intersectionWithPlane Method

Return the intersection parameter of the line defined by the ray with a plane.

• Stores the point of intersection in the result point (if passed as a parameter) and returns the parameter along the ray where the intersection occurs. If we call the parameter 'f' then the point of intersection would be ray.origin + f * ray.direction. Therefore:
  • if ray intersects the plane at its origin, the function returns f = 0.
  • if intersects at ray.origin + ray.direction, the function returns f = 1.
  • if intersects behind the ray origin, the function returns f < 0.
  • if intersects after ray.origin + ray.direction, the function returns f > 1.
• Returns undefined if the ray and plane are parallel or coplanar.

intersectionWithPlane(plane: Plane3dByOriginAndUnitNormal, result?: Point3d): undefined | number

Returns - undefined | number

Defined in

• geometry3d/Ray3d.ts Line 351