I am trying to make 3D drawing software. I wanted to have the drag feature so I am using object picking using the OBB algorithm. I am facing problems in understanding the algorithm, and my implementation thus is having bugs.
How do I implement object picking, using OBB in OpenGL? As I am new to OpenGL (free-glut library), a step by step explanation would be helpful.
I am not able to understand what t1 and t2 mean and how the algorithm is working. If you explain the algorithm that would be enough.