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      <title>Curve Trajectory View Parameters</title>
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      <div class="title_topic6" id="xps10_pagetitle">Curve Trajectory View Parameters</div>
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      <p class="para_topic">Curve trajectory key frame interpolations are defined by three parameters: the Eye Point, the Look At Point and the View Up Vector.</p>
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               <p class="para_th">Option</p>
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               <p class="para_th">Description</p>
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               <p class="para_td">Eye Point</p>
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               <p class="para_td">The Eye Point is defined by the xyz location of the key frame point on the trajectory profile.</p>
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               <p class="para_td">Look At Point</p>
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               <p class="para_td">The Look At Point is specified by the Orientation option, and can be either tangential to the key frame point, or it can be an object in the Graphics window.</p>
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               <p class="para_td">View Up Vector</p>
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               <p class="para_td">For 1D and 3D trajectories, the View Up Vector is initially taken from the Y-axis of the view. It is assigned at the time a trajectory curve profile is created. You can change the direction of the View Up Vector using the Reverse Up Vector button (in conjunction with the Set Up Camera option.</p>
               <p class="para_td">For 2D trajectories, the normal vector to the trajectory curve plane is used for the View Up Vector.</p>
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