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The last path segment can be shortended due to randomized path length.
In that case the last segment's color vector was not defined.
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The fixed-function roughness was not getting used once the curve
roughness has been enabled at least once.
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child hairs.
This allows disabling the curves temporarily without losing the setup.
Conflicts:
source/blender/blenkernel/BKE_blender.h
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mode.
This was caused by variation of the number of keys on child hairs due
to shortening of hair curves based on euclidian distances. The other
kink modes also shorten hairs, but use the parametric distance instead,
which does not vary with deformation of hairs.
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frequency).
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specific.
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This requires interpolating the parent key properties, because no single
parent key can be mapped to each key on the children any more.
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negative radius.
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This test is terribly expensive for some reason and not necessary for
for the spiral mode anyway.
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Conflicts:
source/blender/blenkernel/intern/particle.c
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This is BAD code, but the particle kinking does not make it easy to
write a non-local modifier that requires neighboring positions,
curvature, etc. The feature is needed for Gooseberry.
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This adds another level of clumping on child hairs. When enabled, child
hairs chose a secondary clumping target using a Voronoi pattern. This
adds visual detail on a smaller scale, which is useful particularly when
the number of parents is relatively small.
Natural fibres behave in a similar way when they become sticky and
intertwined. Hairs close to each other form a first twisted strand, then
combine into larger strands. Similar features can be found in ropes:
http://en.wikipedia.org/wiki/Hair_twists
http://en.wikipedia.org/wiki/Rope
Conflicts:
source/blender/blenloader/intern/versioning_270.c
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This is an alternative method to the current fixed function with a
clump factor and "shape" parameter. This function is quite limited and
does not give the desired result in many cases (e.g. long, parallel
rasta strands are problematic). So rather than trying to add more
parameters there is now a fully user-defined optional curve for setting
the tapering shape.
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This contains a few pieces of code for a future "modifier" system that
would allow more flexible combination of effects. Eventually a node
system is the way to go, but the current code makes that impossible.
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