9

Surface Approximation 1241
Te ssellation Presets group
Lets you choose a preset low, medium, or high
quality surface approximation. While a preset
is chosen, the values it uses are displayed on the
Tessellation Method rollout.
Preset values are saved in the 3dsmax.ini (page
1–18) fi le. You can customize the preset values
by using the Surface Approximation utility (page
1–1245).
Low—Selects a (comparatively) low-quality surface
approximation.Thesearethedefaultvalues:
View ports, Base Surface:
Method=Spatial and Cur vature Edge=50.0
Distance=50.0 Angle=50.0 Merge=0.0 Advanced
Parameters > Minimum=0, Maximum=3
Renderer , Base Surface:
Method=Spatial and Cur vature Edge=20.0
Distance=20.0 Angle=15.0 Merge=0.01 Advanced
Parameters > Minimum=0, Maximum=3
Renderer, Displaced Surface:
Method=Spatial and Cur vature Edge=20.0
Distance=20.0 Angle=10.0 Merge=(Unavailable)
Advanced Parameters > Minimum=0,
Maximum=2
Keyboard shortcut:
Alt+1
Medium—(The default for both viewports and
rendering.) Selects a medium-quality surface
approximation.Thesearethedefaultvalues:
View ports, Base Surface:
Method=Spatial and Cur vature Edge=20.0
Distance=20.0 Angle=15.0 Merge=0.0 Advanced
Parameters > Minimum=0, Maximum=3
Renderer , Base Surface:
Method=Spatial and Cur vature Edge=10.0
Distance=15.0 Angle=10.0 Merge=0.01 Advanced
Parameters > Minimum=0, Maximum=4
Renderer, Displaced Surface:
Method=Spatial and Curvature Edge=10.0
Distance=10.0 Angle=4.0 Merge=(Unavailable)
Advanced Parameters > Minimum=0,
Maximum=3
Keyboard shortcut:
Alt+2
High—Selects a high-quality surface
approximation. These are the default va lues:
View ports, Base Surface:
Method=Spatial and Curvature E dge=5.0
Distance=15.0 Ang le=10.0 Merge=0.0 Advanced
Parameters > Minimum=0, Maximum=3
Renderer, Base Surface:
Method=Spatial and Curvature E dge=5.0
Distance=5.0 Angle=3.0 Merge=0.01 Advanced
Parameters > Minimum=0, Maximum=4
Renderer, Displaced Surface:
Method=Spatial and Curvature E dge=5.0
Distance=5.0 Angle=2.0 Merge=(Unavailable)
Advanced Parameters > Minimum=0,
Maximum=4
Keyboard shortcut:
Alt+3
Note: The keyboard shortcuts for surface
approximation presets don’t require that the
KeyboardShortcutOverrideTogglebeon.You
can change the surface approximation of NURB S
objects by selecting them in a viewport, and then
using
Alt+1 , Alt+2 ,or Alt+3 .Thisworksfor
sub-objectsaswell,butthesurfacesub-object’s
Lock to Top Level toggle must be turned off.
Tesse llation Method gro up
The controls in this group affect the display of the
NURBS surface in viewports if you have chosen
Viewports above, or by the renderer if you have
chosen Renderer above. You can choose between