Tangent to Automatic to Relativ to Absolute

[Martin Starchel]

hallo

Can someone tell me what the difference is between the “Handle” types? I see no difference between the settings. The Bone_def behaviour is (to me) the same. Unfortunately I can not find a proper explanation on the www

1. Also I do not understand the meaning of the deform (ctrl + w). “Enable Bone to deform geometry” and I am able to deform it….. what does this mean….

Thank you very much

[Wayne Dixon]

Hi Martin,
The “automatic” setting will use a connected parent as the handle(s).

Also when you create a bone, it automatically has the “deform” option turned on.  

This is why when you add a vertex group with the same name (and the armature modifier is set to use vertex groups) it will deform the mesh.  If you disable the ‘deform’ option it won’t deform the mesh no matter what you do.

The Ctrl W option is one way you can enable/disable or toggle this option.

The ‘deform’ option is something you more often have to turn off on the bones you don’t want to deform the mesh. Otherwise if you use automatic weights, it’s going to weight the mesh with a whole lot of bones you don’t want to have influence over the mesh.

[Martin Bergwerf]

Hi Martin,

the Manual has (n the case of Bendy Bones) a pretty good explanation:

https://docs.blender.org/manual/en/3.4/animation/armatures/bones/properties/bendy_bones.html?highlight=bendy%20bones

Ask again if that isn’t clear.

As to the other question, I don’t know what you mean exactly…

[Martin Starchel]

So the “deform” has to be deactivated by those bones which should not affect the mesh (here the cylinder). Is this correct…? I tried this and it looks like that this is what you mean… in this case only the Bone_def is allowed to affect the mesh and why the “deform” is on

I did this several times and sometimes I have had all bones in the vertex group. Is this because I did not deactivate de Deform

and the end Handle…. is in this case the top and the bottom would be the start… ? Stupid question but how does Blender know what Start and End Handle is….

thank you Wayne and Martin aka Spikey

[Martin Bergwerf]

Hey Martin, the Start Handle is at the Head of the Bendy Bone and the End is at the Tail. It’s like stroking a cat, for instance; you move from the head of the cat towards the tail…or you get an angry cat and probabaly some scratches.

If a Bone is not set to Deform, it will still affect the Cylinder (for instance), like Move And Rotate it, but it won’t bend it..

[Martin Starchel]

Hi Martin

So the Start Handle is at the Head of the Bendy Bone which means at the top… right? The End is the Tail you say…. so the Bottom. Why do I add the “bone out” (which is on the Top) at the End Handle then? What am I missing…. very sorry for giving you a hard time.

[Martin Bergwerf]

Hi Martin,

Don’t worry, we are happy to answer questions; just ask away!

I am not an animator or rigger and don’t work a lot with Bones, so I usually go into Edit Mode, to see where the Head of a Bone is and where the Tail:

So, exactly opposite of what you said.

[Martin Starchel]

of course… 😫 I had my mind on the mesh … and this would be different for me.Bottom would be where “0” is… thank you

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