Textures on capped faces only displays the color

[Swiftwork]

Hi,

I have ran into the issue that capped faces (CAP_START, CAP_END, CAP_ALL) will only display a diffuse color and not a texture http://www.babylonjs-playground.com/#RF9W9#370. The issue seems to persist at least on ExtrudedShapes and Tubes. My theory is that the face UVs aren't properly calculated. Anyone know of a solution or is this a bug?

Kind Regards

Swiftwork

[JohnK]

It is all to do with extrusion keeping the number of vertices to a minimum and so shared normals and uvs among vertices. The texture is displayed on the caps however because of the way the uvs are shared you do get a small area (perhaps one pixel worth) shared across the cap. These explain in more detail:

http://babylonjsguide.github.io/advanced/Custom

http://babylonjsguide.github.io/advanced/Normals

http://babylonjsguide.github.io/advanced/Facets

If you are just using cuboids then the MeshBuilder method is preferable to build your box as this creates the boxes with separate faces and hence separate uvs

For example http://www.babylonjs-playground.com/#RF9W9#372

 (Note what is being subtracted from what is swapped in line 28 - can see why this way works in my PG but not why your way round in yours?)

You might also like to check out

https://doc.babylonjs.com/tutorials/Mesh_CreateXXX_Methods_With_Options_Parameter

https://doc.babylonjs.com/tutorials/CreateBox_Per_Face_Textures_And_Colors

[adam]

This is a bug with extrusion though, right?

[Swiftwork]

Then it was as I expected @JohnK, I also found that it was easier using other parametric shapes and then scaling them up or down to get the same frame effect.

@adam, I am suspecting it might be an oversight, but it might be a desired one for some, however I am not sure how ^^

Thank you for your help.