Create a linear brush stroke with weight paint? So, I'm trying to edit weight paint data in Blender, and I want to create a gradient to create a smooth bend in the rig I'm going to edit (I'm editing a rig I downloaded so that the legs and arms don't just move at a direct, unrealistic angle), but I don't just want to hold LMB and hope that I move my mouse in a somewhat horizontally straight fashion. How does one draw a stroke that is completely strait and linear by just clicking and dragging? The Blender manual says you can create a linear gradient by holding Alt and dragging with LMB, but my result is pretty useless.
http://pasteall.org/pic/show.php?id=88490
As you can see, what happened in the GIF wasn't very useful.
Does anybody know how to draw a line in weight paint mode?
This isn't an answer to the question you asked, but it may be helpful in solving your situation.  You can use vertex groups, created in edit mode, named the same as your bones in your armature, to create more precise rigging.

http://www.pasteall.org/blend/36178

You can see what I mean in a quick demo I built just now.