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Collision Detection Iris Merilo 2016 What, where? the - PowerPoint PPT Presentation

Mar 04, 2024 •242 likes •330 views

Collision Detection Iris Merilo 2016 What, where? the computational problem of detecting the intersection of two or more objects (multiple meshes, a mesh and a line (hitscan)) most often associated with its use in video games and

  1. Collision Detection Iris Merilo 2016

  2. What, where? ● the computational problem of detecting the intersection of two or more objects (multiple meshes, a mesh and a line (hitscan)) ● most often associated with its use in video games and other physical simulations (+ robotics etc)

  3. Goals In simulations: * making predictions for real-life scenarios * be as accurate as possible In computer games * mimic physics in a way that is acceptable (for that type of game) * do so cheaply, in real time Movies? Something in between, most likely… Self-driving cars? Not to cause accidents...

  4. How? Posteriori, discrete: * Increment the simulation in small steps, see whether anything is intersecting after each step. (most games) Priori, continuous: * Pre-calculate paths, then move objects Discrete collision detection is simpler, but more likely to produce errors (objects clipping through one another).

  5. Problems? ● Expensive - Reuse calculations. - Simplify objects. - Simplify calculations. Bounding boxes, contact caching, “Sleeping objects”, space partitioning, pruning...

  6. Whoops...

  7. Now what? Collision response? Deformation? Scattering? Deduct health points?

  8. Thank you!

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