RadeonRays for collision detection between deformable objects

[korzen]

trafficstars

Hi, do you think this SDK could be applied in physically-based simulation to detect collisions between two deformable objects (aka softbodies)? More specifically:

1. To intersect simple spheres instead of rays vs triangles wrapped in AABB tree
2. To intersect one AABB vs another AABB
3. Can the AABB tree of a deformable mesh be efficiently refitted on the GPU every frame (it does not have to be fully/partially rebuilt, just a bottom-up propagation of bounds size change)

Thanks!

[ilyas-gazizov]

Hi, sorry for the delay in reply. Currently 1 and 2 are not supported in current API of the library. 3 is supported with update operation of geometry. All update operations are performed on GPU as well as intersect queries.

[korzen]

Thank you for your reply. I guess adding 1. (i.e. sphere-triangle check or rather calculations of closest distance from a point to a triangle) to the API would not be much work and could result in some very interesting applications outside graphics (e.g. my field is surgical simulation). Thanks!

[BluePrintRandom]

kdtree can return all elements inside a range

https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/tr-2008-52.pdf