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Next: <a href="Uimenu-Properties.html#Uimenu-Properties" accesskey="n" rel="next">Uimenu Properties</a>, Previous: <a href="Surface-Properties.html#Surface-Properties" accesskey="p" rel="prev">Surface Properties</a>, Up: <a href="Graphics-Object-Properties.html#Graphics-Object-Properties" accesskey="u" rel="up">Graphics Object Properties</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Light-Properties-1"></a>
<h4 class="subsubsection">15.3.3.9 Light Properties</h4>
<a name="index-light-properties"></a>
<p>The <code>light</code> properties are:
</p>
<dl compact="compact">
<dd>
<a name="XREFlight_005f_005fmodified_005f_005f"></a><a name="index-light-_005f_005fmodified_005f_005f"></a>
</dd>
<dt><code>__modified__</code>: <code>"off"</code> | {<code>"on"</code>}</dt>
<dd>
<a name="XREFlightbeingdeleted"></a><a name="index-light-beingdeleted"></a>
</dd>
<dt><code>beingdeleted</code>: {<code>"off"</code>} | <code>"on"</code></dt>
<dd>
<a name="XREFlightbusyaction"></a><a name="index-light-busyaction"></a>
</dd>
<dt><code>busyaction</code>: <code>"cancel"</code> | {<code>"queue"</code>}</dt>
<dd>
<a name="XREFlightbuttondownfcn"></a><a name="index-light-buttondownfcn"></a>
</dd>
<dt><code>buttondownfcn</code>: string | function handle, def. <code>[](0x0)</code></dt>
<dd><p>For information on how to write graphics listener functions see <a href="Callbacks.html#Callbacks">Callbacks section<!-- /@w --></a>.
</p>
<a name="XREFlightchildren"></a><a name="index-light-children"></a>
</dd>
<dt><code>children</code> (read-only): vector of graphics handles, def. <code>[](0x1)</code></dt>
<dd><p><code>children</code> is unused.
</p>
<a name="XREFlightclipping"></a><a name="index-light-clipping"></a>
</dd>
<dt><code>clipping</code>: <code>"off"</code> | {<code>"on"</code>}</dt>
<dd><p>If <code>clipping</code> is <code>"on"</code>, the light is clipped in its parent axes limits.
</p>
<a name="XREFlightcolor"></a><a name="index-light-color"></a>
</dd>
<dt><code>color</code>: colorspec, def. <code>[1 1 1]</code></dt>
<dd><p>Color of the light source. See <a href="Colors.html#Colors">colorspec</a>.
</p>
<a name="XREFlightcreatefcn"></a><a name="index-light-createfcn"></a>
</dd>
<dt><code>createfcn</code>: string | function handle, def. <code>[](0x0)</code></dt>
<dd><p>Callback function executed immediately after light has been created. Function is set by using default property on root object, e.g., <code>set (0, "defaultlightcreatefcn", 'disp ("light created!")')</code>.
</p>
<p>For information on how to write graphics listener functions see <a href="Callbacks.html#Callbacks">Callbacks section<!-- /@w --></a>.
</p>
<a name="XREFlightdeletefcn"></a><a name="index-light-deletefcn"></a>
</dd>
<dt><code>deletefcn</code>: string | function handle, def. <code>[](0x0)</code></dt>
<dd><p>Callback function executed immediately before light is deleted.
</p>
<p>For information on how to write graphics listener functions see <a href="Callbacks.html#Callbacks">Callbacks section<!-- /@w --></a>.
</p>
<a name="XREFlighthandlevisibility"></a><a name="index-light-handlevisibility"></a>
</dd>
<dt><code>handlevisibility</code>: <code>"callback"</code> | <code>"off"</code> | {<code>"on"</code>}</dt>
<dd><p>If <code>handlevisibility</code> is <code>"off"</code>, the light’s handle is not visible in its parent’s "children" property.
</p>
<a name="XREFlighthittest"></a><a name="index-light-hittest"></a>
</dd>
<dt><code>hittest</code>: <code>"off"</code> | {<code>"on"</code>}</dt>
<dd>
<a name="XREFlightinterruptible"></a><a name="index-light-interruptible"></a>
</dd>
<dt><code>interruptible</code>: <code>"off"</code> | {<code>"on"</code>}</dt>
<dd>
<a name="XREFlightparent"></a><a name="index-light-parent"></a>
</dd>
<dt><code>parent</code>: graphics handle</dt>
<dd><p>Handle of the parent graphics object.
</p>
<a name="XREFlightposition"></a><a name="index-light-position"></a>
</dd>
<dt><code>position</code>: def. <code>[1 0 1]</code></dt>
<dd><p>Position of the light source.
</p>
<a name="XREFlightselected"></a><a name="index-light-selected"></a>
</dd>
<dt><code>selected</code>: {<code>"off"</code>} | <code>"on"</code></dt>
<dd>
<a name="XREFlightselectionhighlight"></a><a name="index-light-selectionhighlight"></a>
</dd>
<dt><code>selectionhighlight</code>: <code>"off"</code> | {<code>"on"</code>}</dt>
<dd>
<a name="XREFlightstyle"></a><a name="index-light-style"></a>
</dd>
<dt><code>style</code>: {<code>"infinite"</code>} | <code>"local"</code></dt>
<dd><p>This string defines whether the light emanates from a light source at infinite distance (<code>"infinite"</code>) or from a local point source (<code>"local"</code>).
</p>
<a name="XREFlighttag"></a><a name="index-light-tag"></a>
</dd>
<dt><code>tag</code>: string, def. <code>""</code></dt>
<dd><p>A user-defined string to label the graphics object.
</p>
<a name="XREFlighttype"></a><a name="index-light-type"></a>
</dd>
<dt><code>type</code> (read-only): string</dt>
<dd><p>Class name of the graphics object. <code>type</code> is always <code>"light"</code>
</p>
<a name="XREFlightuicontextmenu"></a><a name="index-light-uicontextmenu"></a>
</dd>
<dt><code>uicontextmenu</code>: graphics handle, def. <code>[](0x0)</code></dt>
<dd><p>Graphics handle of the uicontextmenu object that is currently associated to this light object.
</p>
<a name="XREFlightuserdata"></a><a name="index-light-userdata"></a>
</dd>
<dt><code>userdata</code>: Any Octave data, def. <code>[](0x0)</code></dt>
<dd><p>User-defined data to associate with the graphics object.
</p>
<a name="XREFlightvisible"></a><a name="index-light-visible"></a>
</dd>
<dt><code>visible</code>: <code>"off"</code> | {<code>"on"</code>}</dt>
<dd><p>If <code>visible</code> is <code>"off"</code>, the light is not rendered on screen.
</p>
</dd>
</dl>
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