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Add optional string argument to Object.newParticleSystem() method, so that
objects can link to existing particle systems (if the name of the particle
system is known). Also cleans up some code in Object.c which accesses the
particle sys listbase.
Left Click and drag for continuous strokes, left click for exact points, Right click to end strokes.
The view can be manipulated while drawing a stroke (between exact point).
Sketching is turned on all the time, this is mainly useful for testing, do not use seriously, nothing is saved, it gives memory errors on exit, yada yada
due to jittering of the start position for antialiasing in a pixel.
Now it distributes the start position over the fixed osa sample
positions, instead of of random positions in space. The ugly bit is
that a custom ordering was defined for osa 8/11/16 to ensure that the
first 4 are distributed relatively fair for adaptive sampling to decide
if more samples need to be taken.
* use SDL events to trigger the sensor, trigger was being forced every tick. removed workaround for this problem.
* added "All Events" option, similar to all keys in the keyboard sensor.
This means every event from the joystick will trigger the sensor, however only events from the selected type (axis/button/hat) is used to set the positive state of the sensor.
* Added python function sens_joy.GetButtonValues(), returns a list of pressed button indicies.
* Removed pressed/released option for joystick buttons, it was the same as the invert option.
This addition allows you to perturb the point density with noise, to give
the impression of more resolution. It's a quick way to add detail, without
having to use large, complex, and slower to render particle systems.
Rather than just overlaying noise, like you might do by adding a secondary
clouds texture, it uses noise to perturb the actual coordinate looked up
in the density evaluation. This gives a much better looking result, as it
actually alters the original density.
Comparison of the particle cloud render without, and with added turbulence
(the render with turbulence only renders slightly more slowly):
http://mke3.net/blender/devel/rendering/volumetrics/pd_turbulence.jpg
Using the same constant noise function/spatial coordinates will give a
static appearance. This is fine (and quicker) if the particles aren't
moving, but on animated particle systems, it looks bad, as if the
particles are moving through a static noise field. To overcome this, there
are additional options for particle systems, to influence the turbulence
with the particles' average velocity, or average angular velocity. This
information is only available for particle systems at the present.
Here you can see the (dramatic) difference between no turbulence, static
turbulence, and turbulence influenced by particle velocity:
http://mke3.net/blender/devel/rendering/volumetrics/turbu_compare.mov
any path starting with a '.' on win32 would be replaced with C:\ (or the default root)
this was added rev 6568 so the file selector would replace "." with C:\. should be moved to fileselector but for now compare with "." rather then checking the first char.
header_view3d.c - prop edit and render were aligning in curve edit mode.
- the number of segments was always 1 too many on cyclic curves.
- [#17739] - normals were not being calculated when rendering curves.
Replaced macro DL_SURFINDEX with a function. it that assumes variable names and could break from the loop that called it.
Added optional OGG / theora / vorbis support.
(OGG-format encoding is currently disabled, since the bundled ffmpeg version
is broken here)
Fixed a bug with PTS-encoding, to make theora work.
You have to explicitly enable it and currently only scons is supported.
Otherwise: enjoy! :)
Using shapekeys, you get corruptions in other shapes when you undo into
a previous editmode session. The "key index" values become invalid.
Now, if you have shape keys, entering editmode will clear the previously
stored undos.
* Separated duplicate methods out into several functions
* Added copy/paste for gp-frames in Action Editor. Only strokes that are appropriate for the spacetype that the destination layer belongs to will be added to avoid wasted memory usage. Otherwise, was impossible to move sketches between views/layers (which was intended for PyAPI access that didn't get done).
Note: there will currently still be an extra gp-frame created, even if the current no strokes got pasted. There's commented out code which would delete it, but somehow that causes errors, so better to be safe for now.
Reordering Grease-Pencil frames in the Action Editor after transforms was not working at all. Seems I forgot to fix this part after changing what the 'Grease Pencil' editing mode in Action Editor showed.
Curve deform did not work yet on Text and Curve objects, this because it
was not providing the entire array of vertices, for a proper detection of
min/max bounds of the full input.
Otherwise known as a phase function, this determines in which directions
the light is scattered in the volume. Until now it's been isotropic
scattering, meaning that the light gets scattered equally in all
directions. This adds some new types for anisotropic scattering, to
scatter light more forwards or backwards towards the viewing direction,
which can be more similar to how light is scattered by particles in nature.
Here's a diagram of how light is scattered isotropically and anisotropically:
http://mke3.net/blender/devel/rendering/volumetrics/phase_diagram.png
The new additions are:
- Rayleigh
describes scattering by very small particles in the atmosphere.
- Mie Hazy / Mie Murky
more generalised, describes scattering from large particle sizes.
- Henyey-Greenstein
a very flexible formula, that can be used to simulate a wide range of
scattering. It uses an additional 'Asymmetry' slider, ranging from -1.0
(backward scattering) to 1.0 (forward scattering) to control the
direction of scattering.
- Schlick
an approximation of Henyey-Greenstein, working similarly but faster.
And a description of how they look visually (just an omnidirectional lamp
inside a volume box)
http://mke3.net/blender/devel/rendering/volumetrics/phasefunctions.jpg
* Sun/sky integration
Volumes now correctly render in front of the new physical sky. Atmosphere
still doesn't work correctly with volumes, due to something that i hope
can be fixed in the atmosphere rendering, but the sky looks quite good.
http://mke3.net/blender/devel/rendering/volumetrics/sky_clouds.png
This also works very nicely with the anisotropic scattering, giving
clouds their signature bright halos when the sun is behind them:
http://mke3.net/blender/devel/rendering/volumetrics/phase_cloud.mov
in comparison here's a render with isotropic scattering:
http://mke3.net/blender/devel/rendering/volumetrics/phase_cloud_isotropic.png
* Added back the max volume depth tracing limit, as a hard coded value -
fixes crashes with weird geometry, like the overlapping faces around
suzanne's eyes. As a general note, it's always best to use volume
materials on airtight geometry, without intersecting or overlapping faces.
