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In rev 8547, I committed a small fix. It is intended to simplify rain testing, since it does not take gravity and worldAxis into account. Enabled by r_tempFixBoundsOfParticleDeformedSurfs cvar. The same idea with interval math can be extended to all cases, but for that to happen it is necessary to compute several different bounds for particle stage, not just one. Most importantly, I mean: bounds with gravity, and bounds without gravity. I hope to do this during particle code refactoring. |
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Done in svn rev 9012, as a part of major particle refactoring (0005138). The previous code was wrong by trying to precompute the bounds of the final particle locations, with all the world-space effects applied (like worldGravity and worldAxis). As the result, such precomputed bounds were not usable with any other entity orientation, not to say they were not applicable to particle deforms. Now only "standard bounds" are precomputed by particle sampling (saved in particle stage), which exclude gravity and worldAxis postprocessing (EstimateBoundsStdSys). They are computed in "particle emission coordinate system", which should be multiplied by origin/axis from idParticleData and by entity axis to transform into world space. From these standard bounds, some provably correct bounds can be computed for entity in any orientation pretty fast (GetStageBoundsModel). Even bounds of particle deform systems is now computed correctly, by combining bounds on emit location/orientation (AnalyzeSurfaceEmitter) and standard bounds (GetStageBoundsDeform). |
- Anonymous
