A UV map is the flat representation of the surface of a 3D model, typically used to display textures. The process of creating a UV map is called UV unwrapping and can be automated using InstaLOD. Additionally, the
UV Pack mesh operation can pack the UV shells into an alternative layout without unwrapping to preserve their shell shapes. This can be done to pack them in a more efficient layout.
The following overviews the settings for the
UV Unwrap mesh operation:
UV Unwrap mesh operation automatically packs the generated UVs correctly using the internal UV packer. The
UV Pack Mesh Operation can, however, be used as a standalone feature to pack existing UVs more efficiently. The following overviews the settings for the
UV Pack mesh operation:
Unwrap Strategies use different algorithms to optimize the layout of hardsurface and organic models.
Hardsurface Axial algorithm uses an axial projection and stitches individual UV shells together to generate fewer and larger patches than other software solutions, as can be seen below. This technique works very well for hard surface models that have flat surfaces pointing towards the world-space axis.
Example: Low poly cylinder - upright position.
Left: Hardsurface Axial (InstaLOD) VS Right: Automatic Unwrap (Maya)
Hardsurface Angle algorithm evaluates the scene and projects UVs from different world-space angles. This Technique works very well for hard surface models that don't have their surfaces pointing directly towards the world-space axis.
Example: Low poly cylinder - rotated by 45 degrees.
Left: Hardsurface Angle (InstaLOD) VS Right: Automatic Unwrap (Autodesk Maya)
Organic algorithm follows the edge flow of models when generating UVs to improve the unwrapping of organic models. Using the Organic mode typically generates larger and fewer UV shells than the other Unwrap Strategies.
Example: Low poly sphere
Left: Organic (InstaLOD) VS Right: Automatic Unwrap (Autodesk Maya)
Automatic algorithm evaluates the scene and chooses which of the available algorithms is best to apply to the scene (tendency towards