <li><strong>Transformation Matrix</strong>: not supported.</li> <li><a href="../func/coordinates.html#cdGetCanvasSize">cdGetCanvasSize</a>: returns the size of the bounding box that includes all primitives inside the picture.</li> </ul> <h4>Attributes</h4> <dir> <li><a href="../func/attributes.html#cdWriteMode"><font face="Courier"> <strong> WriteMode</strong></font></a>: does nothing.</li> <li><a href="../func/text.html#cdFontDim"><font face="Courier"><strong>FontDim</strong></font></a>: uses a size estimator, returning approximate values.</li> <li><a href="../func/text.html#cdTextSize"><font face="Courier"><strong> TextSize</strong></font></a>: uses a size estimator, returning approximate values.</li> </dir> <h4>Colors</h4> <ul> <li><a href="../func/color.html#cdGetColorPlanes"><font face="Courier"> <strong> GetColorPlanes</strong></font></a>: always returns 24.</li> </ul> <h4>Primitives</h4> <ul> <li>Floating point primitives are supported.</li> </ul> <h4>Client Images</h4> <ul> <li><a href="../func/client.html#cdGetImageRGB"><font face="Courier"><strong> GetImageRGB</strong></font></a>: does nothing.</li> </ul> <h4>Server Images</h4> <ul> <li>All functions do nothing.</li> </ul> </body> </html>