Problem Statement

Finding the intersection of an infinite ray with a plane in 3D is an important topic in collision detection.

Find the point of intersection for the infinite ray with direction   (0, -1, -1)   passing through position   (0, 0, 10)   with the infinite plane with a normal vector of   (0, 0, 1)   and which passes through [0, 0, 5].

Let's start with the solution:

F intersection_point(ray_direction, ray_point, plane_normal, plane_point)
   R ray_point - ray_direction * dot(ray_point - plane_point, plane_normal) / dot(ray_direction, plane_normal)

print(‘The ray intersects the plane at ’intersection_point((0.0, -1.0, -1.0), (0.0, 0.0, 10.0), (0.0, 0.0, 1.0), (0.0, 0.0, 5.0)))