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expunwrap [2020/08/17 13:36] – croftexpunwrap [2023/04/03 18:35] (current) – steph.jorgensen
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 During [[expstaticmesh|static mesh exporting]] when you enable the option "Unwrap UVs", you will be presented with an additional dialog that gives you control over the unwrapping of the tree into a texture atlas or UDIM. "Unwrapping" the tree means to put each separate "chunk" of a material used into one large texture, though you can control whether different chunks can share space or not to avoid texture resolution problems. During [[expstaticmesh|static mesh exporting]] when you enable the option "Unwrap UVs", you will be presented with an additional dialog that gives you control over the unwrapping of the tree into a texture atlas or UDIM. "Unwrapping" the tree means to put each separate "chunk" of a material used into one large texture, though you can control whether different chunks can share space or not to avoid texture resolution problems.
  
-{{ ::unwrapuvdialog.png?nolink&400 |}}+{{unwrapuvdialog.png?nolink&400}}
  
  
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 Depending on the setting in "Control by", there will be one or more options in this section. For all the chunks that belong to a particular group, you can choose to stack or unwrap them. "Stack" means they share UV space in one large island in the atlas. To fully "unwrap" a group means that every chunk is placed in its own island in the atlas.  Depending on the setting in "Control by", there will be one or more options in this section. For all the chunks that belong to a particular group, you can choose to stack or unwrap them. "Stack" means they share UV space in one large island in the atlas. To fully "unwrap" a group means that every chunk is placed in its own island in the atlas. 
  
-The "Scale" slider lets you adjust the relative scale of a group of chunkscompared to other groups. The final relative scale of a chunk is based on the "Area to favor" setting, the texture size, the surface area used by this group on the tree, any scales on the material asset, and finally this scale setting.+The "Scale" slider lets you adjust the relative scale of a group of chunks compared to other groups. The final relative scale of a chunk is based on the "Area to favor" setting, the texture size, the surface area used by this group on the tree, any scales on the material asset, and finally this scale setting.
  
  
 =====Examples===== =====Examples=====
  
 +The same tree can be exporting in many different ways to accomplish different things post-export. The best texture resolution when unwrapping can be obtained by stacking everything. 
 +
 +Another common export is when you wish to sculpt a trunk in a third-party application. In this case you would want branches and caps completely unwrapped into unique UVs, but everything else could still stack to save on texture resolution. 
 +
 +And finally if you wish to have complete freedom when painting on a tree mesh, you could unwrap everything into a completely unique UV mapping.
 +
 +<WRAP group>
 +<WRAP third column centeralign>
 +{{ ::unwrap1.png?nolink&300 |}}
 +All stacked
 +</WRAP>
 +<WRAP third column centeralign>
 +{{ ::unwrap2.png?nolink&300 |}}
 +Branches unwrapped
 +</WRAP>
 +<WRAP third column centeralign>
 +{{ ::unwrap3.png?nolink&300 |}}
 +All unwrapped
 +</WRAP>
 +</WRAP>