How does weight paint work?

[Sir donks alot (rip my grandpa)]

How do you use it exactly? I watch tutorials but they dont explain it properly. I found a good one that I kinda figured out just by watching him do it. But what I dont get is do you just make it red? The entire area where the bone is and that's it? Not a specific part just the entire section where the bone is?

[Sir donks alot (rip my grandpa)]

引用自 still__alive：

引用自 Obvious Jojo reference：

https://imgur.com/KVk1nc3

https://imgur.com/MuPp0Ly

this is what im dealing with

What we are saying is still applicable to your situation. What should be added is that when you switch bones, the weight painting will change on you. For obvious reasons, if you are following what the weight painting is doing.

Now, I have done almost 0 weight painting myself. I do understand how it works, but I don't have actual experience weighting stuff and then animating it myself. So I can't advise on what the weights should be to make that tail animate nicely.

But you are essentially going to select a bone and paint the weights for that bone on the vertices that it is close to. There should probably be a band with a gradient, with red, or warmer colors anyway, in the center, transitioning to cooler colors on either end of this band. You probably want bones to be sharing a bit of influence over some of the same vertices.

Ok sounds simple enough, im getting a better idea of it. I just hope I dont have to keep exporting it, testing it in sfm only to find out it doesn't work and have to go all the way back to blender. decompile and reopen it, make adjustments only to export and rinse and repeat.

The tail on my model worries me the most. I also want to get rid of the armatures arm helpers. I just want a normal armature that has each bone in assigned sections to work independently without help

[Sir donks alot (rip my grandpa)]

Took a break and im gonna recap

So you just select a bone, paint its section red and presto?

[Sir donks alot (rip my grandpa)]

Im gonna bump this cause I still got no idea. I tried painting a models bone that had a terrible weight paint and it didnt fix it at all and I think it may have made it worse.

I just dont get it! How the ♥♥♥♥ do you weight paint?? It makes zero sense to me!

[Mio Rin]

Start here: https://www.youtube.com/watch?v=-gIL6VZ-bkE&list=PLa1F2ddGya_-UvuAqHAksYnB0qL9yWDO6&index=28
It shows you the basics, including weight painting.

[still__alive]

引用自 still__alive：

You haven't gotten a handle on the very basics somehow. When you paint in red, you are telling Blender that this bone has 100% influence over these verts. Turn your brush down to 0%, and you'll be painting in blue, or effectively erasing any weighting you've painted.

Try watching these and see if they explain something better than the tutorial you've linked:
https://www.youtube.com/watch?v=Tl4qTgwQwYw
https://www.youtube.com/watch?v=jdGUedrxm-0
https://www.youtube.com/watch?v=nK2F-l8Wjbg

[Sir donks alot (rip my grandpa)]

引用自 still__alive：

引用自 still__alive：

You haven't gotten a handle on the very basics somehow. When you paint in red, you are telling Blender that this bone has 100% influence over these verts. Turn your brush down to 0%, and you'll be painting in blue, or effectively erasing any weighting you've painted.

Try watching these and see if they explain something better than the tutorial you've linked:
https://www.youtube.com/watch?v=Tl4qTgwQwYw
https://www.youtube.com/watch?v=jdGUedrxm-0
https://www.youtube.com/watch?v=nK2F-l8Wjbg

Helped me out quite a bit but im having some difficulties. Like alot of difficulties. The tails weight paint is for some reason far behind it on another bone. Dont know where to paint for the shoulders. For some reason an arm bone moves the symbol on the shirt. No idea how to weight paint the meshes on the face. Both forehead meshes and the eyebrows. I got so many issues and I wish I had someone in chat to help walk me through this

edit: im just discovering more problems as I go along. For some reason the left sleeve moves with the right shoulder. I made all of it blue, erased. But for some reason parts of it STILL move!!! Not only that it seems to be in the same line as the line in the texture on the shoulder! I DON'T GET WHAT'S GOING ON!!!!

[Stretchyf]

Obvious Jojo reference, you can always go to Edit Mode and select the vertex that is not moving correctly and see the weights of all bones for that vertex - all the deforming vertex groups that vertex in and with what weights exactly. It is like Debug mode.

And, if you don't know it already, Blender ALWAYS normalizes weights of a vertex for calculating deformations. All weights that vertex has between deforming bones of a single armature. So if you have only one bone (vertex group) affecting that vertex, then it is no matter what weight vertex has if it is not zero - it will follow the bone completely like it is pure red in weight paint. To not follow the bone completely, vertex should be in more that one vertex group, associated with bones, and both weights should be above zero.

[Sir donks alot (rip my grandpa)]

引用自 stretchyf：

Obvious Jojo reference, you can always go to Edit Mode and select the vertex that is not moving correctly and see the weights of all bones for that vertex - all the deforming vertex groups that vertex in and with what weights exactly. It is like Debug mode.

And, if you don't know it already, Blender ALWAYS normalizes weights of a vertex for calculating deformations. All weights that vertex has between deforming bones of a single armature. So if you have only one bone (vertex group) affecting that vertex, then it is no matter what weight vertex has if it is not zero - it will follow the bone completely like it is pure red in weight paint. To not follow the bone completely, vertex should be in more that one vertex group, associated with bones, and both weights should be above zero.

https://imgur.com/6ihcXbz

[Sir donks alot (rip my grandpa)]

I was wondering. Are there different type of brushes? The models default paint looks like this

https://imgur.com/RdeeMcu

this is my brush

https://imgur.com/xCEE0gz

Notice how it makes lighter paint around it. Nothing like the smoothed out paint on the default. I was wondering how I can do that. The tutorial videos didnt cover this

[The Renderer]

Yes, there are different brushes as well as many brush settings. I can't believe none of those videos covered it but maybe it is time you actually read the manual, it has all those infos in there:

https://docs.blender.org/manual/en/latest/sculpt_paint/weight_paint/index.html

Including a very detailed section on brushes:

https://docs.blender.org/manual/en/latest/sculpt_paint/weight_paint/tool_settings/brush_settings.html

[Sir donks alot (rip my grandpa)]

引用自 The Renderer：

Yes, there are different brushes as well as many brush settings. I can't believe none of those videos covered it but maybe it is time you actually read the manual, it has all those infos in there:

https://docs.blender.org/manual/en/latest/sculpt_paint/weight_paint/index.html

Including a very detailed section on brushes:

https://docs.blender.org/manual/en/latest/sculpt_paint/weight_paint/tool_settings/brush_settings.html

That may be exactly what I needed, thanks!

But yeah they pretty much just covered the basics. How to use it and what it effects. Just how it works but nothing about brushes or any other settings for it