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<a href="VisionEgg-module.html">Package VisionEgg</a> ::
<a href="VisionEgg.SphereMap-module.html">Module SphereMap</a> ::
Class SphereGrating
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class SphereGrating</h1><span class="codelink"><a href="VisionEgg.SphereMap-pysrc.html#SphereGrating">source code</a></span><br /><br />
<pre class="base-tree">
object --+
|
<a href="VisionEgg.ClassWithParameters-class.html">ClassWithParameters</a> --+
|
<a href="VisionEgg.Core.Stimulus-class.html">Core.Stimulus</a> --+
|
<a href="VisionEgg.Gratings.LuminanceGratingCommon-class.html">Gratings.LuminanceGratingCommon</a> --+
|
<strong class="uidshort">SphereGrating</strong>
</pre>
<hr />
<pre class="literalblock">
Map 2D sinusoidal grating onto sphere.
Parameters
==========
bit_depth -- precision with which grating is calculated and sent to OpenGL (UnsignedInteger)
Inherited from VisionEgg.Gratings.LuminanceGratingCommon
Default: 8
check_texture_size -- (Boolean)
Default: True
contrast -- (Real)
Default: 1.0
grating_center_azimuth -- (Real)
Default: 0.0
grating_center_elevation -- (Real)
Default: 0.0
ignore_time -- (Boolean)
Default: False
lowpass_cutoff_cycles_per_texel -- helps prevent spatial aliasing (Real)
Default: 0.5
min_filter -- OpenGL filter enum (Integer)
Default: GL_LINEAR (9729)
num_samples -- (UnsignedInteger)
Default: 1024
on -- (Boolean)
Default: True
orientation -- (Real)
Default: 0.0
phase_at_t0 -- (Real)
Default: 0.0
radius -- (Real)
Default: 1.0
slices -- (UnsignedInteger)
Default: 30
spatial_freq_cpd -- (Real)
Default: 0.0277777777778
stacks -- (UnsignedInteger)
Default: 30
t0_time_sec_absolute -- (Real)
Default: (determined at runtime)
temporal_freq_hz -- (Real)
Default: 5.0
</pre><br /><br />
<!-- ==================== INSTANCE METHODS ==================== -->
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="VisionEgg.SphereMap.SphereGrating-class.html#__init__" class="summary-sig-name">__init__</a>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">**kw</span>)</span><br />
Instantiate and get ready to draw.</td>
<td align="right" valign="top">
<span class="codelink"><a href="VisionEgg.SphereMap-pysrc.html#SphereGrating.__init__">source code</a></span>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="VisionEgg.SphereMap.SphereGrating-class.html#draw" class="summary-sig-name">draw</a>(<span class="summary-sig-arg">self</span>)</span><br />
Redraw the scene on every frame.</td>
<td align="right" valign="top">
<span class="codelink"><a href="VisionEgg.SphereMap-pysrc.html#SphereGrating.draw">source code</a></span>
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<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code><a href="VisionEgg.Gratings.LuminanceGratingCommon-class.html">Gratings.LuminanceGratingCommon</a></code></b>:
<code><a href="VisionEgg.Gratings.LuminanceGratingCommon-class.html#calculate_bit_depth_dependencies">calculate_bit_depth_dependencies</a></code>
</p>
<p class="indent-wrapped-lines"><b>Inherited from <code><a href="VisionEgg.ClassWithParameters-class.html">ClassWithParameters</a></code></b>:
<code><a href="VisionEgg.ClassWithParameters-class.html#__getstate__">__getstate__</a></code>,
<code><a href="VisionEgg.ClassWithParameters-class.html#__setstate__">__setstate__</a></code>,
<code><a href="VisionEgg.ClassWithParameters-class.html#get_specified_type">get_specified_type</a></code>,
<code><a href="VisionEgg.ClassWithParameters-class.html#is_constant_parameter">is_constant_parameter</a></code>,
<code><a href="VisionEgg.ClassWithParameters-class.html#set">set</a></code>,
<code><a href="VisionEgg.ClassWithParameters-class.html#verify_parameters">verify_parameters</a></code>
</p>
<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__delattr__</code>,
<code>__getattribute__</code>,
<code>__hash__</code>,
<code>__new__</code>,
<code>__reduce__</code>,
<code>__reduce_ex__</code>,
<code>__repr__</code>,
<code>__setattr__</code>,
<code>__str__</code>
</p>
</td>
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<!-- ==================== CLASS VARIABLES ==================== -->
<a name="section-ClassVariables"></a>
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cellspacing="0" width="100%" bgcolor="white">
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<td align="left" colspan="2" class="table-header">
<span class="table-header">Class Variables</span></td>
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<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a href="VisionEgg.SphereMap.SphereGrating-class.html#parameters_and_defaults" class="summary-name">parameters_and_defaults</a> = <code title="{'on':(True, ve_types.Boolean), 'contrast':(1.0, ve_types.Real), 'spat\
ial_freq_cpd':(1.0/ 36.0, ve_types.Real), 'temporal_freq_hz':(5.0, ve_\
types.Real), 't0_time_sec_absolute':(None, ve_types.Real), 'ignore_tim\
e':(False, ve_types.Boolean), 'phase_at_t0':(0.0, ve_types.Real), 'ori\
entation':(0.0, ve_types.Real), 'grating_center_azimuth':(0.0, ve_type\
s.Real), 'grating_center_elevation':(0.0, ve_types.Real), 'check_textu\
re_size':(True, ve_types.Boolean), 'lowpass_cutoff_cycles_per_texel':(\
0.5, ve_types.Real, 'helps prevent spatial aliasing'), 'min_filter':(g\
...">{'on':(True, ve_types.Boolean), 'con<code class="variable-ellipsis">...</code></code>
</td>
</tr>
<tr>
<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code><a href="VisionEgg.ClassWithParameters-class.html">ClassWithParameters</a></code></b>:
<code><a href="VisionEgg.ClassWithParameters-class.html#__safe_for_unpickling__">__safe_for_unpickling__</a></code>,
<code><a href="VisionEgg.ClassWithParameters-class.html#constant_parameters_and_defaults">constant_parameters_and_defaults</a></code>
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<!-- ==================== PROPERTIES ==================== -->
<a name="section-Properties"></a>
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<span class="table-header">Properties</span></td>
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<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__class__</code>
</p>
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<!-- ==================== METHOD DETAILS ==================== -->
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<span class="table-header">Method Details</span></td>
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<a name="__init__"></a>
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<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
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<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">__init__</span>(<span class="sig-arg">self</span>,
<span class="sig-arg">**kw</span>)</span>
<br /><em class="fname">(Constructor)</em>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="VisionEgg.SphereMap-pysrc.html#SphereGrating.__init__">source code</a></span>
</td>
</table>
<pre class="literalblock">
Instantiate and get ready to draw.
Set parameter values and create anything needed to draw the
stimulus including OpenGL state variables such display lists
and texture objects.
</pre>
<dl class="fields">
<dt>Overrides:
<a href="VisionEgg.Core.Stimulus-class.html#__init__">Core.Stimulus.__init__</a>
<dd><em class="note">(inherited documentation)</em></dd>
</dt>
</dl>
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<a name="draw"></a>
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cellspacing="0" width="100%" bgcolor="white">
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<h3 class="epydoc"><span class="sig"><span class="sig-name">draw</span>(<span class="sig-arg">self</span>)</span>
</h3>
</td><td align="right" valign="top"
><span class="codelink"><a href="VisionEgg.SphereMap-pysrc.html#SphereGrating.draw">source code</a></span>
</td>
</table>
<pre class="literalblock">
Redraw the scene on every frame.
</pre>
<dl class="fields">
<dt>Overrides:
<a href="VisionEgg.Core.Stimulus-class.html#draw">Core.Stimulus.draw</a>
</dt>
</dl>
</td></tr></table>
</div>
<br />
<!-- ==================== CLASS VARIABLE DETAILS ==================== -->
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cellspacing="0" width="100%" bgcolor="white">
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<span class="table-header">Class Variable Details</span></td>
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</table>
<a name="parameters_and_defaults"></a>
<div>
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<tr><td>
<h3 class="epydoc">parameters_and_defaults</h3>
<dl class="fields">
</dl>
<dl class="fields">
<dt>Value:</dt>
<dd><table><tr><td><pre class="variable">
{'on':(True, ve_types.Boolean), 'contrast':(1.0, ve_types.Real), 'spat<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
ial_freq_cpd':(1.0/ 36.0, ve_types.Real), 'temporal_freq_hz':(5.0, ve_<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
types.Real), 't0_time_sec_absolute':(None, ve_types.Real), 'ignore_tim<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
e':(False, ve_types.Boolean), 'phase_at_t0':(0.0, ve_types.Real), 'ori<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
entation':(0.0, ve_types.Real), 'grating_center_azimuth':(0.0, ve_type<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
s.Real), 'grating_center_elevation':(0.0, ve_types.Real), 'check_textu<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
re_size':(True, ve_types.Boolean), 'lowpass_cutoff_cycles_per_texel':(<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
0.5, ve_types.Real, 'helps prevent spatial aliasing'), 'min_filter':(g<span class="variable-linewrap"><img src="crarr.png" alt="\" /></span>
<code class="variable-ellipsis">...</code>
</pre></td></tr></table>
</dd>
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