Forum: Carrara


Subject: Texture/UV mapping an 'S'

ra_bolger opened this issue on Jan 05, 2007 ยท 14 posts


MarkBremmer posted Fri, 05 January 2007 at 9:52 AM

UV mapping is a wild card when importing from other apps because UVs aren't respected in .step formats. (that's one of the reasons I didn't really cover it in my tutorials - there are just so many variables that impact the results) Soooooooo, the version I showed above was creatd in Carrara so it maps "correctly" with no additional fussing around. Without seeing your .step object, I suspect that you'll be best off creating a custom box UV and then rearranging the vertexes of the object in the UV editor for a best-fit. If your object is exported to .step in quads (square polygons), it will probably "split" correctly making your job easier. If it's triangulated (like most of the .step files I've worked with), it could get a little messy. Splitting an imported object in Carrara in the UV mapping room is not always easy. Options- There are a couple of other things you can try before you mess around with creating a custom UV map. 1. In the top level of the multi-channel mixer for the hose object, convert the pull-down to Flat Mapping. This will slide the multichannel mixer underneath the Flat mapping option. Then select Whole Object and Ignore Normals. Try your texture and see how it behaves. 2. If that doesn't work as planned, try un-checking Ignore Normals and see if that behaves better. 3. Lastly, if that doesn't satisfy your needs, try one of the other modes under Projection mapping like cylinder or sphere. 4. Sometimes I'll import an object into Hexagon which has much better UV controls and remap the object there and then bring it into Carrara. Imported files from CAD programs have caused me to get gray hair prematurely. There are always issues. Mark