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Secondary particles are now compatible with the new gravity setup.
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Scale from domain.
Removed time scale from another conversion factor. See also changes from 6400f54b4cc6.
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The old time_total initialization was in trouble if scenes made use of a variable framelength (e.g. by animating the time scale parameter).
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Removed timescale from conversion factor - factors should stay constant even if timescale changes.
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with OpenVDB in 2.83
Config files always use the .uni extenstion.
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Use booleans instead of 0 / 1 in Python
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Moved std namespace to beginning of class.
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Use shorter variable names.
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This function needed a bigger cleanup, especially after the problem from T76276.
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MANTA_main.cpp
The compiler error should be fixed by removing the 'else if' blocks. However, this function should still be refactored in the future.
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Refactored setup that converts from Blender to Mantaflow units.
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Emission values should not accumulate beyond one frame, only during the adaptive steps of one frame.
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Fixes issue with flow and effector objects which were not being used after resuming a bake job.
This issue has been reported in T75729 and T75758.
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More concise return types for cache import functions and general cleanup.
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Saving noise cache files is handled in fluid.c.
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diverged, residual norm > 1e30
Ensures that there are no enclosed holes between an obstacle and the domain walls.
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Fixed an issue that was likely introduced in a past cleanup.
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time-steps
Problem was mentioned in T74062.
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Issue was that the noise simulation was trying to bake with a minimized domain size (adaptive domain initializes domain with size (1,1,1)). Similarly to the base resolution bake, there should be no noise baking happening at those domain sizes - a domain at this size is considered empty.
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Fix for new assertion statements that were introduced in bfdc42d9906a.
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Make sure that noise uses the unaltered velocity grid. This is particularly important once external velocities get added to the velocity grid.
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This refactor cleans up code for the Manta file IO. It also improves the cache 'Replay' option.
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Refactored the caching system so that return values are no longer ignored. The aim of this refactor was to make the caching more robust.
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Improved loading times for mesh files by reading bigger chunks of data from the disk at once.
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Improved loading times for particles files by reading bigger chunks of data from the disk at once.
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Currently results in unstable particle behavior and incorrect meshing.
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Small tweak to ensure index will not run out of bounds during secondary particle computation.
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Planar object now have a thickness by default. This should make it more intuitive for users as there is no need to specify an object thickness.
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Phi that is used for mesh should be the one that matches particles best.
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Bubbles are one frame ahead of Mesh
Fixes an issue with secondary particles being out of sync with the main simulation. Cleaned up the secondary particle code in general too (making sure that all solver attributes - timestep, framelength, etc. - are set correctly).
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Includes only a rename. The name PyInit_Main was a bit confusing as it just belongs to Manta.
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Belongs to T73921. This commit fixes the crashes with light baking (disabled in f3a33a92987f). There is still a memory leak to be fixed though.
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This is more in line with standard grids and means we don't have to make
many special exceptions in the upcoming change for arbitrary number of volume
grids support in Eevee.
The workbench shader was also changed to fix bugs where squared density was
used, and the smoke color would affect the density so that black smoke would
be invisible. This can change the look of smoke in workbench significantly.
When using the color grid when smoke has a constant color, the color grid
will no longer be premultiplied by the density. If the color is constant
we want to be able not to store a grid at all. This breaks one test for
Cycles and Eevee, but the setup in that test using a color without density
does not make sense. It suffers from artifacts since the unpremultiplied
color grid by itself will not have smooth boundaries.
Differential Revision: https://developer.blender.org/D6951
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Now it crashes instead.
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The solver will now automatically detect static scenes (no moving obstacles) and use a slightly faster pressure solve in those cases.
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Changes from that commit turned out to be unstable.
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Reduced extrapolation distances, no need to extrapolate that far.
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For optimization purposes these settings need to be enabled explicitly from now on.
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Somehow this was forgotton in the optimization patch a5c4a44df67e.
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This commit adds bounding box support for emission objects - similarly to flow objects. Before, each effector object had to iterate over the entire domain. Bake times of scenes with multiple obstacles improved significantly with this optimization.
Other improvements that were implemented alongside the bbox feature:
- Option for subframe sampling for effector objects
- Option to enable / disable effectors (can be animated)
- Optimization for static objects. If a flow or effector object does not move and the adaptive domain is not in use, the bake time will be optimized further by reusing the flow / effector grids from the previous frame (no recalculation).
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Just a sanity check.
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Use flags instead of obstacle to avoid confusion with obstacle levelset grid.
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Simple checkbox that - if enabled - will tell the solver to clear density or liquid particles in obstacle cells.
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Too much extrapolation can become expensive. Reducing it here since extrapolating levelsets into a couple of cells should be sufficient.
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Use greater boundary width for smoke simulations
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This will more important when we start using OpenVDB in more modules.
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* Address warning because of undefined OPENVDB usage
* Remove unused WITH_FLUID definitions
Differential Revision: https://developer.blender.org/D6919
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