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      <title>Erase Shade</title>
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      <div class="title_topic6" id="xps10_pagetitle"> Erase Shade</div>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_hq_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('visualizing_a_part/vie_vis_hq_ht.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('visualizing_a_part/vie_vis_hq_op.html');return(false);">Dialog Options</a></p>
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      </table><br><p class="para_topic"> You can erase the shaded images by selecting the Erase Shade button. The shaded images will also be erased on entry to special functions, and before the generation of the next image.</p>
      <p class="para_topic"> The amount of time necessary to generate an image depends to a large degree on the Method of image generation. For a fairly complex image (a depiction of an Indy racecar) generated using a HP 730 with 64Mb of memory, here are some time estimates:</p>
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               <p class="para_td"> Category</p>
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               <p class="para_td"> Method</p>
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               <p class="para_td"> Flat</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> Gouraud</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> Improved</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> Photo-Realistic</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> Ray Traced</p>
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               <p class="para_td"> Process Geometry</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:04</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:04</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:04</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:04</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:04</p>
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               <p class="para_td"> Process Lights</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 0:00</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:10</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:10</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:10</p>
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               <p class="para_td"> Generate the Image</p>
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               <p class="para_td"> 0:18</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 0:27</p>
            </td>
            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 24:01</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 59:16</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 123.50</p>
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               <p class="para_td"> Total Time (minutes)</p>
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               <p class="para_td"> 1:22</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 1:31</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 26:15</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 61:30</p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="middle">
               <p class="para_td"> 126.04</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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               <div class="para_note">
                  <p class="para_note_body">  The time estimates given here are for an image where nearly every pixel intersects something, and every intersection is reflecting or textured.  </p>
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