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workaround for view3d datamask not being correct on opengl render.
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algorithm remains
the same, but big changes have happened both on the outside and on the inside.
New UI:
* The old parameters were quite true to the underlying algorithm, but were quite obscure
from a users point of view. Now there are only a few intuitive basic parameters that
define the basic fluid behavior.
** By default particle size is now used to determine the interaction radius, rest
density and spring rest lengths so that it's easy to get stable simulations by simply
emitting particles for a few frames and adjusting the particle size (easy when the
particle size is drawn) so that the fluid appears continuous (particles are touching
eachother).
** Stiffness - in reality most fluids are very incompressible, but this is a very hard
problem to solve with particle based fluid simulation so some compromises have to be
made. So the bigger the stiffness parameter is the less the fluid will compress under
stress, but the more substeps are needed for stable simulation.
** Viscosity - how much internal friction there is in the fluid. Large viscosities also
smooth out instabilities, so less viscous fluids again need more substeps to remain
stable.
** Buoancy - with high buoancy low pressure areas inside the fluid start to rise against
gravity, and high pressure areas start to come down.
* In addition to these basic parameters there are separate advanced parameters that can
either be tweaked relative to the basic parameters (or particle size) or defined
independently.
** Repulsion - the stiffness parameter tries to keep the fluid density constant, but this
can lead to small clumps of particles, so the repulsion keeps the particles better
separated.
** Stiff viscosity - the normal viscosity only applies when particles are moving closer to
eachother to allow free flowing fluids. Stiff viscosity also applies smoothing to
particles that are moving away from eachother.
** Interaction radius - by default this is 4 * particle size.
** Rest density - by default this is a density that the particles have when they're packed
densely next to eachother.
** Spring rest length - by default this is 2 * particle size.
* There are also new options for 3d view particle coloring in the display panel to show
particle velocity and acceleration. These make it easier to see what's happening in the
fluid simulations, but can of course be used with other particles as well.
* Viscoelastic springs have some new options too. The plasticity can now be set to much
higher values for instant deletion of springs as the elastic limit is exeeded. In addition
to that there is an option to only create springs for a certain number of frames when a
particle is born. These options give new possibilities for breaking viscoelastic fluids.
New in the code:
* Most of the fluids code is now thread safe, so when particle dynamics go threaded there
will be a nice speed boost to fluids as well.
* Fluids now use a bvh-tree instead of a kd-tree for the neighbor lookups. The bvh-tree
implementation makes the code quite a bit cleaner and should also give a slight speed
boost to the simulation too.
* Previously only force fields were calculated with the different integration methods, but
now the fluid calculations are also done using the selected integration method, so there
are again more choices in effecting simulation accuracy and stability. This change also
included a nice cleanup of the whole particle integration code.
As the internals are pretty stirred up old particle fluid simulations will probably not
work correctly straight away, but with some tweaking the same level of control is still
available by not using the "relative versions" of the advanced parameters (by default these
are not used when loading old files).
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ASCII lookup table wasn't being freed when when the rest of the glyphs were.
Also found own bug where mesh stat text was using wrong sized array (char[3] as char[4]).
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Very bad crashing in using "Not AA fonts" and drawing length info
on EditMesh. This uses the call BLF_draw_ascii() which apparently
corruptes then badly. Disabled the call for now, and wait for fix.
In the course of testing, added proper strlen storage for draw
in this code.
Added strlen
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Submitted by Alexander Kuznetsov
Fixes [#25279] Shift-Numpad Combinations fail to align view to selected
and addresses [#26328] Blender uses global keyboard message hook which hurts system responsiveness on Windows
A whole new way of handling keyboard input improves greatly both code readability and event handling. Thanks for the great patch, Alexander!
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The bug is caused by a fix for [#22111], commits r29356, r28545.
exiting localview would set the rv3d->view but use the original rv3d->viewquat.
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Arrows-move-cursor is back!
It now works for any running modal operator that doesn't handle own
arrow keys. Might need to become more restricted though, some modal
ops don't need it. Want to investigate that still where conflicts are.
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we cant ensure that a requested buffer can be allocated so report opengl errors when failing to allocate the buffer (rather then printing to console).
this is common enough and generic error isn't too helpful to users.
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vector is needed!
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* Change ICON_NULL --> ICON_NONE to avoid two #defines with the same meaning.
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doesn't update vertice number ( in info header )
missing notifier.
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The butterfly wing flap, causing a nice storm in the rest of blender.
Now all dependencies should point ok again. CMakers, do double-test.
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Option "Align view to selected" only aligned to the last activated
item in editmode. This whilst code comment even said "use alignment
from Manipulator in normal mode".
Now it does what it's (apparently) meant to do, and what brazilians
think it should! ;) It aligns to selected!
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headers.
left in warnings where functions obviously need to get ported to 2.5x still.
Also, render stamp seq strip works again.
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Switching layers reveiled hidden objects in wrong positions, changes
are currently not being handled for hidden objects.
Only way to fix it is by completely update newly visible objects...
(Also fixed a typo and a compile warning)
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header static for blenlib, blenkernel and editors.
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- rename rna collection structs Main prefix to BlendData: eg, MainObjects --> BlendDataObjects
- printing python collection now prints its type (when available)
- renamed shadowed vars in bpy_rna.c.
- when making functions static I also made debugging/test functions static, reverse and add definitions to headers instead.
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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.
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python functions.
- use NULL rather then 0 where possible (makes code & function calls more readable IMHO).
- set static variables and functions (exposed some unused vars/funcs).
- use func(void) rather then func() for definitions.
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- modifier code was using sizeof() without knowing the sizeof the array when clearing the modifier type array.
- use BLI_snprintf rather then sprintf where the size of the string is known.
- particle drawing code kept a reference to stack float values (not a problem at the moment but would crash if accessed later).
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- reading pointcache was using an incorrect, always NULL variable.
- commented NDof code, was giving warnings and isnt used now.
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3D View:
In quad-view mode, the options to set back/bottom/left views were
blocked. Now they work again.
Note: the oparator polls don't have a check for properties... so it
cannot be finegrained here. Checks are inside code.
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to curves.
added new functions
- view_autodist_depth_segment()
- plot_line_v2v2i(), which takes a callback and plots x/y points.
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Report was that move-to-layer menu failed. The real cause was
more complex; had to dive deep in the dungeons of the interface
code that handled undos and operators. Found several issues:
- popup menus (like redo operator, color picker) executed again
on a mouse-exit
- far too many buttons were sending undo pushes; even worse, in
the operator redo-panel each button action was pushed twice
- in case operator redo-buttons have own callbacks (like layer
buttons) the redo wasn't working
- layerbutton menu was called without creating a proper undo/redo
case
Things should all work smoother now!
On todo:
- better definition and handling of all versions for operator menus
(four types now, not fun)
also: make operator "do" menu, which on first action does operator
and then switches to redo-ing
- bring back Undo menu, to list the undo stack and jump in it.
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caused by commit for fix [#25691] 16 hours ago.
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Sketching Sessions.
Fix for secondary issue noted in this bug report. Some of the code for
the fancy 3d view sketching options needed to be moved around so that
there is a clearer "paint/sketch session" and "stroke" separation
between various stages. There's still some more stuff that needs to be
done here before I think it's totally cleaned up.
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poll function was incorrect.
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* Particle draw data wasn't freed properly in some cases.
* Velocity + circle draw type also crashed due to missing null pointer check.
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also removed unnecessary NULL checks (where the pointer was used later without checking).
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The tool-redo depends on a working undo system, so it can rewind
a step and then redo operator with new settings. When a user
disables undo, this won't work.
Now the properties for redo operator (toolbar, F6) will grey out
when a redo isn't possible.
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also minor functional changes
- OBJECT_OT_make_links_data() type property is now assigned to the operator property (so popup menu can find it)
- removing BG image now returns cancelled if no image is removed.
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also make rna function for new images require width and hight args.
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'cd' could be NULL, all other particle draw types checked 'cd' except for PART_DRAW_AXIS, seems logical to have the check here too.
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have makesrna.c omit unused _data definitions for rna funcs with no args.
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- move GS() define into DNA_ID.h
- add BLI_utildefines as an automatic include with makesrna generated files.
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MAKE_ID, FILE_MAXDIR, moved the generic defines to BLI_utildefines.h.
no functional changes.
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