setMapVert not showing color changes in viewport

[tagopinath]

Hello Everybody,

3ds Max SDK :

I have a mesh object created using the Mesh class. I am trying to set face colors using setMapVert for the mesh. 

I found some code in MaxScript (https://forums.cgsociety.org/t/vertex-color-in-viewport-max-2009/1563863/4), when I tried this without converting into either poly or mesh, then colors changes are not happening. If I convert my mesh into poly or mesh, then, the script is working fine. 

I tried to implement this using SDK, but i am getting the same result which i got while running the script (not converting to poly or mesh)

The following codes, added as a script (for testing)

setCVertMode $ on
$.vertexColorType = 5
$.vertexColorMapChannel = 1
meshop.setmapsupport $.mesh 1 on
meshop.applyuvwmap $.mesh #face channel:1

The following, i have added in sdk.

the_mesh.setMapVert(1, the_mesh.faces[fIdx].v[0], clr);
the_mesh.setMapVert(1, the_mesh.faces[fIdx].v[1], clr);
the_mesh.setMapVert(1, the_mesh.faces[fIdx].v[2], clr);

I am updating the mesh and calling redrawviews also.

Is this the method of implementing? What i am doing wrong?

can anyone please suggest me ideas how to implement this logic?

Regards,

Gopinath.

[tagopinath · Accepted solution]

Hello,

I was able to solve this. No need for below two lines

meshop.setmapsupport $.mesh 1 on 
meshop.applyuvwmap $.mesh #face channel:1

and, i need to change the mapping channel (say, some 6 or 7) and for that, i need to set texture vertices and set default color.

the other codes mentioned, works fine.

Thanks again.

Regards,

Gopi.