Make 3D textures in tools

[Rafalom]

Hello community, I need help to build a picture of 3D textures in my tool NPC and ITEM. I do not know how I can start, thanks for the help.

 

Example:

[Agility]

decode texture/model, find UV in texture and open it with directx

[Rafalom]

decode texture/model, find UV in texture and open it with directx

 

You can give an example in C, source?, I'm not sure how.