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<h1>NVIZ Reference Manual</h1>
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<a href="nviz_toc.html">CONTENTS</a>
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<h2>Movement Panel</h2>
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<p>The <strong>Movement</strong> panel always appears at the top of the
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<strong>Controls</strong> window. You use the <strong>Movement</strong>
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panel to set the position, direction, and perspective of the view. As you
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change movement options, a low resolution or wire grid of the surface
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redraws (<strong><em>fast display mode</em></strong>) showing the results
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<img src="nvimg/panel/main.gif" alt = "Movement Panel" width="302" height="323">
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<dt> <strong>Auto: Clear</strong></dt>
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<dd>Clears the screen before drawing the surfaces (if selected).<br><br></dd>
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<dt> <strong>Auto: Draw</strong></dt>
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<dd>Redraws the scene each time the view changes (if selected).<br><br></dd>
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<dt> <strong>Feature: Surface</strong></dt>
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<dd>Draws all loaded surfaces (if selected).<br><br></dd>
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<dt> <strong>Feature: Vectors</strong></dt>
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<dd>Draws all loaded vectors (if selected).<br><br></dd>
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<dt> <strong>Feature: Sites</strong></dt>
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<dd>Draws all loaded sites files (if selected).<br><br></dd>
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<dt> <strong>Draw</strong></dt>
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<dd>Draws selected files using the current viewing and lighting options.
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<dt> <strong>Clear</strong></dt>
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<dd>Clears the screen to the background color.<br><br></dd>
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<dt> <strong>Cancel</strong></dt>
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<dd>Cancels the drawing in progress.<br><br></dd>
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<dt> <strong>View: eye</strong></dt>
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<dd>Sets the position box (directly below) to control the eye position
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of the view. The view center remains unchanged.<br><br></dd>
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<dt> <strong>View: center</strong></dt>
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<dd>Sets the position box (directly below) to control the view center
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position. The eye position remains unchanged.<br><br></dd>
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<dt> <strong>Position Box</strong></dt>
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<dd>If the <strong><em>eye</em></strong> view is selected, the position
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box shows a puck with a direction arrow pointing to the center. The direction arrow indicates the look direction (azimuth). You click and drag the puck to change the current eye position. The box annotations are <strong><em>N</em></strong>orth, <strong><em>S</em></strong>outh, <strong><em>E</em></strong>ast, and <strong><em>W</em></strong>est.
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If the <strong><em>center</em></strong> view is selected, the position
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box shows as a cross hair. You click and drag the cross hair to change the current center of view.<br><br></dd>
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<dt> <strong>Height</strong></dt>
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<dd> Adjusts the viewer's height above the scene.<br><br></dd>
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<dt> <strong>zexag</strong></dt>
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<dd> Adjusts the vertical exaggeration of the surface. As an example,
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if the easting and northing are in meters and the elevation in feet,
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a vertical exaggeration of .305 would produce a true (unexaggerated)
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surface. <br><br></dd>
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<dt> <strong>Look here</strong></dt>
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<dd> Allows you to select a point on the surface that becomes the new
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<dt> <strong>Look center</strong></dt>
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<dd>Resets the view to the original default center of view.
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<dt> <strong>Look top</strong></dt>
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<dd>Sets the viewer directly over the scene's center position. This
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<strong><em>top</em></strong> view orients approximately north south.
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<dt> <strong>Look cancel</strong></dt>
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<dd> Allows you to move over the surface with no center of view.
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<dt> <strong>perspective</strong></dt>
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<dd> Adjusts the viewer's angle of view.<br><br></dd>
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<dt> <strong>twist</strong></dt>
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<dd> Rotates the scene about the horizontal axis. An angle of 0 is flat.
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The scene rotates between -90 and 90 degrees.<br><br></dd>
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<dt> <strong>RESET</strong></dt>
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<dd>Returns all current settings to their startup values.<br><br></dd>