Difference in Flattened and Morphed UV's issue??

[Rucy]

Operating System Windows 8.1 64-bit CPU Intel Core i7 @ 2.50GHz 48 °C Haswell 22nm Technology RAM 8.00GB Single-Channel DDR3 @ 798MHz (11-11-11-28) Motherboard GIGABYTE Q2556N v2 (SOCKET 0) 14 °C Graphics Generic PnP Monitor (1366x768@60Hz) Intel HD Graphics 4600 (CLEVO/KAPOK Computer) 2047MB NVIDIA GeForce 840M (CLEVO/KAPOK Computer) 43 °C

Hi, I am having an issue with the UV’s in the attached pics, when I flatten the UV in UVMaster the UV’s look fine, when I Morph the UV the UV’s look messed up. The model hasn’t been changed or altered in any way between trying flatten and morph. Any ideas what is happening here. Using Zbrush 4.7 P3 64bit.

Thx in advance

Rucy
Low poly model
Flattened Model
Morphed Model

Attachments

[Rucy]

So it was a simple fix, I just flattened again and slightly moved the two parts that were effected and it fixed the issue. Not sure why it happened though.

[marcus_civis]

Typically that happens when the UVs are on the exact border of the UV space. The points get wrapped across causing the error displayed in the morphed UVs. This would also occur in any maps generated. UV master should make sure it doesn’t happen automatically but if you change the UVs, moving or scaling the UVs down a touch should solve it (as you found).

[Rucy]

Thx Marcus, I will keep a closer eye on that in the future!