i have my work done in zbrush ,but now for some reason i must turn it into PointCloud,did there any plugin or something else will helpful? anyone just a word ,thankU
There’s no plugin for this. A point cloud is just a collection of unconnected vertices. For the OBJ format you could create one by exporting from ZBrush and then editing in a Text editor so that everything except the vertex references is removed. (The vertices all start with ‘v’ only and have three numbers like this:
v 0.63805427 0.63805304 -0.63805312
However, if your model has a lot of points you won’t find this easy, at least, not with Notepad. 
You may be able to use Meshlab:
http://meshlab.sourceforge.net/
I’ve not tried it but is seems to be capable of exporting PLY and OBJ point clouds.
HTH,
Thankyou very much,i can now done my work