Member netgoblin Posted September 25, 2016 Member Report Share Posted September 25, 2016 So, I have my model already unwrapped in the UV room. Once I add extra UV seam, I need to unwrap certain part of my model again. How to reunwrap certain island? The way I do: Add new temporary UV set. Move selected island to the new UV set. Unwrap everything there. Unify UV (thnx God!). Remove temporary UV set. Too robust. Is there a better way to do that? Quote Link to comment Share on other sites More sharing options...
Contributor ajz3d Posted September 25, 2016 Contributor Report Share Posted September 25, 2016 (edited) When you select a UV island you want to re-unwrap, choose To GU, To ABF++ or To LSCM to unwrap it with the selected algorithm without altering other islands. You will still have to rotate, translate and scale your island into position. Unfortunately layout and auto scale affect all UV islands. But if the position, rotation and scale of other islands don't matter for you at this stage, then do shuffle, pack or auto-scale them. Edited September 25, 2016 by ajz3d 2 Quote Link to comment Share on other sites More sharing options...
Member netgoblin Posted September 25, 2016 Author Member Report Share Posted September 25, 2016 Thanks, ajz3d. This makes sense. I thought Unwrap uses some other algorithms... Quote Link to comment Share on other sites More sharing options...
Contributor ajz3d Posted September 25, 2016 Contributor Report Share Posted September 25, 2016 Unwrap by default applies Global Uniform (GU) algorithm to all islands within the current UV-Set. Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 3, 2020 Member Report Share Posted May 3, 2020 On 9/25/2016 at 4:02 PM, ajz3d said: When you select a UV island you want to re-unwrap, choose To GU, To ABF++ or To LSCM to unwrap it with the selected algorithm without altering other islands. You will still have to rotate, translate and scale your island into position. Unfortunately layout and auto scale affect all UV islands. But if the position, rotation and scale of other islands don't matter for you at this stage, then do shuffle, pack or auto-scale them. for me this causes a crash every time MacOS, 3D-Coat v4.9.42 (but older versions too) Any advice? --shift studio. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted May 3, 2020 Report Share Posted May 3, 2020 If your model have nGons, use the command Retopo > Remove nGons Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 4, 2020 Member Report Share Posted May 4, 2020 17 hours ago, Carlosan said: If your model have nGons, use the command Retopo > Remove nGons Thanks Carlosan! In recent case, the mesh is 181 quads, 0 triangles, 0 nGons. Moving them to their own retopo layer (but same UV) and calling 'To GU' is an instant crash. For a test, I exported the little mesh to .OBJ, started a new 3D Coat project as UV a mesh, Imported the .OBJ, selected the island (its already UV'd but needs to be redone) Call 'To GU' .... and ... Instant crash. I've attached the file incase you want to try. Thanks, Shift Studio. test.obj Quote Link to comment Share on other sites More sharing options...
Carlosan Posted May 4, 2020 Report Share Posted May 4, 2020 testing... normals are inverted, any reason ? Quote Link to comment Share on other sites More sharing options...
Carlosan Posted May 4, 2020 Report Share Posted May 4, 2020 Using win version cant replicate, sorry Testing original and inverted normals, mesh is ok and no crash My steps: Import the model for poly paint modeling on Paint Room. Switch to UV room Select island To GU no crash test.obj Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 4, 2020 Member Report Share Posted May 4, 2020 Thanks for testing Carlosan. this is the inside of a concave surface (a mouth) so thats why normals are facing in. I actually have several issues with 3D coat that I think are macOS related. But can't be sure as I don't have a windows machine to test. --shift studio. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted May 4, 2020 Report Share Posted May 4, 2020 Open this project and try GU please test.zip Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 4, 2020 Member Report Share Posted May 4, 2020 7 minutes ago, Carlosan said: Open this project and try GU please test.zip Hi Carlosan. Same results - instant crash. my steps - open, go to UV room, choose ToGU Crash. Another instant crash is with Autoretopo. Even wth a cube - instant crash. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted May 4, 2020 Report Share Posted May 4, 2020 I am reporting this issue. Quote Link to comment Share on other sites More sharing options...
SERGYI Posted May 7, 2020 Report Share Posted May 7, 2020 Hello! In "3DCoat 4.9.42A" for macOS (http://www.pilgway.com/~sergyi/3DCoat/3DCoat-4.9.42A.dmg) I have performed such steps: Paint UV Mapped Mesh > folder icon > your "test.obj" > Ok > room UV > click on small island in window UV Preview > button "To GU" works identical to "3DCoat" for Windows (like the other To ABF/LSCM/Planar). Old builds of "3DCoat" for macOS crashed because of problems in linking with MKL. But now the buttons "To ABF/GU/LSCM/Planar" should work. If they do not then try to rename the user data folder "Finder > Go > Home > 3D-CoatV49" into something like "----3D-CoatV49". Then start "3DCoat 4.9.42A" and perform the steps above. 1 Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 7, 2020 Member Report Share Posted May 7, 2020 On 5/4/2020 at 11:32 AM, Carlosan said: I am reporting this issue. thank you Carlosan! @SERGYI Thanks for looking into it. I will check (not today) and report back. --shift studio. Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 7, 2020 Member Report Share Posted May 7, 2020 @SERGYI I installed v4.9.42A and followed your instructions. I still had a crash. So I follows the second set of instructions (rename the data folder to '----3D-CoatV49') and followed instructions and it 3D coat crashes still. Any ideas? Thanks, Shift Studio. Quote Link to comment Share on other sites More sharing options...
SERGYI Posted May 14, 2020 Report Share Posted May 14, 2020 On 5/8/2020 at 12:46 AM, Shift Studio said: I still had a crash. Hello, Shift Studio! It turned out that actions To ABF/GU/LSCM/Planar crashed "3DCoat" under older macOS 10.13 (but they worked under new macOS 10.15). This was because MKL required an additional dynamic library under macOS 10.13 (it was not required under new macOS 10.15). I have uploaded new build http://www.pilgway.com/~sergyi/3DCoat/3DCoat-4.9.42C.dmg in which buttons To ABF/GU/LSCM/Planar should work under older macOS 10.13 and new macOS 10.15. 1 Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 14, 2020 Member Report Share Posted May 14, 2020 @SERGYIThanks for your work on this. I'm using macOS 10.14.6 (Mojave) I updated to 3D Coat 4.9.42C as advised. Same process. It crashed again. Maybe I need to rename the data folder? Thanks, Shift Studio. Quote Link to comment Share on other sites More sharing options...
SERGYI Posted May 15, 2020 Report Share Posted May 15, 2020 20 hours ago, Shift Studio said: macOS 10.14.6 (Mojave) Hello, Shift Studio! Please run Terminal. In Terminal enter: % cd /Applications/3DCoat-4.9.42C/ % ./3DCoat.app/Contents/MacOS/3DCoat This will run "3DCoat". Select Paint UV Mapped Mesh (Per-Pixel) > select "sphere" > Ok > click room "UV" > select any island in window "UV Preview" > click button "To GU". After the crash send me a screenshot (support PERIOD linux AT 3dcoat PERIOD com) of the Terminal window. There should be some message below the text "libpng warning: iCCP: known incorrect sRGB profile". Quote Link to comment Share on other sites More sharing options...
Member Shift Studio Posted May 15, 2020 Member Report Share Posted May 15, 2020 1 hour ago, SERGYI said: Hello, Shift Studio! Please run Terminal. In Terminal enter: % cd /Applications/3DCoat-4.9.42C/ % ./3DCoat.app/Contents/MacOS/3DCoat This will run "3DCoat". Select Paint UV Mapped Mesh (Per-Pixel) > select "sphere" > Ok > click room "UV" > select any island in window "UV Preview" > click button "To GU". After the crash send me a screenshot (support PERIOD linux AT 3dcoat PERIOD com) of the Terminal window. There should be some message below the text "libpng warning: iCCP: known incorrect sRGB profile". Hi Sergyi - I followed your instructions and sent you the Terminal screen after the crash. Please let me know if you don't get it. Hopefully it will help. --shift studio. 1 Quote Link to comment Share on other sites More sharing options...
Advanced Member ebitz Posted December 5, 2020 Advanced Member Report Share Posted December 5, 2020 (edited) sorry, wrong post Edited December 5, 2020 by ebitz answer posted elsewhere Quote Link to comment Share on other sites More sharing options...
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