Autodesk 12812-051462-9011 User Guide 3 - Page 2500

Viewport Parameters group Use Dual Planes Uses the front/back plane system when redrawing the viewport. The selected object is manipulated in the front plane and is redrawn, while other objects remain on the back plane and are not redrawn. This default setting provides the fastest redraws under normal circumstances. If your assigned display driver doesn't support dual planes, this option is not available. Turn off this setting to improve redraw speed if you are rotating the whole scene or moving a camera through the scene (usually situations in which the whole viewport needs to be redrawn anyway). Show Vertices As Dots When on, the software displays vertices in mesh and patch objects as small, solid-color squares, whose size you can set with the Size parameter. When off, the vertex display is a tick mark. Size Lets you specify the vertex size displayed in the viewports. Range=2 to 7. Default=2. Handle Size Lets you specify the display size for handles attached to patch vertices and spline vertices. Range=2 to 7. Default=3. Draw Links as Lines Displays the hierarchical links on page 8002 between parent and child objects as plain lines, rather than shapes when Display panel > Link Display rollout > Display Link is on. Show Links is enabled in the Object Properties dialog. Backface Cull on Object Creation Determines whether to display faces with normals on page 8059 pointing away from view. When on, you see through the wireframe to the backfaces. This option applies to wireframe viewport displays only. In most cases, keep this switch enabled. However, when modeling with NURBS surfaces, which consist of single-sided planes, it's easier to view the geometry from all angles when backface culling is off. ■ This control affects only the created objects, and you can reverse the effect on each object by changing the Backface Cull setting in the Object Properties dialog for that object.You might turn off Backface Cull On Object Creation before creating your NURBS, and then turn it on again when your finished. ■ You can globally change the display of backface culling in the viewports by turning on Force 2-Sided on page 7817 on the Rendering Method panel of the Viewport Configuration dialog. Attenuate Lights Turns the display of attenuation effects on page 7915 on or off from start to end in the interactive viewport renderer. When off, attenuated lights behave as though unattenuated. Default=off. Viewport Preferences | 7755