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I'm trying to perform ray casting on a mesh using libgdx.

I found this code sample and it misses some explanations. What do these vectors stand for? What is globalIntersection and localIntersection?

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closed as off topic by Laurent Couvidou, Jari Komppa, Byte56, Trevor Powell, Josh Petrie Dec 7 '12 at 16:42

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1 Answer

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  • globalIntersection is the nearest intersection to the origin of the ray.
  • localIntersection is the intersection of a mesh with the ray.

The simplified algorithm is: 

iterating on the meshes:
    find the intersection of current mesh with ray (localIntersection)
    if intersection is near that globalIntersection:
        update globalIntersection with localIntersection
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