This was a request by Daniel Salazar. It adds a new frame offset variable to fluid sim settings, which can be used to display baked fluid sims at different times. Eventually this could be replaced by real NLA strips for cached data, but until then this is a simple way to have more flexible cache result usage.
Not strictly a BCon3 patch, but after IRC discussion with Genscher, ZanQdo and kaito decided to commit it anyway, since it's a small feature and makes fluid sim a bit more usable. Similar patch for point cache (particles, smoke, cloth) is being worked on as well.
This commit restores support for freezing or speeding up physics sims. Animate
the "Speed" parameter under Domain->Time, which controls a multiplier factor for
the rate at which the sim proceeds (i.e. the old "Fac-Tim" setting).
Notes:
* Subversion bumped to 4 to patch up defaults for new value so that old sim
files will still run correctly
* Names/descriptions could do with some tweaking
* Porting this across was not that obvious since quite a bit of stuff had
changed (as in, been cleaned up). However, from tests so far, it seems to work
well.
- curve map insert point had a nested loop which used the same value to index different arrays.
- dynamic paint used ternary operator where both outcomes were the same.
* Fluid compilation: Inverse the compile flag from DISABLE_ELBEEM to WITH_MOD_FLUID for consistency. (scons/cmake)
* Use WITH_BF_FLUID in your user config (scons)
* Add support for scons to disable build with Decimate and Boolean modifier.
(WITH_BF_DECIMATE and WITH_BF_BOOLEAN)
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)
The main purpose for this is to allow rendering motion blurred blender fluids in external renderers (eg. http://vimeo.com/21870635 ).
Python code snippet for interpreting this data here: http://www.pasteall.org/21577 . Cleaned up some ugly hacks in this area too
* Also added read-only access to scene.subframe to RNA - setting current frame and subframe should still go via scene.frame_set()
most local modifier,GPU,ImBuf and Interface functions are now static.
also fixed an error were the fluid modifier definition and the header didnt have the same number of args.
* In some rare cases gzread has problems with the fluid files. This could be minor file corruption or some strange thread issue, but checking the amount of read bytes always after read seems to give a graceful way out.
* Fluid baking (using the job system) didn't update the "lastgoodframe" anymore, so reversing the frames didn't work. Now the last valid frame is checked by going through all fluid bake files when "reverse frames" is selected.
* There was all kinds of fancy checks done in the fluid modifier for reading a different frame in different cases, but as the "lastgoodframe" was really not working I don't see the point of this whole code, so removed it for now. The new functionality is: if the fluid data for current frame exists use it, otherwise just return unmodified domain mesh without any fancy backup plans.
* There were also some errors on reading uncompleted files (scrubbing timeline while bake was running), so I made the fluid file reader just return null if the number of faces didn't correspond to to actually read data. Previously this just printed an error to the console.
Both stored the filename of the blend file, but G.sce stored the last opened file.
This will make blender act differently in some cases since a relative path to the last opened file will no longer resolve (which is correct IMHO since that file isnt open and the path might not even be valid anymore).
Tested linking with durian files and rendering to relative paths when no files is loaded however we may need to have some operators give an error if they are used on the default startup.blend.
- removed deprecated bitmap arg from IMB_allocImBuf (plugins will need updating).
- mostly tagged UNUSED() since some of these functions look like they may need to have the arguments used later.
In file included from MOD_fluidsim_util.c:62:
/usr/include/zlib.h:1440: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘gzseek64’
TODO: string.h appears twice and "" vs <> seems arbitrary.
