SubD-Type
SubD-Type stands for subdivision type. A subdivided object is one in which each polygonal
patch is subdivided x number of times.You can tell Modeler (and Layout) how much
subdivision to apply. The benefit of this feature is that you can create very simple geometry,
manipulate it in the software, and then render it out as a detailed high-resolution
model. There are two SubD-Type options in Modeler: the original Subpatch mode that
existed in earlier versions of LightWave, and a new option called Catmull-Clark.
To work in Subpatch mode, select it from the SubD-Type drop-down and press the Tab
key. You??™ll see your model change into curved surfaces, and a representative cage will
appear around it. To revert to standard model view, press the Tab key again. In order to
use the Subpatch SubD-Type, your object must have three or four vertices. That means a
polygon can??™t be made up of five sides or more. For that matter, it can??™t be made up of
one or two sides either.
Every once in a while, however, there??™s no way to reduce your entire model to polygons
with just three or four vertices. It??™s for just those occasions that LightWave v9 added the
SubD-Type called Catmull-Clark.
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