Lecture 9: Intro to Ray-Tracing & Accelerating Ray-Scene Intersection (21)
Sicheng-Pan
For the detailed models with large amounts of meshes (which are mostly on different planes), how do we efficiently calculate the ray intersection?
Spectato54
When considering ray intersection with the triangle, would it be best to imagine the interaction taking place on a 3D system? I assume it would be, but I navigated all of Assignment 1 as a 2D plane and I think that made implementation a little more difficult.
sZwX74
@Spectao54 I think you would have to consider it as a 3D system for the ray to intersect the triangle at a point, otherwise in a 2D system the ray would intersect the triangle at an entire line. Once you have the intersection point, I think it's fine to treat the system as a 2D plane with a triangle and a point, given you project your coordinates from 3-space down to 2-space.
For the detailed models with large amounts of meshes (which are mostly on different planes), how do we efficiently calculate the ray intersection?
When considering ray intersection with the triangle, would it be best to imagine the interaction taking place on a 3D system? I assume it would be, but I navigated all of Assignment 1 as a 2D plane and I think that made implementation a little more difficult.
@Spectao54 I think you would have to consider it as a 3D system for the ray to intersect the triangle at a point, otherwise in a 2D system the ray would intersect the triangle at an entire line. Once you have the intersection point, I think it's fine to treat the system as a 2D plane with a triangle and a point, given you project your coordinates from 3-space down to 2-space.