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      <title>Editing a Curve Trajectory</title>
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      <div class="title_topic6" id="xps10_pagetitle">Editing a Curve Trajectory</div>
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      <p class="para_topic">To edit a curve trajectory:</p>
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         <li>
            <p class="para_item">Select View&rarr;Operation&rarr;Navigate Options&rarr;Edit Key Frames or Select the View&rarr;Visualization&rarr;Create Animation&rarr;Key Frames This displays the View Navigation dialog.</p>
         </li>
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      <div class="title_division">Adding Keyframes to a Curve Trajectory</div>
      <p class="para_division">To add key frame points to a curve trajectory:</p>
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         <li>
            <p class="para_item">Select the name of a trajectory in the list box.</p>
         </li>
         <li>
            <p class="para_item">Click the Edit Key Frames button. This displays the Edit Key Frame dialog shown below.</p>
         </li>
         <li>
            <p class="para_item">Click Add.</p>
         </li>
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      <p class="para_division">Establishing key frame points in a Curve Trajectory allows you to control camera orientation along the trajectory path, as well as the speed of the animation at different stages of the playback.</p>
      <p class="para_division">In addition to adding key frame points to a trajectory path, you can also edit and delete them.</p>
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      <div class="title_figure">Edit Key Frame Dialog - Curve Trajectory</div>
      <p class="para_division">If the trajectory type you highlighted in the list box is not a Curve Trajectory you will not see the Edit Key Frame dialog shown above. Instead you will see the Key Frames dialog for editing a Key Frame Trajectory.</p>
      <p class="para_division">To verify the type of animation trajectory you have highlighted in the list box, select the  Information option.</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">   When editing a curve trajectory, we recommend that you set the Rendering Style to Shaded. This makes it easy to see the model and visualize the path as you set up the navigation key frames.</p>
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      <div class="title_division">Curves in A Curve Trajectory</div>
      <p class="para_division">The curves you select for a trajectory profile must be contiguous (see Selecting Curves for a Curve Trajectory). It is also necessary that those curves remain contiguous after the trajectory is specified. When you select an existing Curve Trajectory in the list box, the system checks it to verify that it is still contiguous. If it is not, a dialog displays prompting you to redefine the trajectory.</p>
      <p class="para_division">You can edit the curves in a trajectory profile, and as long no key frame points are affected the trajectory will remain intact. If your editing does affect a key frame point you may see the following warning:</p>
      <p class="para_division">Unable to save trajectory. Trajectory removed. You may select Undo to get the trajectory back.</p>
      <p class="para_division">You can use any NX editing tools to edit the curves in a trajectory profile.</p>
      <p class="para_division">If you start to delete a curve that is part of a Curve Trajectory, this warning message displays stating that the trajectory the curve is associated with will also be deleted if you proceed.</p>
      <p class="para_division">Trajectory will be deleted. Do you want to continue with this deletion?</p>
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