Member Ridnic Posted July 8, 2016 Member Report Share Posted July 8, 2016 Hi Guys, Glad to join you here! I just spend my first few days doing tutorials and getting used to the program. Personally I work as a 3D Artist with Cinema4D und ZBrush and I have been looking for some good UV/Texture solution for some time and finally made my decision. What I am struggling with right now is some kind of workflow issue I guess. All I want to do is take my Model from Cinema4D, create UVs in 3D Coat and paint it within PBR Materials. But it seems there is some weird Phong Shading and/or the curvature Map that is generated doesnt work well. Same goes for the AO generation. I got a picture of the Model in Cinema4D and the second has a Smart Material applied after Quick n Dirty UVs from Autoseam > Unwrap. When I looked for that kind of problem I did not find any solution. I dont want to sculpt on it first either. How can I get my edges to be treated as such and smart materials to work properly on imported low poly models? Best regards, Ridnic Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 Okay, so after a lot of try and Error I found at least a way. When calculating a curvature Map the normals/edge detection doesnt seem to be the most important factor. Maybe that was my mistake. Assuming that it would work this way. The Topology is key here. I used edge loops around the edges i wanted to have crisp. Similar to having a "smoothing" Object such as Dynamic Subdivision in ZBrush. With those loops the Cavity and AO Map generation was very clean. I was hoping to be able to use Low Poly Meshes. With those Loops it gets more dense Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 11, 2016 Report Share Posted July 11, 2016 Can you export the model with sharp edges assigned ? Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 Not sure how out of Cinema4D. The applied Phong tag which applies an Edge Break at a certain Angle is ignored. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 11, 2016 Report Share Posted July 11, 2016 Searching for Smooth groups equivalent, i found this post Phong smoothing angle is just an automated way to break phong edges (literally this is all it does), so it's a little easier than manually selecting edges and breaking them that is all. You don't have the same workflow in Cinema, but you can do this in a semi automated way using he "Phong Break Selection" tool in Cinema to select the edges based on whatever angle you want and then just breaking them. Hope this help Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 I tried to manually break the edges. But after the import in 3DCoat there are gone :-(. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 11, 2016 Report Share Posted July 11, 2016 Smoothing groups are supported via OBJ format. But you need to export normals also from your 3D-model app. 3D-Coat uses normals in OBJ file to recover smoothing groups. Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 I am using the C4D OBJ Exporter and it seems that it does not support Normal Export. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 11, 2016 Report Share Posted July 11, 2016 Hope this help Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 I am Using Cinema 4D R17 on a mac and there is only a R17 Version for windows. I could give the old one a try.. :S Btw thanks for all your help and ideas! I would be soooooo lost otherwise :-). Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 11, 2016 Report Share Posted July 11, 2016 Is this version -r15- compatible ? yw, glad too help Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 The Applink itself works. But it merges all Meshes/Objects into one when for example exported to the retopo room. And after unwrapping and baking i still have the same issue. Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 11, 2016 Report Share Posted July 11, 2016 Assign different material to meshes can help ? Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 11, 2016 Author Member Report Share Posted July 11, 2016 It only splits my generated UV Maps in a weird/broken manner. The shading problem remains Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 12, 2016 Author Member Report Share Posted July 12, 2016 I tried to import an FBX and Collada today and nothing happened at all.. :S Getting closer to desperation >.< Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 12, 2016 Report Share Posted July 12, 2016 could you share the model to take a look ? do you deleted the horizontal faces non visible ? -as example, the cylinder horizontal lower base in contact with the floor- Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 12, 2016 Author Member Report Share Posted July 12, 2016 Nope, its two closed objects. I deleted the object in between for the sake of simplicity. Here is the exported OBJ out of C4D r17. EdgeBreak08.obj Quote Link to comment Share on other sites More sharing options...
Carlosan Posted July 12, 2016 Report Share Posted July 12, 2016 I shared it with the devs so they can have a look Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 13, 2016 Author Member Report Share Posted July 13, 2016 Thank you! :-) Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 14, 2016 Author Member Report Share Posted July 14, 2016 (edited) Lil Update: I opened the exported OBJ File in Rhino, Blender an Cinema4D. All showed the Object perfectly. In Cinema4D itself, the imported Object had a Normal Tag applied. Maybe that helps in some way. Edited July 14, 2016 by Ridnic Quote Link to comment Share on other sites More sharing options...
Member Ridnic Posted July 14, 2016 Author Member Report Share Posted July 14, 2016 Now i tried the OBJ Exporter riptide, a special OBJ PlugIn for Cinema4D, but the problem remains. I am starting to think that this is a 3D Coat problem :S. I feels sad, because I cannot do, what I bought this program for. I wanna get started sooooo badly and I really like 3D Coat :(. Quote Link to comment Share on other sites More sharing options...
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