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<h3 class="section">3.4 Loading Objects Into Geomview</h3>
<p>There are several ways to load an object into Geomview.
<dl>
<dt>the <em>Files</em> panel<dd>If you click the <em>Load</em> button in Geomview's <em>Main</em> panel,
the <em>Files</em> panel will appear.
<div class="float">
<a name="figmyfilelist"></a><img src="figs/myfilelist.png" alt="figs/myfilelist.png">
<p><strong class="float-caption">Figure 3.2: The Files Panel.</strong></p></div>
This panel lets you select a file from a variety of directories.
The top of the panel is a standard Motif file browser. Below this is
a list of directories on Geomview's standard search path; click on one
of these to browse files in that directory.
<p>To select a file, double-click on its name in the browser at upper right,
or click on its name and press the <Enter> key, or type the file's name
into the text box at the bottom of the browser and press <Enter>.
<p>If the selected file contains OOGL geometric data, it will be added to the
geomview <em>Targets</em> browser. If it contains GCL commands instead,
the file will be interpreted. See <a href="GCL.html#GCL">GCL</a>.
<p>When the <em>Files</em> panel first appears, the directory selected in the
directory browser is the current directory — the one from which you
invoked Geomview. The file browser shows <em>all</em> the files in this
directory, including ones that are not Geomview files. If you try to
load a file that doesn't contain either an OOGL object or Geomview
commands, Geomview will print out an error message.
<p>The directory browser also lists a second and third directory in
addition to the current directory. The second one, which ends in
<samp><span class="file">data/geom</span></samp>, is the Geomview example data directory. This contains
a wide variety of sample objects. It also contains several
subdirectories. In particular, the <samp><span class="file">hyperbolic</span></samp> and
<samp><span class="file">spherical</span></samp> subdirectories have sample hyperbolic and spherical
objects, respectively. Directory entries in the browser look just like
file entries; to view a subdirectory, click on it.
<p>The third directory shown in the directory browser, which ends in
<samp><span class="file">geom</span></samp>, contains several subdirectories with other Geomview files
in them. These are used less frequently than the ones in the
<samp><span class="file">data/geom</span></samp> directory.
<p>You can change the list of directories shown the <em>Files</em>
panel's directory browser by using the <code>set-load-path</code> command;
see <a href="set_002dload_002dpath.html#set_002dload_002dpath"><code>(set-load-path ...)</code></a>.
<br><dt>the <kbd><</kbd> keyboard shortcut:<dd>If you type <kbd><</kbd> in any Geomview window, the <em>Load</em> panel will
appear. This is a small version of the <em>Files</em> panel; it contains
a text field in which you can enter the name of a file to load (or a
GCL command surrounded by parentheses). After typing the name of the file
to load, type <kbd><Enter></kbd>; Geomview will
load the file as if you had loaded it with the <em>Add</em> button in
the <em>Files</em> panel. If, after bringing up the small load panel
with <kbd><</kbd>, you decide you want to use the larger <em>Files</em> panel
after all, press the <em>File Browser</em> button.
<div class="float">
<a name="figloadpanel"></a><img src="figs/load.png" alt="figs/load.png">
<p><strong class="float-caption">Figure 3.3: The Load Panel.</strong></p></div>
<br><dt>geometry loading commands:<dd>The <code>load</code>, <code>geometry</code>, <code>new-geometry</code>, and <code>read</code>
GCL commands allow you to load an object into Geomview;
See <a href="GCL.html#GCL">GCL</a>. See <a href="load.html#load"><code>(load ...)</code></a>. See <a href="new_002dgeometry.html#new_002dgeometry"><code>(new-geometry ...)</code></a>. See <a href="read.html#read"><code>(read ...)</code></a>.
</dl>
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