#341 transparent mesh

[yes]

I work with PLY file format

My application gets point cloud and “envelope” it with mesh (vertices and faces).

The envelope mesh and the point cloud are saved in different PLY files.

I want to present the envelope and the point cloud is same view using meshlab where the envelope should be transparent so the points cloud shouldn't be hidden by it.

I add alpha property to the vertex but it still seems opaque when I open it in meshlab.

Moreover, when I open the points cloud file, only the vertex of the envelope is presented.

header file of envelope :
ply
format ascii 1.0
element vertex 1954
property float x
property float y
property float z
property float nx
property float ny
property float nz
property uchar red
property uchar green
property uchar blue
property uchar alpha
element face 3908
property list uchar int vertex_index
end_header