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<h1>vtkGenericCellTessellator Class Reference</h1><!-- doxytag: class="vtkGenericCellTessellator" --><!-- doxytag: inherits="vtkObject" --><code>#include <<a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>></code>
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Inheritance diagram for vtkGenericCellTessellator:</div>
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Collaboration diagram for vtkGenericCellTessellator:</div>
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<a href="a10016.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
helper class to perform cell tessellation
<p>
<a class="el" href="a00584.html" title="helper class to perform cell tessellation">vtkGenericCellTessellator</a> is a helper class to perform adaptive tessellation of particular cell topologies. The major purpose for this class is to transform higher-order cell types (e.g., higher-order finite elements) into linear cells that can then be easily visualized by VTK. This class works in conjunction with the <a class="el" href="a00590.html" title="defines dataset interface">vtkGenericDataSet</a> and <a class="el" href="a00579.html" title="defines cell interface">vtkGenericAdaptorCell</a> classes.<p>
This algorithm is based on edge subdivision. An error metric along each edge is evaluated, and if the error is greater than some tolerance, the edge is subdivided (as well as all connected 2D and 3D cells). The process repeats until the error metric is satisfied.<p>
A significant issue addressed by this algorithm is to insure <a class="el" href="a00012.html">face</a> compatibility across neigboring cells. That is, diagonals due to <a class="el" href="a00012.html">face</a> triangulation must match to insure that the mesh is compatible. The algorithm employs a precomputed table to accelerate the tessellation process. The table was generated with the help of <a class="el" href="a01128.html" title="helper class to generate triangulations">vtkOrderedTriangulator</a>; the basic idea is that the choice of diagonal is made by considering the relative value of the point ids.
<p>Definition at line <a class="el" href="a04045.html#l00056">56</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <a class="el" href="a01084.html">vtkObject</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#0898ed1242ee29ed687f67c14893118d">Superclass</a></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#a903e89d9292c5d681456cc922896e8d">GetClassName</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#6d32492f1ca676f25b2ae561994c1783">IsA</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#6200a870c0c8c2cd586f95ae3014635b">PrintSelf</a> (ostream &os, <a class="el" href="a00869.html">vtkIndent</a> indent)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#2b482b5e0f9d56e036255151e461fbaa">Initialize</a> (<a class="el" href="a00590.html">vtkGenericDataSet</a> *ds)=0</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#a1a1c1b4f4aff224047fdc6bb18745f9">InitErrorMetrics</a> (<a class="el" href="a00590.html">vtkGenericDataSet</a> *ds)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#e674dc1f7493725b14ba9cffc07b6587">GetMaxErrors</a> (double *errors)</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#77bc23b19420a36c4bf1439f45f242c0">TessellateFace</a> (<a class="el" href="a00579.html">vtkGenericAdaptorCell</a> *cell, <a class="el" href="a00581.html">vtkGenericAttributeCollection</a> *att, <a class="el" href="a02149.html#20bd6b6dedfe1bbb096c50354d52cc7e">vtkIdType</a> index, <a class="el" href="a00436.html">vtkDoubleArray</a> *points, <a class="el" href="a00242.html">vtkCellArray</a> *cellArray, <a class="el" href="a01242.html">vtkPointData</a> *internalPd)=0</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#7891af32f6e8241b1d9ccda47d4aa2db">Tessellate</a> (<a class="el" href="a00579.html">vtkGenericAdaptorCell</a> *cell, <a class="el" href="a00581.html">vtkGenericAttributeCollection</a> *att, <a class="el" href="a00436.html">vtkDoubleArray</a> *points, <a class="el" href="a00242.html">vtkCellArray</a> *cellArray, <a class="el" href="a01242.html">vtkPointData</a> *internalPd)=0</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#9178a54673de685904adf6d18bddade0">Triangulate</a> (<a class="el" href="a00579.html">vtkGenericAdaptorCell</a> *cell, <a class="el" href="a00581.html">vtkGenericAttributeCollection</a> *att, <a class="el" href="a00436.html">vtkDoubleArray</a> *points, <a class="el" href="a00242.html">vtkCellArray</a> *cellArray, <a class="el" href="a01242.html">vtkPointData</a> *internalPd)=0</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#65eb3514ac9636d16bb71fa1df055c1c">SetErrorMetrics</a> (<a class="el" href="a00285.html">vtkCollection</a> *someErrorMetrics)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="a00285.html">vtkCollection</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#076045fdd511848e56aa56004974045a">GetErrorMetrics</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#ddc8cfa14b456c36451e619d121d25a0">GetMeasurement</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#da29e9f4b0124e4551a95577c8728c06">SetMeasurement</a> (int)</td></tr>
<tr><td colspan="2"><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#44cb1305988c217eb169f69a6be7b24e">IsTypeOf</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <a class="el" href="a00584.html">vtkGenericCellTessellator</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#3fd3ae7321324630039e6c35bdf49c46">SafeDownCast</a> (<a class="el" href="a01084.html">vtkObject</a> *o)</td></tr>
<tr><td colspan="2"><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#27df2d5bc4b50f821d6ae2d288fa636a">vtkGenericCellTessellator</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#1964e738b1f66935783841493a55b4b8">~vtkGenericCellTessellator</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#c80bf6fa3abd5774bb05adea039701dd">ResetMaxErrors</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#3a47cc6a88984040e8f996caab6dae83">SetGenericCell</a> (<a class="el" href="a00579.html">vtkGenericAdaptorCell</a> *cell)</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#32a129872067548b781e73ac67515006">RequiresEdgeSubdivision</a> (double *left, double *mid, double *right, double alpha)</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#83480e4736f1b648f2b5d0798232e5fa">UpdateMaxError</a> (double *leftPoint, double *midPoint, double *rightPoint, double alpha)</td></tr>
<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00285.html">vtkCollection</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#b004d67351ac2efe067c83da944bdedf">ErrorMetrics</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="a00590.html">vtkGenericDataSet</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#8f5bcb8e1e1fbda890c4e59b0983b498">DataSet</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#7be2d5b7f84159e26e7df1089dc3d6ec">Measurement</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">double * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#41015a376e693de37f8ad43512abb141">MaxErrors</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00584.html#3b3d934f0008e2b088da0ae52d391547">MaxErrorsCapacity</a></td></tr>
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<hr><h2>Member Typedef Documentation</h2>
<a class="anchor" name="0898ed1242ee29ed687f67c14893118d"></a><!-- doxytag: member="vtkGenericCellTessellator::Superclass" ref="0898ed1242ee29ed687f67c14893118d" args="" -->
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<td class="memname">typedef <a class="el" href="a01084.html">vtkObject</a> <a class="el" href="a01084.html">vtkGenericCellTessellator::Superclass</a> </td>
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<p>Reimplemented from <a class="el" href="a01084.html#11429dee69f4b562e03e07b453dae9b5">vtkObject</a>.</p>
<p>Reimplemented in <a class="el" href="a01546.html#5b54125c5890c22ec24a9e36feb0bc81">vtkSimpleCellTessellator</a>.</p>
<p>Definition at line <a class="el" href="a04045.html#l00059">59</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="27df2d5bc4b50f821d6ae2d288fa636a"></a><!-- doxytag: member="vtkGenericCellTessellator::vtkGenericCellTessellator" ref="27df2d5bc4b50f821d6ae2d288fa636a" args="()" -->
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<td class="memname">vtkGenericCellTessellator::vtkGenericCellTessellator </td>
<td>(</td>
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<td><code> [protected]</code></td>
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<a class="anchor" name="1964e738b1f66935783841493a55b4b8"></a><!-- doxytag: member="vtkGenericCellTessellator::~vtkGenericCellTessellator" ref="1964e738b1f66935783841493a55b4b8" args="()" -->
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<td class="memname">vtkGenericCellTessellator::~vtkGenericCellTessellator </td>
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<td class="paramname"> </td>
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<td><code> [protected]</code></td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a903e89d9292c5d681456cc922896e8d"></a><!-- doxytag: member="vtkGenericCellTessellator::GetClassName" ref="a903e89d9292c5d681456cc922896e8d" args="()" -->
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<td class="memname">virtual const char* vtkGenericCellTessellator::GetClassName </td>
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<td><code> [virtual]</code></td>
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<p>Reimplemented from <a class="el" href="a01084.html#d95975c85c2896ea32ff4cf1f8de0886">vtkObject</a>.</p>
<p>Reimplemented in <a class="el" href="a01546.html#73034af63165758c9d14cfda9733f2d5">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="44cb1305988c217eb169f69a6be7b24e"></a><!-- doxytag: member="vtkGenericCellTessellator::IsTypeOf" ref="44cb1305988c217eb169f69a6be7b24e" args="(const char *type)" -->
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<td class="memname">static int vtkGenericCellTessellator::IsTypeOf </td>
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Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
<p>Reimplemented from <a class="el" href="a01084.html#e9548a248bce0f02f73bbcccd0a9489e">vtkObject</a>.</p>
<p>Reimplemented in <a class="el" href="a01546.html#eb60e720dd58d7ee8f76570d6ce3a7da">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="6d32492f1ca676f25b2ae561994c1783"></a><!-- doxytag: member="vtkGenericCellTessellator::IsA" ref="6d32492f1ca676f25b2ae561994c1783" args="(const char *type)" -->
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<td class="memname">virtual int vtkGenericCellTessellator::IsA </td>
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Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.
<p>Reimplemented from <a class="el" href="a01084.html#831e57b04e46827a7098aa81abadee69">vtkObject</a>.</p>
<p>Reimplemented in <a class="el" href="a01546.html#b0ecaa0b7eecbd228b29fbb5a530bce0">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="3fd3ae7321324630039e6c35bdf49c46"></a><!-- doxytag: member="vtkGenericCellTessellator::SafeDownCast" ref="3fd3ae7321324630039e6c35bdf49c46" args="(vtkObject *o)" -->
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<td class="memname">static <a class="el" href="a00584.html">vtkGenericCellTessellator</a>* vtkGenericCellTessellator::SafeDownCast </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a01084.html">vtkObject</a> * </td>
<td class="paramname"> <em>o</em> </td>
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<td><code> [static]</code></td>
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<p>Reimplemented from <a class="el" href="a01084.html#bb9351f076544c427ee91229dce83abe">vtkObject</a>.</p>
<p>Reimplemented in <a class="el" href="a01546.html#4a7f3ec9567378242c03a7f37f7f74ac">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="6200a870c0c8c2cd586f95ae3014635b"></a><!-- doxytag: member="vtkGenericCellTessellator::PrintSelf" ref="6200a870c0c8c2cd586f95ae3014635b" args="(ostream &os, vtkIndent indent)" -->
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<td class="memname">void vtkGenericCellTessellator::PrintSelf </td>
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<td>)</td>
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use <a class="el" href="a01085.html#edadf6378465fd81c2592ef64262e2a5">Print()</a> instead) but used in the hierarchical print process to combine the output of several classes.
<p>Reimplemented from <a class="el" href="a01084.html#bf3dbb4154289b56a12483eee3866263">vtkObject</a>.</p>
<p>Reimplemented in <a class="el" href="a01546.html#ccaf040e3abd8e198ffab51fe17a3252">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="77bc23b19420a36c4bf1439f45f242c0"></a><!-- doxytag: member="vtkGenericCellTessellator::TessellateFace" ref="77bc23b19420a36c4bf1439f45f242c0" args="(vtkGenericAdaptorCell *cell, vtkGenericAttributeCollection *att, vtkIdType index, vtkDoubleArray *points, vtkCellArray *cellArray, vtkPointData *internalPd)=0" -->
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<td class="memname">virtual void vtkGenericCellTessellator::TessellateFace </td>
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<td class="paramtype"><a class="el" href="a00579.html">vtkGenericAdaptorCell</a> * </td>
<td class="paramname"> <em>cell</em>, </td>
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<td class="paramtype"><a class="el" href="a00581.html">vtkGenericAttributeCollection</a> * </td>
<td class="paramname"> <em>att</em>, </td>
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<td class="paramtype"><a class="el" href="a02149.html#20bd6b6dedfe1bbb096c50354d52cc7e">vtkIdType</a> </td>
<td class="paramname"> <em>index</em>, </td>
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<td class="paramtype"><a class="el" href="a00436.html">vtkDoubleArray</a> * </td>
<td class="paramname"> <em>points</em>, </td>
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<td class="paramtype"><a class="el" href="a00242.html">vtkCellArray</a> * </td>
<td class="paramname"> <em>cellArray</em>, </td>
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<td class="paramtype"><a class="el" href="a01242.html">vtkPointData</a> * </td>
<td class="paramname"> <em>internalPd</em></td><td> </td>
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<td></td><td></td><td><code> [pure virtual]</code></td>
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Tessellate a <a class="el" href="a00012.html">face</a> of a 3D `cell'. The <a class="el" href="a00012.html">face</a> is specified by the index value. The result is a set of smaller linear triangles in `cellArray' with `points' and point data `internalPd'. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>cell_exists: cell!=0 <p>
valid_dimension: cell->GetDimension()==3 <p>
valid_index_range: (index>=0) && (index<cell->GetNumberOfBoundaries(2)) <p>
att_exists: att!=0 <p>
points_exists: points!=0 <p>
cellArray_exists: cellArray!=0 <p>
internalPd_exists: internalPd!=0 </dd></dl>
<p>Implemented in <a class="el" href="a01546.html#41335532063be8afabe6c590bf1025f5">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="7891af32f6e8241b1d9ccda47d4aa2db"></a><!-- doxytag: member="vtkGenericCellTessellator::Tessellate" ref="7891af32f6e8241b1d9ccda47d4aa2db" args="(vtkGenericAdaptorCell *cell, vtkGenericAttributeCollection *att, vtkDoubleArray *points, vtkCellArray *cellArray, vtkPointData *internalPd)=0" -->
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<td class="memname">virtual void vtkGenericCellTessellator::Tessellate </td>
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<td class="paramtype"><a class="el" href="a00579.html">vtkGenericAdaptorCell</a> * </td>
<td class="paramname"> <em>cell</em>, </td>
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<td class="paramtype"><a class="el" href="a00581.html">vtkGenericAttributeCollection</a> * </td>
<td class="paramname"> <em>att</em>, </td>
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<td class="paramtype"><a class="el" href="a00436.html">vtkDoubleArray</a> * </td>
<td class="paramname"> <em>points</em>, </td>
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<td class="paramtype"><a class="el" href="a00242.html">vtkCellArray</a> * </td>
<td class="paramname"> <em>cellArray</em>, </td>
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<td class="paramname"> <em>internalPd</em></td><td> </td>
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Tessellate a 3D `cell'. The result is a set of smaller linear tetrahedra in `cellArray' with `points' and point data `internalPd'. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>cell_exists: cell!=0 <p>
valid_dimension: cell->GetDimension()==3 <p>
att_exists: att!=0 <p>
points_exists: points!=0 <p>
cellArray_exists: cellArray!=0 <p>
internalPd_exists: internalPd!=0 </dd></dl>
<p>Implemented in <a class="el" href="a01546.html#80f682f5645d59c5647f0785c6b90318">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="9178a54673de685904adf6d18bddade0"></a><!-- doxytag: member="vtkGenericCellTessellator::Triangulate" ref="9178a54673de685904adf6d18bddade0" args="(vtkGenericAdaptorCell *cell, vtkGenericAttributeCollection *att, vtkDoubleArray *points, vtkCellArray *cellArray, vtkPointData *internalPd)=0" -->
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<td class="memname">virtual void vtkGenericCellTessellator::Triangulate </td>
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<td class="paramname"> <em>points</em>, </td>
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<td class="paramname"> <em>cellArray</em>, </td>
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<td class="paramname"> <em>internalPd</em></td><td> </td>
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Triangulate a 2D `cell'. The result is a set of smaller linear triangles in `cellArray' with `points' and point data `internalPd'. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>cell_exists: cell!=0 <p>
valid_dimension: cell->GetDimension()==2 <p>
att_exists: att!=0 <p>
points_exists: points!=0 <p>
cellArray_exists: cellArray!=0 <p>
internalPd_exists: internalPd!=0 </dd></dl>
<p>Implemented in <a class="el" href="a01546.html#201561e5693977c48c6cd061e5930917">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="65eb3514ac9636d16bb71fa1df055c1c"></a><!-- doxytag: member="vtkGenericCellTessellator::SetErrorMetrics" ref="65eb3514ac9636d16bb71fa1df055c1c" args="(vtkCollection *someErrorMetrics)" -->
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<td class="memname">virtual void vtkGenericCellTessellator::SetErrorMetrics </td>
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<td class="paramtype"><a class="el" href="a00285.html">vtkCollection</a> * </td>
<td class="paramname"> <em>someErrorMetrics</em> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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Specify the list of error metrics used to decide if an edge has to be splitted or not. It is a collection of vtkGenericSubdivisionErrorMetric-s.
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<a class="anchor" name="076045fdd511848e56aa56004974045a"></a><!-- doxytag: member="vtkGenericCellTessellator::GetErrorMetrics" ref="076045fdd511848e56aa56004974045a" args="()" -->
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<td class="memname">virtual <a class="el" href="a00285.html">vtkCollection</a>* vtkGenericCellTessellator::GetErrorMetrics </td>
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<td class="paramname"> </td>
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<td><code> [virtual]</code></td>
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Specify the list of error metrics used to decide if an edge has to be splitted or not. It is a collection of vtkGenericSubdivisionErrorMetric-s.
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<a class="anchor" name="2b482b5e0f9d56e036255151e461fbaa"></a><!-- doxytag: member="vtkGenericCellTessellator::Initialize" ref="2b482b5e0f9d56e036255151e461fbaa" args="(vtkGenericDataSet *ds)=0" -->
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<td class="memname">virtual void vtkGenericCellTessellator::Initialize </td>
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<td class="paramtype"><a class="el" href="a00590.html">vtkGenericDataSet</a> * </td>
<td class="paramname"> <em>ds</em> </td>
<td> ) </td>
<td><code> [pure virtual]</code></td>
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Initialize the tessellator with a data set `ds'.
<p>Implemented in <a class="el" href="a01546.html#1f8c5c9b2c6b769b1c2aea0258c9dfc4">vtkSimpleCellTessellator</a>.</p>
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<a class="anchor" name="a1a1c1b4f4aff224047fdc6bb18745f9"></a><!-- doxytag: member="vtkGenericCellTessellator::InitErrorMetrics" ref="a1a1c1b4f4aff224047fdc6bb18745f9" args="(vtkGenericDataSet *ds)" -->
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<td class="memname">void vtkGenericCellTessellator::InitErrorMetrics </td>
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<td class="paramtype"><a class="el" href="a00590.html">vtkGenericDataSet</a> * </td>
<td class="paramname"> <em>ds</em> </td>
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Init the error metric with the dataset. Should be called in each filter before any tessellation of any cell.
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<a class="anchor" name="ddc8cfa14b456c36451e619d121d25a0"></a><!-- doxytag: member="vtkGenericCellTessellator::GetMeasurement" ref="ddc8cfa14b456c36451e619d121d25a0" args="()" -->
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<td class="memname">virtual int vtkGenericCellTessellator::GetMeasurement </td>
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If true, measure the quality of the fixed subdivision.
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<a class="anchor" name="da29e9f4b0124e4551a95577c8728c06"></a><!-- doxytag: member="vtkGenericCellTessellator::SetMeasurement" ref="da29e9f4b0124e4551a95577c8728c06" args="(int)" -->
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<td class="memname">virtual void vtkGenericCellTessellator::SetMeasurement </td>
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<td class="paramtype">int </td>
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If true, measure the quality of the fixed subdivision.
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<a class="anchor" name="e674dc1f7493725b14ba9cffc07b6587"></a><!-- doxytag: member="vtkGenericCellTessellator::GetMaxErrors" ref="e674dc1f7493725b14ba9cffc07b6587" args="(double *errors)" -->
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<td class="memname">void vtkGenericCellTessellator::GetMaxErrors </td>
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<td class="paramname"> <em>errors</em> </td>
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Get the maximum error measured after the fixed subdivision. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>errors_exists: errors!=0 <p>
valid_size: sizeof(errors)==GetErrorMetrics()->GetNumberOfItems() </dd></dl>
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<a class="anchor" name="32a129872067548b781e73ac67515006"></a><!-- doxytag: member="vtkGenericCellTessellator::RequiresEdgeSubdivision" ref="32a129872067548b781e73ac67515006" args="(double *left, double *mid, double *right, double alpha)" -->
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<td class="memname">int vtkGenericCellTessellator::RequiresEdgeSubdivision </td>
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<td class="paramname"> <em>alpha</em></td><td> </td>
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<td></td><td></td><td><code> [protected]</code></td>
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Does the edge need to be subdivided according to at least one error metric? The edge is defined by its `leftPoint' and its `rightPoint'. `leftPoint', `midPoint' and `rightPoint' have to be initialized before calling <a class="el" href="a00584.html#32a129872067548b781e73ac67515006">RequiresEdgeSubdivision()</a>. Their format is global coordinates, parametric coordinates and point centered attributes: xyx rst abc de... `alpha' is the normalized abscissa of the midpoint along the edge. (close to 0 means close to the left point, close to 1 means close to the right point) <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>leftPoint_exists: leftPoint!=0 <p>
midPoint_exists: midPoint!=0 <p>
rightPoint_exists: rightPoint!=0 <p>
clamped_alpha: alpha>0 && alpha<1 <p>
valid_size: sizeof(leftPoint)=sizeof(midPoint)=sizeof(rightPoint) =GetAttributeCollection()->GetNumberOfPointCenteredComponents()+6 </dd></dl>
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<a class="anchor" name="83480e4736f1b648f2b5d0798232e5fa"></a><!-- doxytag: member="vtkGenericCellTessellator::UpdateMaxError" ref="83480e4736f1b648f2b5d0798232e5fa" args="(double *leftPoint, double *midPoint, double *rightPoint, double alpha)" -->
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<td class="memname">virtual void vtkGenericCellTessellator::UpdateMaxError </td>
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Update the max error of each error metric according to the error at the mid-point. The type of error depends on the state of the concrete error metric. For instance, it can return an absolute or relative error metric. See <a class="el" href="a00584.html#32a129872067548b781e73ac67515006">RequiresEdgeSubdivision()</a> for a description of the arguments. <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>leftPoint_exists: leftPoint!=0 <p>
midPoint_exists: midPoint!=0 <p>
rightPoint_exists: rightPoint!=0 <p>
clamped_alpha: alpha>0 && alpha<1 <p>
valid_size: sizeof(leftPoint)=sizeof(midPoint)=sizeof(rightPoint) =GetAttributeCollection()->GetNumberOfPointCenteredComponents()+6 </dd></dl>
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<a class="anchor" name="c80bf6fa3abd5774bb05adea039701dd"></a><!-- doxytag: member="vtkGenericCellTessellator::ResetMaxErrors" ref="c80bf6fa3abd5774bb05adea039701dd" args="()" -->
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<td class="memname">void vtkGenericCellTessellator::ResetMaxErrors </td>
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Reset the maximal error of each error metric. The purpose of the maximal error is to measure the quality of a fixed subdivision.
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<a class="anchor" name="3a47cc6a88984040e8f996caab6dae83"></a><!-- doxytag: member="vtkGenericCellTessellator::SetGenericCell" ref="3a47cc6a88984040e8f996caab6dae83" args="(vtkGenericAdaptorCell *cell)" -->
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<td class="memname">void vtkGenericCellTessellator::SetGenericCell </td>
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<td class="paramtype"><a class="el" href="a00579.html">vtkGenericAdaptorCell</a> * </td>
<td class="paramname"> <em>cell</em> </td>
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<td><code> [protected]</code></td>
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Send the current cell to error metrics. Should be called at the beginning of the implementation of <a class="el" href="a00584.html#7891af32f6e8241b1d9ccda47d4aa2db">Tessellate()</a>, <a class="el" href="a00584.html#9178a54673de685904adf6d18bddade0">Triangulate()</a> or <a class="el" href="a00584.html#77bc23b19420a36c4bf1439f45f242c0">TessellateFace()</a> <dl class="pre" compact><dt><b>Precondition:</b></dt><dd>cell_exists: cell!=0 </dd></dl>
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="b004d67351ac2efe067c83da944bdedf"></a><!-- doxytag: member="vtkGenericCellTessellator::ErrorMetrics" ref="b004d67351ac2efe067c83da944bdedf" args="" -->
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<td class="memname"><a class="el" href="a00285.html">vtkCollection</a>* <a class="el" href="a00584.html#b004d67351ac2efe067c83da944bdedf">vtkGenericCellTessellator::ErrorMetrics</a><code> [protected]</code> </td>
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List of error metrics. Collection of <a class="el" href="a00607.html" title="Objects that compute error during cell tessellation.">vtkGenericSubdivisionErrorMetric</a>
<p>Definition at line <a class="el" href="a04045.html#l00173">173</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<a class="anchor" name="8f5bcb8e1e1fbda890c4e59b0983b498"></a><!-- doxytag: member="vtkGenericCellTessellator::DataSet" ref="8f5bcb8e1e1fbda890c4e59b0983b498" args="" -->
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<td class="memname"><a class="el" href="a00590.html">vtkGenericDataSet</a>* <a class="el" href="a00584.html#8f5bcb8e1e1fbda890c4e59b0983b498">vtkGenericCellTessellator::DataSet</a><code> [protected]</code> </td>
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<p>Reimplemented in <a class="el" href="a01546.html#47d49eaf0f88b19db68195435ea5db9f">vtkSimpleCellTessellator</a>.</p>
<p>Definition at line <a class="el" href="a04045.html#l00180">180</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<a class="anchor" name="7be2d5b7f84159e26e7df1089dc3d6ec"></a><!-- doxytag: member="vtkGenericCellTessellator::Measurement" ref="7be2d5b7f84159e26e7df1089dc3d6ec" args="" -->
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<td class="memname">int <a class="el" href="a00584.html#7be2d5b7f84159e26e7df1089dc3d6ec">vtkGenericCellTessellator::Measurement</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a04045.html#l00182">182</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<a class="anchor" name="41015a376e693de37f8ad43512abb141"></a><!-- doxytag: member="vtkGenericCellTessellator::MaxErrors" ref="41015a376e693de37f8ad43512abb141" args="" -->
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<td class="memname">double* <a class="el" href="a00584.html#41015a376e693de37f8ad43512abb141">vtkGenericCellTessellator::MaxErrors</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a04045.html#l00183">183</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<a class="anchor" name="3b3d934f0008e2b088da0ae52d391547"></a><!-- doxytag: member="vtkGenericCellTessellator::MaxErrorsCapacity" ref="3b3d934f0008e2b088da0ae52d391547" args="" -->
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<td class="memname">int <a class="el" href="a00584.html#3b3d934f0008e2b088da0ae52d391547">vtkGenericCellTessellator::MaxErrorsCapacity</a><code> [protected]</code> </td>
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<p>Definition at line <a class="el" href="a04045.html#l00185">185</a> of file <a class="el" href="a04045.html">vtkGenericCellTessellator.h</a>.</p>
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<hr>The documentation for this class was generated from the following file:<ul>
<li>dox/Filtering/<a class="el" href="a04045.html">vtkGenericCellTessellator.h</a></ul>
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<hr size="1"><address style="text-align: right;"><small>Generated on Wed Jun 3 19:03:59 2009 for VTK by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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