Hey everyone, today I'm going to show you how to UV map an OBJ file in Nuke to create seamless textures for your 3D models. UV mapping is essential for adding detailed textures to your 3D models, and Nuke provides a powerful set of tools for this process. Here's how to do it:

Step 1: Import your OBJ file into Nuke by using the Read node. Make sure your OBJ file also includes a corresponding MTL file for the textures.

Step 2: Create a new 3D scene using the ScanlineRender node. Connect the ScanlineRender node to the Read node containing your OBJ file.

Step 3: In the Properties panel of the ScanlineRender node, locate the Geometry tab and click on the 'UV' button to reveal the UV mapping options.

Step 4: Now, you can use the UV Project node to create UV maps for your 3D model. Connect the ScanlineRender node to the UV Project node, and then connect the UV Project node to a Shuffle node.

Step 5: In the Properties panel of the UV Project node, you can adjust the UV projection type, such as Planar, Cylindrical, or Spherical, to best fit your model's geometry.

Step 6: Once you've selected the desired UV projection type, use the Shuffle node to view and adjust the UV map in the Viewer.

Step 7: You can further refine and adjust the UV map using the Transform node. Connect the Shuffle node to the Transform node, and then experiment with scaling, rotating, and translating the UV map to achieve the desired texture alignment.

Step 8: Finally, connect the Transform node to a Write node to export the UV-mapped OBJ file with the seamless textures.

And that's it! You've successfully UV mapped an OBJ file in Nuke to create seamless textures for your 3D models. Remember to save your Nuke script and OBJ file for future reference. Thanks for watching and happy texturing!