View Full Version : Intersection of Ray and y-plane

03-14-2017, 11:25 AM
So i have a normalized vector (ray), that is pointing somewhere. now i want to determine a 3d point on the ray, where y (up/down) is equal to zero. basically an intersection with a plane, on Y=0.
how would i do this?

03-15-2017, 01:33 PM
Help, please. I cant find anything about getting the xyz coordinates of intersection between a line and a plane.

03-15-2017, 11:56 PM
Here (http://www.ambrsoft.com/TrigoCalc/Plan3D/PlaneLineIntersection_.htm) and here (https://en.wikipedia.org/wiki/Line%E2%80%93plane_intersection) are links which treat about intersections. They don't specifically deal about axis-aligned planes, but if you understand the reasoning, that will certainly help you.
One other thing that might help you. From the plane equation ax+by+cz+d=0, (a,b,c) are the 3 components of the normal to this plane.