Select material in 3D

There is a puzzle called “get material” that should do the trick. You can add it to an onclick event.

example using puzzles: screen shot attached

That is correct. Your original post did not specify that the object had more than one texture assigned to it.

To give you a more accurate method could you share the model or image of the model and what you are trying to achieve.

Depending on your needs, it may be better to break the model apart into clickable targets than try to calculate where a user is clicking and then determine the material. Not that it’s impossible, to do, just a matter of workload vs other potential options.

Ok…first the model looks really nice but its topology is awful. It appears to be a scan of a shoe rather than modeled by hand / in distinct parts.

My first suggestion would be to fix the topology of the model and get it into quads. See: https://www.soft8soft.com/docs/manual/en/introduction/Optimizing-WebGL-performance.html and while you are doing that separate the objects into paintable parts.

Can you send the app manager project file and the blend… I don’t need all the HTML stuff unless its easier. It will save me alot of time rather than pulling it all down and piecing it together.

Boundary edges do not have to altered when the object is separated but to maintain a smooth edge it would be best to do on a clean/smooth edge vs a jagged triangulated edge for texture mapping purposes.

Just grab some adjacent faces in edit mode and separate them as a separate object. You should see no change to your geometry.

it’s possible to detect, select and make outlined any material on any multi-material mesh using raycasting.
https://v3d.net/dva