Here is a list of all namespace enum values with links to the namespace documentation for each enum value:

TEXTURE_TYPE_CUBE_BACK : tinyobj
TEXTURE_TYPE_CUBE_BOTTOM : tinyobj
TEXTURE_TYPE_CUBE_FRONT : tinyobj
TEXTURE_TYPE_CUBE_LEFT : tinyobj
TEXTURE_TYPE_CUBE_RIGHT : tinyobj
TEXTURE_TYPE_CUBE_TOP : tinyobj
TEXTURE_TYPE_NONE : tinyobj
TEXTURE_TYPE_SPHERE : tinyobj