If i want to export gltf（jme mesh） How can i do

[xuan]

Possibly exporting to .OBJ would be easier, then you can use blender to convert it.
Here’s an old thread you could use for inspiration:

Export mesh to .obj

How it is possible to save a mesh to a .obj file? My problem is I’ve a easy model. I have only the vertices, indices and normals. No lights, material, ambient and so on. If there is no exporter, then someone can help me writing an obj file. I have not so much knowledge about 3d programming.