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<h1>vtkPolygonalSurfaceContourLineInterpolator Class Reference</h1><!-- doxytag: class="vtkPolygonalSurfaceContourLineInterpolator" --><!-- doxytag: inherits="vtkPolyDataContourLineInterpolator" --><code>#include <<a class="el" href="a05514.html">vtkPolygonalSurfaceContourLineInterpolator.h</a>></code>
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Inheritance diagram for vtkPolygonalSurfaceContourLineInterpolator:</div>
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<p><center><img src="a13313.png" border="0" usemap="#a13314" alt="Inheritance graph"></center>
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Collaboration diagram for vtkPolygonalSurfaceContourLineInterpolator:</div>
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<p><center><img src="a13315.png" border="0" usemap="#a13316" alt="Collaboration graph"></center>
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<a href="a13317.html">List of all members.</a><hr><a name="_details"></a><h2>Detailed Description</h2>
Contour interpolator for to place points on polygonal surfaces.
<p>
<a class="el" href="a01280.html" title="Contour interpolator for to place points on polygonal surfaces.">vtkPolygonalSurfaceContourLineInterpolator</a> interpolates and places contour points on polygonal surfaces. The class interpolates nodes by computing a <em>graph</em> <em>geodesic</em> lying on the polygonal data. By <em>graph</em> <em>Geodesic</em>, we mean that the line interpolating the two end points traverses along on the mesh edges so as to form the shortest path. A Dijkstra algorithm is used to compute the path. See <a class="el" href="a00416.html" title="Dijkstra algorithm to compute the graph geodesic.">vtkDijkstraGraphGeodesicPath</a>.<p>
The class is mean to be used in conjunction with <a class="el" href="a01281.html">vtkPolygonalSurfacePointPlacer</a>. The reason for this weak coupling is a performance issue, both classes need to perform a cell pick, and coupling avoids multiple cell picks (cell picks are slow).<p>
<dl class="warning" compact><dt><b>Warning:</b></dt><dd>You should have computed cell normals for the input polydata.</dd></dl>
<dl class="see" compact><dt><b>See also:</b></dt><dd><a class="el" href="a00416.html" title="Dijkstra algorithm to compute the graph geodesic.">vtkDijkstraGraphGeodesicPath</a>, <a class="el" href="a01267.html" title="compute normals for polygonal mesh">vtkPolyDataNormals</a></dd></dl>
<dl class="user" compact><dt><b>Tests:</b></dt><dd><a class="el" href="c2_vtk_t_12.html#c2_vtk_t_vtkPolygonalSurfaceContourLineInterpolator">vtkPolygonalSurfaceContourLineInterpolator (Tests)</a> </dd></dl>
<p>Definition at line <a class="el" href="a05514.html#l00049">49</a> of file <a class="el" href="a05514.html">vtkPolygonalSurfaceContourLineInterpolator.h</a>.</p>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">typedef <br>
<a class="el" href="a01264.html">vtkPolyDataContourLineInterpolator</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#19c488efa10c0097002cbfb557285e78">Superclass</a></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual const char * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#273e8916dc7e878dc5852ca00abd5173">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="a01280.html#fba82dfb09326908c940c817bb345329">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="a01280.html#a9d6a2e15ce548b249a927539770f88f">PrintSelf</a> (ostream &os, <a class="el" href="a00869.html">vtkIndent</a> indent)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static int </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#e46e7c704aa4e6597681005f46733d3c">IsTypeOf</a> (const char *type)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">static <br>
<a class="el" href="a01280.html">vtkPolygonalSurfaceContourLineInterpolator</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#eb8e8695355c2385f92f9b95e81080ea">SafeDownCast</a> (<a class="el" href="a01084.html">vtkObject</a> *o)</td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></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="a01280.html#bd918d0289e413ef5cd5f12e066704df">InterpolateLine</a> (<a class="el" href="a01480.html">vtkRenderer</a> *ren, <a class="el" href="a00326.html">vtkContourRepresentation</a> *rep, int idx1, int idx2)</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="a01280.html#6d235320039e982d7b23b9f4ee24a48e">UpdateNode</a> (<a class="el" href="a01480.html">vtkRenderer</a> *, <a class="el" href="a00326.html">vtkContourRepresentation</a> *, double *vtkNotUsed(node), int vtkNotUsed(idx))</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="a01280.html#247ef58fdbb3982c96e461779d1f9fa6">SetDistanceOffset</a> (double)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#374e1c625c1fb2d6987c34565a76db12">GetDistanceOffset</a> ()</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 <br>
<a class="el" href="a01280.html">vtkPolygonalSurfaceContourLineInterpolator</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#114b90d2158f1bae12619f16a3d87a0c">New</a> ()</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="a01280.html#dc8a5ddbdf72879b78aa1f779e61d15e">vtkPolygonalSurfaceContourLineInterpolator</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#3bab9012caf4bf5c063ebcf0bf444dc4">~vtkPolygonalSurfaceContourLineInterpolator</a> ()</td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">double </td><td class="memItemRight" valign="bottom"><a class="el" href="a01280.html#78e09bb92382f7795d0cfda4a78b07e2">DistanceOffset</a></td></tr>
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<hr><h2>Member Typedef Documentation</h2>
<a class="anchor" name="19c488efa10c0097002cbfb557285e78"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::Superclass" ref="19c488efa10c0097002cbfb557285e78" args="" -->
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<td class="memname">typedef <a class="el" href="a01264.html">vtkPolyDataContourLineInterpolator</a> <a class="el" href="a01264.html">vtkPolygonalSurfaceContourLineInterpolator::Superclass</a> </td>
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Standard methods for instances of this class.
<p>Reimplemented from <a class="el" href="a01264.html#05ef258a1eaf5b9c78c31206e665457c">vtkPolyDataContourLineInterpolator</a>.</p>
<p>Definition at line <a class="el" href="a05514.html#l00054">54</a> of file <a class="el" href="a05514.html">vtkPolygonalSurfaceContourLineInterpolator.h</a>.</p>
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<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="dc8a5ddbdf72879b78aa1f779e61d15e"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::vtkPolygonalSurfaceContourLineInterpolator" ref="dc8a5ddbdf72879b78aa1f779e61d15e" args="()" -->
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<td class="memname">vtkPolygonalSurfaceContourLineInterpolator::vtkPolygonalSurfaceContourLineInterpolator </td>
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<td><code> [protected]</code></td>
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<a class="anchor" name="3bab9012caf4bf5c063ebcf0bf444dc4"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::~vtkPolygonalSurfaceContourLineInterpolator" ref="3bab9012caf4bf5c063ebcf0bf444dc4" args="()" -->
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<td class="memname">vtkPolygonalSurfaceContourLineInterpolator::~vtkPolygonalSurfaceContourLineInterpolator </td>
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<td><code> [protected]</code></td>
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<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="273e8916dc7e878dc5852ca00abd5173"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::GetClassName" ref="273e8916dc7e878dc5852ca00abd5173" args="()" -->
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<td class="memname">virtual const char* vtkPolygonalSurfaceContourLineInterpolator::GetClassName </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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Standard methods for instances of this class.
<p>Reimplemented from <a class="el" href="a01264.html#53f609b188332a0f770d8d57ebe8fc41">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="e46e7c704aa4e6597681005f46733d3c"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::IsTypeOf" ref="e46e7c704aa4e6597681005f46733d3c" args="(const char *type)" -->
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<td class="memname">static int vtkPolygonalSurfaceContourLineInterpolator::IsTypeOf </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>type</em> </td>
<td> ) </td>
<td><code> [static]</code></td>
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Standard methods for instances of this class.
<p>Reimplemented from <a class="el" href="a01264.html#d8ebe268492365f13086b6bdb6a0de36">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="fba82dfb09326908c940c817bb345329"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::IsA" ref="fba82dfb09326908c940c817bb345329" args="(const char *type)" -->
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<td class="memname">virtual int vtkPolygonalSurfaceContourLineInterpolator::IsA </td>
<td>(</td>
<td class="paramtype">const char * </td>
<td class="paramname"> <em>type</em> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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Standard methods for instances of this class.
<p>Reimplemented from <a class="el" href="a01264.html#83f98194ba979747cf54d2d61bb7728b">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="eb8e8695355c2385f92f9b95e81080ea"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::SafeDownCast" ref="eb8e8695355c2385f92f9b95e81080ea" args="(vtkObject *o)" -->
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<td class="memname">static <a class="el" href="a01280.html">vtkPolygonalSurfaceContourLineInterpolator</a>* vtkPolygonalSurfaceContourLineInterpolator::SafeDownCast </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a01084.html">vtkObject</a> * </td>
<td class="paramname"> <em>o</em> </td>
<td> ) </td>
<td><code> [static]</code></td>
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<p>
Standard methods for instances of this class.
<p>Reimplemented from <a class="el" href="a01264.html#8acf56328fdc2fa92adb97eb7143d267">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="a9d6a2e15ce548b249a927539770f88f"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::PrintSelf" ref="a9d6a2e15ce548b249a927539770f88f" args="(ostream &os, vtkIndent indent)" -->
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<td class="memname">void vtkPolygonalSurfaceContourLineInterpolator::PrintSelf </td>
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<td class="paramtype">ostream & </td>
<td class="paramname"> <em>os</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype"><a class="el" href="a00869.html">vtkIndent</a> </td>
<td class="paramname"> <em>indent</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td><code> [virtual]</code></td>
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Standard methods for instances of this class.
<p>Reimplemented from <a class="el" href="a01264.html#b6397682c1df8594dcd44cb9a6a13e33">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="114b90d2158f1bae12619f16a3d87a0c"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::New" ref="114b90d2158f1bae12619f16a3d87a0c" args="()" -->
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<td class="memname">static <a class="el" href="a01280.html">vtkPolygonalSurfaceContourLineInterpolator</a>* vtkPolygonalSurfaceContourLineInterpolator::New </td>
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Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
<p>Reimplemented from <a class="el" href="a01084.html#4d5b227267c076d6f9e38483370b6612">vtkObject</a>.</p>
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<a class="anchor" name="bd918d0289e413ef5cd5f12e066704df"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::InterpolateLine" ref="bd918d0289e413ef5cd5f12e066704df" args="(vtkRenderer *ren, vtkContourRepresentation *rep, int idx1, int idx2)" -->
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<td class="memname">virtual int vtkPolygonalSurfaceContourLineInterpolator::InterpolateLine </td>
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Subclasses that wish to interpolate a line segment must implement this. For instance <a class="el" href="a00163.html" title="Interpolates supplied nodes with bezier line segments.">vtkBezierContourLineInterpolator</a> adds nodes between idx1 and idx2, that allow the contour to adhere to a bezier curve.
<p>Implements <a class="el" href="a01264.html#56121dae79a27baca10cda537fd10438">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="6d235320039e982d7b23b9f4ee24a48e"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::UpdateNode" ref="6d235320039e982d7b23b9f4ee24a48e" args="(vtkRenderer *, vtkContourRepresentation *, double *vtkNotUsed(node), int vtkNotUsed(idx))" -->
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<td class="memname">virtual int vtkPolygonalSurfaceContourLineInterpolator::UpdateNode </td>
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<td class="paramtype"><a class="el" href="a00326.html">vtkContourRepresentation</a> * </td>
<td class="paramname">, </td>
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<td class="paramtype">double * </td>
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<td>)</td>
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The interpolator is given a chance to update the node. vtkImageContourLineInterpolator updates the idx'th node in the contour, so it automatically sticks to edges in the vicinity as the user constructs the contour. Returns 0 if the node (world position) is unchanged.
<p>Implements <a class="el" href="a01264.html#57c15c5cf50e96fb4994d16ffd39735c">vtkPolyDataContourLineInterpolator</a>.</p>
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<a class="anchor" name="247ef58fdbb3982c96e461779d1f9fa6"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::SetDistanceOffset" ref="247ef58fdbb3982c96e461779d1f9fa6" args="(double)" -->
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<td class="memname">virtual void vtkPolygonalSurfaceContourLineInterpolator::SetDistanceOffset </td>
<td>(</td>
<td class="paramtype">double </td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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Height offset at which points may be placed on the polygonal surface. If you specify a non-zero value here, be sure to have computed vertex normals on your input polygonal data. (easily done with <a class="el" href="a01267.html" title="compute normals for polygonal mesh">vtkPolyDataNormals</a>).
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<a class="anchor" name="374e1c625c1fb2d6987c34565a76db12"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::GetDistanceOffset" ref="374e1c625c1fb2d6987c34565a76db12" args="()" -->
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<td class="memname">virtual double vtkPolygonalSurfaceContourLineInterpolator::GetDistanceOffset </td>
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<td class="paramname"> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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<p>
Height offset at which points may be placed on the polygonal surface. If you specify a non-zero value here, be sure to have computed vertex normals on your input polygonal data. (easily done with <a class="el" href="a01267.html" title="compute normals for polygonal mesh">vtkPolyDataNormals</a>).
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<hr><h2>Member Data Documentation</h2>
<a class="anchor" name="78e09bb92382f7795d0cfda4a78b07e2"></a><!-- doxytag: member="vtkPolygonalSurfaceContourLineInterpolator::DistanceOffset" ref="78e09bb92382f7795d0cfda4a78b07e2" args="" -->
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<td class="memname">double <a class="el" href="a01280.html#78e09bb92382f7795d0cfda4a78b07e2">vtkPolygonalSurfaceContourLineInterpolator::DistanceOffset</a><code> [protected]</code> </td>
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Draw the polyline at a certain height (in the direction of the vertex normal) above the polydata.
<p>Definition at line <a class="el" href="a05514.html#l00096">96</a> of file <a class="el" href="a05514.html">vtkPolygonalSurfaceContourLineInterpolator.h</a>.</p>
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<hr>The documentation for this class was generated from the following file:<ul>
<li>dox/Widgets/<a class="el" href="a05514.html">vtkPolygonalSurfaceContourLineInterpolator.h</a></ul>
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<hr size="1"><address style="text-align: right;"><small>Generated on Wed Jun 3 19:26:21 2009 for VTK by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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