Arc Ik Solver

[Hamedss]

Hi everyone.
I wondered how Are Ik Solver work!
I created one bone chain consist of 5 bone with one target and set the chain to arc Solver. But instead of an arc shape I got a ? Shape on these bones!
Is these feature going to work like this?

[dueyftw]

https://filebin.net/7msoitvncwh0r5z8

1) The shape has lots of points for each side. And try to add the same amount to each side.

2) Use a series of pin bones that are parented in a string. In the file use 'Hide/show shy Bones to see all bones.

3) All but the end bone B2 has bone strength. B2 has no bone strength.

4) B2 is the end bone. All but B1 has B2 angle Constraints. I used .1 that are controlled by B2.

5) Turn B2 by holding 'Alt' and moving the mouse sideways.

6) Add a Bone with actions to do #5

Some thoughts, use grid to evenly space each pin bone. Use different bone strength on the shy bones for effects on the curve.

Any questions?


Dale

[Hamedss]

Oh. Really Thanks
you remember my rigging works in 3ds max
but let me say that bone chain is a long leg of a character that needs to bend correctly in arc shape. I tried any techniques before but I think Smith Micro need to solve some issue in next version

[Maestral]

Perhaps you could simplify the rig, like in this thread

[Hamedss]

Perhaps you could simplify the rig, like in this thread

Yeah. that's it.
thank you
but Why he use internal line to connect points ?

[synthsin75]

but Why he use internal line to connect points ?

Probably so the shape could overlap itself without creating gaps. If so, there are actually four shapes there.

[shubi]

Hi,
I am facing the exact issue explained here... ie. the arc ik solver works only upto the last bone that is targeted. The bone connected to target bone always breaks the curve as it always points to the target bone. Is there a solution for this yet?

Reference :

[synthsin75]

For smoothly bending limbs, you might actually need fewer bones.

See Victor's video here: https://www.lostmarble.com/forum/viewtopic.php?t=20410

[Greenlaw]

Personally, when I need that style of deformation/animation, the Sketch Bones tools works much better than IK.