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      <title>Direct Field of View - View Limitation</title>
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      <div class="title_topic2" id="xps10_pagetitle">Direct Field of View - View Limitation</div>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('vehiclepkg/dview_ov.html');return(false);">Overview</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('vehiclepkg/dview_proc.html');return(false);">How To</a></p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('vehiclepkg/dview_steps.html');return(false);">Options</a></p>
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               <p class="para_td">Related Topics</p>
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      </table><br><p class="para_topic">Use this step to define how the driver view is limited. </p>
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               <p class="para_th">Direct Field of View - View Limitation Options</p>
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               <p class="para_td">Limitation Type</p>
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               <p class="para_td">Use this option to define how the driver's view is limited.</p>
               <p class="para_td">You can select from the following types:</p>
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                  <li>
                     <p class="para_item">By an Aperture (Through a Window)</p>
                  </li>
                  <li>
                     <p class="para_item">By Head Turn and Eye Rotation</p>
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               <p class="para_td">Aperture Boundary</p>
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               <p class="para_td">Use this step to select a closed loop of curves that define the boundary of an aperture, limiting the direct field of view. The aperture is like a window through which the field of view must pass. The aperture or closed loops should be located in front of the eye points or eyellipse.</p>
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                     <td valign="top" align="left"><img align="left" src="../graphics/note.gif" alt="Note" title="Note"></td>
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                           <p class="para_note_body">You see this step only if you specified By an Aperture (Through a Window) for the Limitation Type.</p>
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               <p align="center"><img align="bottom" src="graphics/dview_apperture.gif"></p>
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               <p class="para_th">Sample Aperture (1) with Eyellipse (2) used to Create a Direct Field of View (right)</p>
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               <p class="para_td">If the wizard is obstructing the graphics window when you are trying to select the closed loop, you can use F3 to turn off its display (use F3 to turn it back on).</p>
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               <p class="para_td">Define Angles</p>
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               <p class="para_td">Use this step to define angles for the eye rotation and head turn. </p>
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                        <div class="para_note">
                           <p class="para_note_body">You see this step only if you specified By Head Turn and Eye Rotation for the Limitation Type.</p>
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               <p align="center"><img align="bottom" src="graphics/dview_easy.gif"></p>
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               <p class="para_th">Sample with All Easy Settings</p>
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               <p class="para_th">Sample with Easy Eye Rotation / Maximum Head Turn</p>
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               <p class="para_th">Sample with All Max Settings</p>
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               <p class="para_th">Eye Rotation</p>
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               <p class="para_td">To define the eye rotation, you can choose predefined angles or you can specify your own.</p>
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               <p class="para_th"><em>Maximum</em></p>
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               <p class="para_td">Choose this setting for predefined angles for a maximum field of rotation: 30 degrees left, 30 degrees right, 45 degrees up, and 60 degrees down.</p>
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               <p class="para_th"><em>Easy</em></p>
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               <p class="para_td">Choose this setting for predefined angles for an easy field of rotation: 15 degrees left, 15 degrees right, 15 degrees up, and 15 degrees down.</p>
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               <p class="para_th"><em>Customize</em></p>
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               <p class="para_td">Choose this setting to enter your own angles for the eye rotation parameters. Angle values must be between 0 and 90 degrees.</p>
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               <p class="para_th">Head Turn</p>
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               <p class="para_td">To define the head turn, you can choose predefined angles or you can specify your own.</p>
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               <p class="para_th"><em>Maximum</em></p>
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               <p class="para_td">Choose this setting for predefined angles for maximum head turn: 60 degrees left and 60 degrees right.</p>
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               <p class="para_th"><em>Easy</em></p>
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               <p class="para_td">Choose this setting for predefined angles for an easy head turn: 45 degrees left and 45 degrees right.</p>
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               <p class="para_th"><em>Customize</em></p>
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               <p class="para_td">Choose this setting to enter your own angles for the head turn parameters. Angle values must be between 0 and 90 degrees.</p>
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               <p class="para_th"><em>No</em></p>
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               <p class="para_td">Choose this setting if you want no head turn for the analysis. The angles will be set to zero.</p>
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