问题
I am rendering a 3D Obj model in iOS. http://metalbyexample.com/picking-hit-testing/. I am following the above Tutorial written by WM to find the hit point in the 3D model. Using the above link I can find the intersecting point with 3D model. I want to find the triangular polygon where I touched and I want to find the UV coordinates in the Image texture. How can I do that..
来源：https://stackoverflow.com/questions/56832882/get-the-triangular-polygon-where-the-ray-point-intersected