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<div class="title">vtkInteractorStyleTrackballCamera </div> </div>
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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>vtkInteractorStyleTrackballCamera allows the user to interactively manipulate (rotate, pan, etc.) the camera, the viewpoint of the scene. In trackball interaction, the magnitude of the mouse motion is proportional to the camera motion associated with a particular mouse binding. For example, small left-button motions cause small changes in the rotation of the camera around its focal point. For a 3-button mouse, the left button is for rotation, the right button for zooming, the middle button for panning, and ctrl + left button for spinning. (With fewer mouse buttons, ctrl + shift + left button is for zooming, and shift + left button is for panning.)</p>
<p>To create an instance of class vtkInteractorStyleTrackballCamera, simply invoke its constructor as follows </p>
<pre class="fragment"> obj = vtkInteractorStyleTrackballCamera
</pre> <h1><a class="anchor" id="Methods"></a>
Methods</h1>
<p>The class vtkInteractorStyleTrackballCamera 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 vtkInteractorStyleTrackballCamera class. </p>
<ul>
<li>
<code>string = obj.GetClassName ()</code> </li>
<li>
<code>int = obj.IsA (string name)</code> </li>
<li>
<code>vtkInteractorStyleTrackballCamera = obj.NewInstance ()</code> </li>
<li>
<code>vtkInteractorStyleTrackballCamera = obj.SafeDownCast (vtkObject o)</code> </li>
<li>
<code>obj.OnMouseMove ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.OnLeftButtonDown ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
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<code>obj.OnLeftButtonUp ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
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<code>obj.OnMiddleButtonDown ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.OnMiddleButtonUp ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.OnRightButtonDown ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.OnRightButtonUp ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.OnMouseWheelForward ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.OnMouseWheelBackward ()</code> - Event bindings controlling the effects of pressing mouse buttons or moving the mouse. </li>
<li>
<code>obj.Rotate ()</code> </li>
<li>
<code>obj.Spin ()</code> </li>
<li>
<code>obj.Pan ()</code> </li>
<li>
<code>obj.Dolly ()</code> </li>
<li>
<code>obj.SetMotionFactor (double )</code> - Set the apparent sensitivity of the interactor style to mouse motion. </li>
<li>
<code>double = obj.GetMotionFactor ()</code> - Set the apparent sensitivity of the interactor style to mouse motion. </li>
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