ok, no need for such complexity. i can live with this
this may seem hacking or abusing but, am i safe if i modify destination vertices outside of vertex controller ?
i use "preserve source mesh" mode, so source mesh remains the same all the time. seems as dest also remains same as i left last time. so if i modify dest somewhere else then call mesh.applyVertexController() to notify jPCT mesh has changed, will it be ok ?
btw, in "preserve source mesh" mode, source vertices arent copied again and again i suppose ?