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      <title>Foreground</title>
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      <div class="title_topic5" id="xps10_pagetitle">Foreground</div>
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      <p class="para_topic">The Type option selects the type of foreground to apply. The options available are the following:</p>
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               <p class="para_th">Type</p>
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               <p class="para_th">Description</p>
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               <p class="para_td">None</p>
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               <p class="para_td">No foreground option is selected</p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_visfx_fore_fog_r.html');return(false);">Fog</a></p>
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               <p class="para_td">Provides exponential attenuation of color as the distance is modified. You can use this option to simulate a diffuse atmosphere.</p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_visfx_fore_depth_r.html');return(false);">Depth Cue</a></p>
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               <p class="para_td">Provides a linear attenuation of color within a specified range. It interpolates between a specified Target Color within a range of distances, from near to far.</p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_visfx_fore_gfog_r.html');return(false);">Ground Fog</a></p>
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               <p class="para_td">Simulates a layer of fog that attenuates with increasing altitude.</p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_visfx_fore_snow_r.html');return(false);">Snow</a></p>
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            <td bgcolor="#f4f4f4" colspan="1" rowspan="1" valign="top">
               <p class="para_td">Provides the effect of snowflakes falling in front of the viewing camera. The effect is produced by placing random &quot;flakes&quot; on two planes at different scales in front of the camera.</p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_visfx_fore_tiff_r.html');return(false);">Tiff Image</a></p>
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               <p class="para_td">Positions a Tiff image in front of the generated shaded image. This option is handy if you want to place a logo or other symbol in the foreground of the generated image.</p>
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               <p class="para_td"> <a class="links" href="javascript:void(0)" onclick="top.openFile('visualizing_a_part/vie_vis_visfx_fore_litcat_r.html');return(false);">Light Scattering</a></p>
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               <p class="para_td">Creates an atmospheric scattering of light effect, with attenuation.</p>
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