How to get correct position of responded current mouse cursor - matterport

Hi, Talented three.js developers. I need your help.
I am building a matterport using three.js, but have a problem to get correct position which is related with current mouse cursor. If you have experienced in matterport project, you can easily imagine what I want.
I have 3d model and FOV data and skyboxs. I want many friends who can work with me. Thanks.