size of texture on mesh

Also, when you talk about "uniform scale" do you mean that all islands have to have the same scaling -or- that each island should have the same size they have in the 3d space ?

Please don't hesitate to post screenshots it helps a lot to understand.

Hi Lauren,

I think a screenshot should be a good idea.

In order to post it, you have to upload your image to a website like hostingpics, once it's done you'll get some urls you can copy to your message.

Example:
to have:


I have to copy the following text I just get from hostingpics:
[url=http://www.hostingpics.net/viewer.php?id=838915logo256x256.png][img]http://img11.hostingpics.net/thumbs/mini_838915logo256x256.png[/img][/url]

Thank you for the screenshot, it really helps to understand your problem.
Remi is the one who could answer you, but I'll try to help you because he can't for now.

So, in Unfold3D CAD, when you do an Unfold the algorithms [try to] keep the size of each edge at 1:1. But Blender unwrap the mesh in the normalized space [0;1].
What we are going to do is to tell Unfold3D to crop the UVs into the normalized space.

First, when we unfold the mesh we have to define the size of the UV tile to fit the map.
Look at my example (with a sphere), I have used the "Fit" button and then I manually define the size of the tile on u and v dimensions to 4.5 to have a squared tile.


Then we have to export the whole thing as an obj file using the exporter (File->Export...) and tell the exporter to crop the UVs.
Look at my example:
1. Choose where you want to save and the name of generated files
2. Select "Current UV tile"
3. Set the size you want for the exported picture
4. Tick the "Obj file (.cropped.obj)"
5. Tick the type of picture file you need (.bmp in my example)
Then press Export files, and it's done. When you import your file cropped into Blender it should work.


Maybe there is a shorter way to get to this result, when Remi will come back he will tell you.
But I hope it will help in the meantime.

Let me know if it works, or if you need anything else.

Hey Remi and Thierry.

I am glad the screen shots explain my problem better.

I have a library of materials that are already saved and are applied to new 3D models as they are made. Previously we unwrapped our 3D models using Blender. We do not want to edit the materials.

Our materials use images to make textures, and the problem is the normals. If I can solve this problem by changing the settings in Unfold 3D that would be great. The left and right screen shots above are of the same materials. The left image was unwrapped in Blender, the right was unwrapped in Unfold3D.

I am trying to follow Thierry's instructions to export the unwrapped mesh so the normals are smaller, but I am confused. What do you mean the type of picture I need? I need the mesh to be unwrapped?

And Remi, you want an extra screen shot of the unwrapped UV's? How should it be different from the last one?

Thanks,
Lauren

Hi, here are the screen shots. Any idea?

Thanks! Replying now