I tried ./intersections ../data/knight.obj ../data/cheburashka.obj
I got the following.. It seems like the brute force is only using triangle_triangle_intersection function, but for that function, I basically just run 6 calls to the ray_intersect_triangle... It should not be that slow...What could be the reason?

Triangle Mesh Intersection Detection

|VA| 2002
|FA| 4000

|VB| 6669
|FB| 13334

Is the x y z value in min corner always smaller than the value in the max corner?

I got the result below:

Ray Triangle Mesh Intersection

|V| 2050
|F| 4096

Firing 1000 rays...

I am confused by the Distance Query section, should we use bfs for AABBTree_ray_intersect.cpp? If so, what should we use as the distance for deciding the left or right child? I suppose the t value in ray_intersect_box should do the job, but the function is not returning it.

I implemented it following the pseudo code on the textbook, but I found the runtime not very satisfying, it's even slower than the brute force.

Depth-first search result:

Ray Triangle Mesh Intersection

|V| 2050
|F| 4096

Firing 1000 rays...

I got an error saying YOU_MIXED_MATRICES_OF_DIFFERENT_SIZES at compile time. What could be the cause?

When I try to run rays.cpp in Visual Studio 2019, I get this compile time error that occurs in visualize_aabbtree.h on line 135. After I commented this line out, my code works properly and the Viewer properly renders my AABB tree. However, I think the background color is different than the example pictures.

I am not sure what part of my code causes this error to happen.

The error trace is
CMake Error at /usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:146 (message):
Could NOT find OpenGL (missing: OPENGL_opengl_LIBRARY OPENGL_glx_LIBRARY)
Call Stack (most recent call first):
/usr/share/cmake-3.16/Modules/FindPackageHandleStandardArgs.cmake:393 (_FPHSA_FAILURE_MESSAGE)
/usr/share/cmake-3.16/Modules/FindOpenGL.cmake:397 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
libigl/cmake/libigl.cmake:321 (find_package)
cmake/FindLIBIGL.cmake:36 (include)
CMakeLists.txt:10 (find_package)

I'm sure that I've installed all the packages specified in the assignments.