Hair Kink Options not Following Object Rotation #43753
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Reference: blender/blender#43753
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System Information
Windows 7 64-bit Intel(R) Core(TM) i7-2600 CPU @ 2.40GHz
Blender Version
Broken: 2.73
b4d8fb5Worked:
Short description of error
After enabling a "kink" option for either type of child hair particles, the child particles randomly rotate around their parent particles when the object is rotated.
Exact steps for others to reproduce the error
Blend file:
Hair_Kink_Rotation_Issue.blend
Changed status to: 'Open'
Added subscriber: @NathanielJohnson
Added subscriber: @zeauro
No problem with provided .blend under ubuntu 14.04 Blender
913e109Added subscribers: @LukasTonne, @JulianEisel
Hmm, I confirm some weird looking rotation. @LukasTonne, am I allowed to assign some hair bugs to you at least? ;)
Confirmed, this happens for the
CurlandWavemodes. Probably similar to roughness issues we had in the gooseberry branch: Kink/roughness/blah features must only depend on ORCO coordinates of the child/parent, otherwise any deformation or transform of the object leads to a change in hair shape.The code is quite horrible atm and totally not formalized. Any future system for generating hair must make sure the input coordinates are local and consistent for each hair, especially if we start using nodes and allow users to build their own shape constructors.
Changed status from 'Open' to: 'Archived'
Particles are broken, needs rewrite.
Added subscriber: @Christoph-Feck
This issue is reproducible with 2.83 and 2.90 in Curl and Wave kink types, but works correctly with Braid kink type. Maybe this helps someone trying a fix until the rewrite is merged.
Added subscriber: @Cigitia