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<div class="textblock"><p>Section: <a class="el" href="sec_vtkrendering.html">Visualization Toolkit Rendering Classes</a> </p>
<h1><a class="anchor" id="Usage"></a>
Usage</h1>
<p>vtkPolyDataPainter encapsulates a method of drawing poly data. This is a subset of what a mapper does. The painter does no maintenance of the rendering state (camera, lights, etc.). It is solely responsible for issuing rendering commands that build graphics primitives.</p>
<p>To simplify coding, an implementation of vtkPolyDataPainter is allowed to support only certain types of poly data or certain types of primitives.</p>
<p>To create an instance of class vtkPolyDataPainter, simply invoke its constructor as follows </p>
<pre class="fragment"> obj = vtkPolyDataPainter
</pre> <h1><a class="anchor" id="Methods"></a>
Methods</h1>
<p>The class vtkPolyDataPainter has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, <code>obj</code> is an instance of the vtkPolyDataPainter class. </p>
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<li>
<code>string = obj.GetClassName ()</code> </li>
<li>
<code>int = obj.IsA (string name)</code> </li>
<li>
<code>vtkPolyDataPainter = obj.NewInstance ()</code> </li>
<li>
<code>vtkPolyDataPainter = obj.SafeDownCast (vtkObject o)</code> </li>
<li>
<code>vtkPolyData = obj.GetInputAsPolyData ()</code> - Get/set the poly data to render. </li>
<li>
<code>vtkPolyData = obj.GetOutputAsPolyData ()</code> - Get the output polydata from this Painter. The default implementation forwards the input polydata as the output. </li>
<li>
<code>obj.Render (vtkRenderer renderer, vtkActor actor, long typeflags, bool forceCompileOnly)</code> - Overridden to stop the render call if input polydata is not set, since PolyDataPainter cannot paint without any polydata input. </li>
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