little_helpers/tikz/sketch-0.2.161/Doc/sketch/Internal-options.html

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  54 <h5 class="subsubsection">3.1.5.6 Internal options</h5>
  55
  56 <p>There are also <em>internal</em> options
  57 <a name="index-options_002c-internal-257"></a><a name="index-internal-options-258"></a>used only by <code>sketch</code> and not
  58 passed on to <code>PSTricks</code>.  These are summarized in the following
  59 table.
  60 <a name="index-cull-259"></a><a name="index-lay-260"></a><a name="index-split-261"></a>
  61    <p><table summary=""><tr align="left"><th valign="top">Key </th><th valign="top">Possible values </th><th valign="top">Description
  62 <br></th></tr><tr align="left"><td valign="top"><code>cull</code>
  63 </td><td valign="top"><code>true</code>, <code>false</code>
  64 </td><td valign="top">Turn culling of backfaces on and off respectively for this object.
  65 The default value is <code>true</code>.
  66 <br></td></tr><tr align="left"><td valign="top"><code>lay</code>
  67 </td><td valign="top"><code>over</code>, <code>in</code>, <code>under</code>
  68 </td><td valign="top">Force this object to be <code>under</code> or
  69 <code>over</code> all other objects in the depth sort
  70 <a name="index-depth-sort-262"></a>order created by the hidden surface algorithm.  The default value
  71 <code>over</code> guarantees that output due to the <code>special</code> will be
  72 visible.
  73 <br></td></tr><tr align="left"><td valign="top"><code>split</code>
  74 </td><td valign="top"><code>true</code>, <code>false</code>
  75 </td><td valign="top">Turn splitting of sweep-generated body polygons
  76 <a name="index-body-polygon-263"></a><a name="index-polygon_002c-body-264"></a>on and off respectively. See <a href="Sweeps.html#Sweeps">Sweeps</a>.  The default value <code>true</code>
  77 causes &ldquo;warped&rdquo; polygons to be split into triangles, which avoids
  78 mistakes by the hidden surface algorithm.
  79    <br></td></tr></table>
  80
  81 <h4 class="subsection">3.1.6 Point lists</h4>
  82
  83 <p><a name="index-point-list-265"></a><strong>Syntax:</strong>
  84 <pre class="example">     (<var>x1</var>,<var>y1</var>,<var>z1</var>)(<var>x2</var>,<var>y2</var>,<var>z2</var>)...
  85 </pre>
  86    <p class="noindent">A sequence of one or more points makes a point list, a feature
  87 common to all drawables.  Each of the point components is a scalar
  88 arithmetic expression.  Any point may have the z-component
  89 omitted; it will default to z=0.
  90
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