Feather template on Hairgen
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- markusAkino
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Hi there,
I have been following this feather tutorial series:
https://www.youtube.com/watch?v=pOjHpX0NOi4&t=65s [www.youtube.com]
I'm at the point where I have one feather distributed on a hairgen but the feathers are spawning from halfway along the feather, inverted in shape and also stretched in shape.
Did I miss something obvious?
Houdini 20.0.648
I have been following this feather tutorial series:
https://www.youtube.com/watch?v=pOjHpX0NOi4&t=65s [www.youtube.com]
I'm at the point where I have one feather distributed on a hairgen but the feathers are spawning from halfway along the feather, inverted in shape and also stretched in shape.
Did I miss something obvious?
Houdini 20.0.648
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- markusAkino
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To follow up, here is a default feather template attached to a hairgen on a grid - the shape of the barbs is errored (bottom image) in the default orientation.
They look as expected if using a guide process direction to lay them flat to the grid
Also interesting note.. in the tutorial series linked above, he seems to have an unnoticed issue where the feathers have a different shape when being created on the guide groom
They look as expected if using a guide process direction to lay them flat to the grid
Also interesting note.. in the tutorial series linked above, he seems to have an unnoticed issue where the feathers have a different shape when being created on the guide groom
Edited by markusAkino - Oct. 1, 2024 17:10:16
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- ObeidaZakzak
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Hello,
This behaviour is due to an incorrect configuration of
The
Feather tools in Houdini treat
You can use the


This behaviour is due to an incorrect configuration of
barborient
attribute.The
Orientation Along Curve SOP
is not appropriate for setting up barborient
, as it builds orient quaternion using a Z-axis going in the curve direction.Feather tools in Houdini treat
barborient
like if it's built in the opposite direction of Z-axis (negative Z direction).You can use the
Guide Tangent Space SOP
as it's more appropriate for Groom/Feather tools. For example, using the "Skin Tangent Attribute" mode over skin's N
(normal) attribute gives an orientation that feels more "natural".Edited by ObeidaZakzak - Oct. 2, 2024 13:25:09
Houdini Pipeline Supervisor @ TAT Studio
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- markusAkino
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