Issue with merging objects by its geometries using mergeBufferGeometries()

[JohnConstantine]

@Mugen87

geometry.computeBoundingSphere();

Hi Mugen87! Im using this class to merge geometries to one geometry in this link

Question about Multiple mesh in group add single one texture

Hi guys! I have a question,I assemble several meshes into one ‘mesh’ (group),looks like this [图片] now i add texture to them separately ,looks like this now [图片] its not a good looking cause we can see the line clearly Can I just make this a better looking?

But after merge all the geometries,it still looks like more then one geometry when im apply texture
can you give me some guidances?