Hi,
is there a way to calculate easein and easeout to match a bezier curve or is this not possible ?.
This is what is used based on the following blogpost.
ease_in = hlength1/(length*0.350464)
ease_out = hlength2/(length*0.350464)
A small script to test if the bezier and bendy bone match but unfortunatly not successful.
import bpy
# try to match bezier curve
armature = bpy.data.objects['Armature']
bendy_bone = armature.pose.bones['bendy_bone']
start_handle = armature.pose.bones['h1']
end_handle = armature.pose.bones['h2']
# get custom bendy_bone handle
v1 = start_handle.head
v2 = start_handle.tail
v3 = end_handle.head
v4 = end_handle.tail
hlength1 = start_handle.length
hlength2 = end_handle.length
length = bendy_bone.length # or (v2-v3).length ?
# https://aligorith.blogspot.com/2016/05/an-in-depth-look-at-how-b-bones-work.html
# hlength1 = ease_in * length * 0.350464f
# hlength2 = ease_out * length * 0.350464f
# tried to calculate easein and -out
ease_in = hlength1/(length*0.350464)
ease_out = hlength2/(length*0.350464)
bendy_bone.bbone_easein = ease_in
bendy_bone.bbone_easeout = ease_out
# match bezier handle to bendy_bone handle
bezier = bpy.data.objects['BezierCurve'].data.splines[0]
bezier.bezier_points[0].co = v1
bezier.bezier_points[1].co = v4
bezier.bezier_points[0].handle_right = v2
bezier.bezier_points[1].handle_left = v3
Here is a simple setup to test the script.
Just scale the handle bones in y direction or rotate them around the start and endpoint of the bendy bone and run the script.
https://mega.nz/file/ZnYQkLxY#mqXsowwgEarovGT_vVg_VzT8T8FsqeLvw3xYuVSEA40
I hope someone can point me in the right direction to achieve what i am looking for.