diff options
Diffstat (limited to 'html/en/drv/dxf.html')
| -rw-r--r-- | html/en/drv/dxf.html | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/html/en/drv/dxf.html b/html/en/drv/dxf.html new file mode 100644 index 0000000..95274ee --- /dev/null +++ b/html/en/drv/dxf.html @@ -0,0 +1,180 @@ +<!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_DXF</title> +<link rel="stylesheet" type="text/css" href="../../style.css"> +</head> + +<body> + +<h2>CD_DXF - AutoCAD Image Exchange File Driver (cddxf.h)</h2> + + <p>This driver allows generating an AutoCAD image exchange file. The file name usually has an extension .DXF. This + driver supports only AutoCAD version 10.0 or later. The format's copyrights are property of + <a href="http://www.autodesk.com" target="_top">Autodesk</a>.</p> + +<h3>Use</h3> + + <p>The file is created and opened by calling function <font face="Courier"> + <a href="../func/init.html#cdCreateCanvas"><strong>cdCreateCanvas</strong></a>(CD_DXF, + Data)</font>, in which <font face="Courier">Data</font> contains the file name and canvas dimensions. This function + opens the file and writes its header. Then, other functions in the CD library can be called as usual. The + <font face="Courier">Data</font> parameter string has 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 given in real values and are used only by + <a href="../func/coordinates.html#cdGetCanvasSize"><font face="Courier"><strong> + cdCanvasGetSize</strong></font></a><font face="Courier"><strong> </strong></font>and in pixel-millimeter conversion. </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 close the DXF file properly.</p> + <p><b>Images </b>- The DXF format does not support client or server images and works with an indexed-color format + (color quality is limited to 256 fixed colors). </p> + <p><strong>Precision of Coordinates -</strong> The primitives use coordinates in real numbers.</p> + <p><strong>Layers -</strong> The format can work with several layers. It is necessary to draw the primitives of layer + '0' first, then layer '1' and so on. Use functions + <a href="../func/control.html#cdFlush"><font face="Courier"><strong>Flush</strong></font></a> + to change the current layer.</p> + +<h3>Behavior of Functions</h3> +<h4>Control </h4> +<ul> + <li><a href="../func/control.html#cdFlush"><font face="Courier"><strong>Flush</strong></font></a>: + changes the current layer (the initial layer is '0', followed by '1' and so on). </li> + <li><a href="../func/control.html#cdClear"><font face="Courier"><strong>Clear</strong></font></a>: + does nothing.</li> + <li><a href="../func/other.html#cdPlay"><font face="Courier"><strong>Play</strong></font></a>: + does nothing, returns <font face="Courier">CD_ERROR</font>. </li> +</ul> +<h4>Coordinate System and Clipping</h4> +<ul> + <li><a href="../func/clipping.html#cdClip"><font face="Courier"><strong>Clip</strong></font></a>: + does nothing (no clipping function is supported), returns <font face="Courier">CD_CLIPOFF</font>.</li> + <li><a href="../func/coordinates.html#cdUpdateYAxis"><font face="Courier"> + <strong>UpdateYAxis</strong></font></a>: does nothing. Axis orientation is the same as in the CD library.</li> + <li><strong>Transformation Matrix</strong>: not supported.</li> +</ul> +<h4>Primitives</h4> +<ul> + <li><a href="../func/filled.html#cdBox"><font face="Courier"><strong>Box</strong></font></a>: + draws only the box's borders (no filling function is supported). Behaves like + <strong><font face="Courier">Rect</font></strong>.</li> + <li><a href="../func/filled.html#cdSector"><font face="Courier"><strong>Sector</strong></font></a>: + draws a "hollow" sector, that is, only its borders.</li> + <li><a href="../func/lines.html#cdBegin"><font face="Courier"><strong>Begin</strong></font></a>: + <font face="Courier"><strong><tt>CD_FILL</tt></strong></font> is mapped to <font face="Courier"><strong><tt> + CD_CLOSED_LINES</tt></strong></font>. if parameter <strong><tt>CD_CLIP</tt></strong> or <strong><tt>CD_BEZIER</tt></strong> + are specified, does nothing.</li> + <li><strong><font face="Courier"><a href="../func/filled.html#cdChord">Chord</a></font></strong>: + does nothing.</li> + <li>Floating point primitives are supported.</li> +</ul> +<h4>Attributes</h4> +<ul> + <li><a href="../func/filled.html#cdBackOpacity"><font face="Courier"><strong> + BackOpacity</strong></font></a>: does nothing, returns <font face="Courier">CD_TRANSPARENT</font>.</li> + <li><a href="../func/attributes.html#cdWriteMode"><font face="Courier"> + <strong> + WriteMode</strong></font></a>: does nothing, returns <font face="Courier">CD_REPLACE</font>.</li> + <li><a href="../func/filled.html#cdInteriorStyle"><font face="Courier"> + <strong> + InteriorStyle</strong></font></a>: does nothing (filling is not supported), returns 0.</li> + <li><a href="../func/filled.html#cdHatch"><font face="Courier"><strong>Hatch</strong></font></a>: + does nothing. </li> + <li><a href="../func/filled.html#cdFillMode"><font face="Courier"><strong> + FillMode</strong></font></a>: does nothing.</li> + <li><a href="../func/filled.html#cdLineCap"><font face="Courier"><strong> + LineCap</strong></font></a>: does nothing.</li> + <li><a href="../func/filled.html#cdLineJoin"><font face="Courier"><strong> + LineJoin</strong></font></a>: does nothing.</li> + <li><a href="../func/filled.html#cdStipple"><font face="Courier"><strong> + Stipple</strong></font></a>: does nothing.</li> + <li><a href="../func/filled.html#cdPattern"><font face="Courier"><strong> + Pattern</strong></font></a>: does nothing.</li> + <li><a href="../func/text.html#cdTextSize"><font face="Courier"><strong> + TextSize</strong></font></a>: returns a bounding box usually larger than the text (the computation is based on the + widest character).</li> + <li><a href="../func/text.html#cdTextOrientation"><font face="Courier"> + <strong> + TextOrientation</strong></font></a>: does nothing.</li> + <li><a href="../func/text.html#cdFont"><font face="Courier"><strong>Font</strong></font></a>: + italic styles correspond to the basic styles with an inclination of 15<sup>o</sup>. See the font mapping table for the + equivalence used to map fonts of the CD library into AutoCAD fonts. No + other fonts are supported.</li> +</ul> +<div align="center"> + <center> + <table border="1" cellpadding="5"> + <caption valign="top"><font size="4">Font Mapping</font></caption> + <tr> + <th>CD Fonts</th> + <th>AutoCAD Fonts</th> + </tr> + <tr> + <td><font face="Courier">S</font><span style="font-family: Courier">ystem</span></td> + <td><font face="Courier">STANDARD (sem arquivo)</font></td> + </tr> + <tr> + <td><font face="Courier">Courier</font></td> + <td><font face="Courier">ROMAN (romanc.shx)</font></td> + </tr> + <tr> + <td><font face="Courier">Courier + CD_BOLD</font></td> + <td><font face="Courier">ROMAN_BOLD (romant.shx)</font></td> + </tr> + <tr> + <td><font face="Courier">Times</font></td> + <td><font face="Courier">ROMANTIC (rom_____.pfb)</font></td> + </tr> + <tr> + <td><font face="Courier">Times + CD_BOLD</font></td> + <td><font face="Courier">ROMANTIC_BOLD (romb_____.pfb)</font></td> + </tr> + <tr> + <td><font face="Courier">Helvetica</font></td> + <td><font face="Courier">SANSSERIF (sas_____.pfb)</font></td> + </tr> + <tr> + <td><font face="Courier">Helvetica + CD_BOLD</font></td> + <td><font face="Courier">SANSSERIF_BOLD (sasb____.pfb)</font></td> + </tr> + </table> + </center> +</div> +<h4>Colors</h4> +<ul> + <li><a href="../func/attributes.html#cdForeground"><font face="Courier"> + <strong> + Foreground</strong></font></a>: indexes<font face="Courier"> long int *color</font> in the fixed palette + (AutoCAD uses a 256-color palette - for further detail, see AutoCAD's Reference Manual).</li> + <li><a href="../func/attributes.html#cdBackground"><font face="Courier"> + <strong> + Background</strong></font></a>: does nothing, returns <font face="Courier">CD_WHITE</font>.</li> + <li><a href="../func/color.html#cdGetColorPlanes"><font face="Courier"> + <strong> + GetColorPlanes</strong></font></a>: returns 8.</li> + <li><a href="../func/color.html#cdPalette"><font face="Courier"><strong>Palette</strong></font></a>: + does nothing (the palette is fixed). </li> +</ul> +<h4>Client Images</h4> +<ul> + <li>All functions do nothing.</li> +</ul> +<h4>Server Images </h4> +<ul> + <li>All functions do nothing.</li> +</ul> +<p> </p> + +</body> + +</html> |