CODEWITHSUNDEEP
javascriptpython3dgeometryraycasting
Niall McKenna
Niall McKenna

Reputation: 181

How to cast a ray and detect intersecting points on a 3D object with Python?

I have an array of 3D coordinates that make up a 3D object (a sphere in this example)

enter image description here

I want to cast a ray from the origin along a vector and calculate any points at which the ray intersects with the 3D object.

In this diagram I want to find point 1 and point 2.

I am using Python, so I would prefer an approach that I can use Python with.

Any suggestions would be appreciated.

Upvotes: 1

Views: 2722

Answers (1)

MBo
MBo

Reputation: 80187

Find what point is the closest to the ray using line-point distance.

Find mesh cells around that point and calculate line-triangle intersection to get intersection point(s).

If you have sphere equation (center and radius) - it is simpler to calculate exact intersections

Upvotes: 2

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