Importing OBJ into Blender - rotated - way to fix it?

[dignifiedweb]

I love your tool, I'm no 3D modeller, but have a lot of fun with it. That being said, I'm a new person for 3D modelling software.

Am I missing something? Any time I export to OBJ files and then import into blender, it shows a rotation. Is there something I can do in Gravity sketch to ensure my exported model is facing the correct orientation?

For instance, if I made a wine glass, I would want the stem to be on the bottom, glass to be on top, but want it to be perfectly flat with no rotations. When importing into something like Unity after, having the rotation applied in blender comes through into Unity.

I basically want to design something in Gravity sketch --> Import into blender and create texture map --> import into unity.

I want to also edit the texture after with substance painter, but at that point, I'd like it to be importable into unity without rotation problems. Any ideas what I'm missing? Thank very much!

[danny boy]

This is a bit of a common problem with 3D modelling - we want to provide some more advanced import and export options to help with the file interchange in a future update.

Basically some software uses the convention that the "Y" axis is UP (Unity, Gravity Sketch etc) whereas other software use the "Z" axis as UP (Blender etc). CAD tools tend to favour Z axis up (right handed) but because we are heavily tied to unity, we use Y UP (Left Handed)

With blender being the opposite convention from Unity and GS, there will be a rotation at both import and export.

When you import, It should be just a simple 90 degree rotation of the entire model about the X axis, blender has various snapping features that should make this straightforward. We plan to add this as a feature to the exporter soon.

When you export from blender, the "Export OBJ" dialogue has options to enable a different type of co-ordinate system to better suit unity

[dignifiedweb]

Thank you so much for the quick reply!

I just gave your suggestion a try and it worked like a charm! Thank you! So, just to clarify, I think your export works fine functionally, but it was just me not understanding importing into unity proper.

Thank you so much!

I also checked a direct import from gravity sketch to Unity (which I hadn't done) and there were no rotations, so that was a nice sanity check for me. I like to have the directions in the corect orientation I'm expecting, since it helps for physics later. Thank you!