Commit Graph

15 Commits

Author SHA1 Message Date
Daniel Genrich
5745f99dee Elbeem / Fluidsim update:
a) Enable the possibility to remove the "air bubble" around submerged collision object. This feature is enabled as standard for new files. The code was found in elbeem by nudelZ, coded and provided by Nils Thürey (thanks!)
b) Old baked files gets deleted if a new bake gets started (were overwritten before and resulted in weird old bake + new bake mixture) (idea by nudelZ)
2011-06-12 23:51:30 +00:00
Nathan Letwory
d14216ed04 doxygen: intern/elbeem tagged 2011-02-25 10:51:01 +00:00
Daniel Genrich
d7fecc9e96 Fluid control: WIP commit before weekend, not working is crashing on the first 3 frames 2008-07-25 18:57:16 +00:00
Daniel Genrich
3bab1eba3a Introduced quality to GUI, not yet tested (WIP commit) 2008-07-08 17:38:33 +00:00
Daniel Genrich
e409c2463d WIP commit to introduce channels 2008-07-07 14:36:33 +00:00
Daniel Genrich
d3745d70a5 Another addition of time values, yet some things to follow 2008-07-07 09:23:12 +00:00
Daniel Genrich
7bbf88d602 Added 4 gui elements to structs, another 2-3 will follow; Unsolved problems: simulation and control time desync 2008-07-06 21:55:03 +00:00
Daniel Genrich
b3303c98b1 Another fluid type 'control' added and introduced to elbeem, still some issues to solve but with 1 change in fluidsim.c it kind of works already (hint for me - disabled for other people so they don't complain) 2008-07-06 18:19:42 +00:00
Daniel Genrich
baa1001b47 Initial GUI implementation, yet not functional 2008-07-04 15:23:21 +00:00
Nils Thuerey
818bfcca63 - Added OpenMP code, it is enabled by defining PARALLEL=1 for the elbeem
compilation.  Currently, it is not yet active by default, but 
  Genscher wanted to do some tests. 
  It can be used to distribute the computation load onto multiple shared-
  memory CPUs by splitting the domain along the y-axis (assuming a 
  gravity force along z). However, there is no load balancing: so
  if there's fluid only in one of the y-axis halves you will not get 
  a speedup for 2 CPUs.  

- Added a fix for the memory allocation bugs #7120 and #6775. In 
  solver_init.cpp there are now several variables max___MemChunk 
  (line 692+), that set upper limits for various systems. The same
  problem existed for mac & linux, but the limit is higher, so 
  it probably went by undetected. The windows limit is currently 1GB,
  if the strange 700MB limit problems mentioned in the bug regports the 
  bugs persist, this could be further reduced. For 64bit compilations 
  this problem shouldn't exist anyway.
  What's still missing is a display of how much the resolution was 
  reduced to fit into memory...

- And some minor solver code cleanup.
2007-11-21 22:12:16 +00:00
Nils Thuerey
3bea663ffa - bugfixes
#4742 exported normals are now correct
  #4821 & 4956 for complex movements in/outflows can now also
  use the animated mesh option
- new features
  * isosurface subdivision: directly
    creates a finer surface mesh from the simulation data.
    this increases simulation time and harddisk usage, though, so
    be careful - usually values of 2-4 should be enough.
  * fluidsim particles: extended model for particle
    simulation and generation. When isosurface subdivision is enabled,
    the particles are now included in the surface generation,
    giving a better impression of a single connected surface.
    Note - the particles are only included in the final surface
    mesh, so the preview surface shows none of the particle
    effects.
  * particle loading: different types of particles can now be selected for
    display: drops, floats and tracers. This is a bit obsolete
    due to the extensions mentioned above, but might still be useful.
    Floats are just particles floating on the fluid surface, could
    be used for e.g. foam.
  * moving objects impact factor: this is another tweaking option,
    as the handling of moving objects is still not conserving
    mass. setting this to zero simply deletes the fluid, 1 is
    the default, while larger values cause a stronger
    impact. For tweaking the simulation: if fluid disappears, try
    increasing this value, and if too much is appearing reduce it.
    You can even use negative values for some strange results :)
- more code cleanup, e.g. removed config file writing in fluidsim.c,
  added additional safety checks for particles & fluidsim domains (these
  currently dont work together). I also removed the "build particles"
  debug message in effects.c (seemed to be unnecessary?).

Some more info on the new features:
Here are two test animations showing the difference between
using the particle generation with isosurface subdivision.
This is how it would look with the old solver version:
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_fl6manc4_1noparts.mpg
and this with the new one:
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_fl6manc4_2wparts.mpg
Both simulations use a resolution of 64, however, the version with particles
takes significantly longer (almost twice as long).
The .blend file for a similar setup can be found here:
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_testmanc4.blend
(Minor Tips for this file: dont enable subdivions of characters until rendering,
thus leave off for simulation, as it uses the rendering settings! For making
nice pictures switch on subdivion, and OSA.)

And here's a picture of old vs. new (for webpage or so):
http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid6_manc4compare.png
2006-11-05 16:30:29 +00:00
Nils Thuerey
f21f3cb290 - modified patch #4681, for scons compiling
of the fluidsim can now be disabled with the
	flag: BF_NO_ELBEEM='true', e.g. for irix systems.
	(The number of ifdefs from the original
	patch was reduced, and the defines are now
	only necessary when elbeem is switched off.)
- particle generation option is available again
2006-08-22 11:18:00 +00:00
Nils Thuerey
6d935aee42 - New options for mesh voxelization: shell only (also
works for non closed objects), volume ("normal"/old way of
  doing it), and a combination of both:
  http://www10.informatik.uni-erlangen.de/~sinithue/blender/voltcomp_sm.jpg
- Finally included bjornmose MSVC6 fixes
- Added support for animated meshes, e.g. meshes with
  parented skeletons. Is enabled for obstacles with a new button.
  A simple example with Bassam's mancandy can be found here:
  http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid2_mancandy.mpg
  http://www10.informatik.uni-erlangen.de/~sinithue/blender/fluid2_mancandy.blend
  (Warning - keep meshes as simple as possible, e.g. turn off subsurf
  for baking. Export probably shoulb be further optimized.)
- Changed handling of no/free/part slip obstacles, see:
  http://www10.informatik.uni-erlangen.de/~sinithue/blender/bndtcomp_sm.jpg
- Removed surface particle option for upcoming release,
  needs more testing & tweaking
- Added tracer particles instead (swimming along in the fluid)
- Updated wiki (description of IPOs still missing).
2006-05-11 08:09:02 +00:00
Nils Thuerey
0a63b3c0ca Several minor fixes:
- Added part of Austin's msvc8 fixes (vector::erase function
  was "misused"), hopefully compiles better now.
- Ctrl-b now also bakes a selected fluidsim domain
  similar to the softbodies.
- Added surface smoothing option for domains: default is
  1, higher values result in a smoother surface (and probably
  slightly higher comupation times), while 0 means the surface
  is not modified at all.
- Added BLENDER_ELBEEMBOBJABORT environment variable in readBobj,
  if >0 quits blender when a not yet existing fluidsim
  frame should be loaded. Useful for rendering simulations
  as far as possible from the command line.
- Surface normals pointer is now set to NULL in readfile.c
- Fixed win32 error string handling, now uses a function
  to return the string from the solver.
- Fixed fluidsim particle halo scaling problem.
- Solver update
2006-03-29 07:35:54 +00:00
Nils Thuerey
e48af6f10b - elbeem.h header file was missing 2006-02-27 11:56:04 +00:00