Intersection of line with cube and knowing the point of intersection.

Question

Hello everyone,

description

1. lines are originating from origin(0,0,0).
2. lines are at some random angle to the Normal of Top face of the cube.
3. if the lines are intersecting cube, calculate the intersection point.
4. mainly I want to know how much distance the line traveled inside the cube.

I don't know exactly which approach I should take, I would be pleased and thankful if someone could guide me to the right direction, to use OpenGL, DirectX or some other library, for C#. Some example or sample will be appreciated.

Answer 1

Check out reply to previous question Efficient maths algorithm to calculate intersections