Beginning by adjusting the weights to create a smoother falloff on the spine when bending it. This was done by locking everything besides the chest, pelvis, and upper, lower, and middle spine joints, and using the 'Smooth' function a few times on each. Three rows of edges on the bottom of the torso model were also checked to make sure that they were 100% weighted to the top of the pelvis.
Setting up the animation to prepare to add the pose deformers.
Opening the pose editor.
Editing the first pose, which is having the arm raised.
Editing the second pose, which is the arm lowered.
Before editing the third pose, I ran into an error in which the values of the downwards arm pose was not resetting to a value of 0 when adding in the third pose of having the arm move backwards. Since I had already repeated the tutorial multiple times to ensure that I wasn't making a mistake and the error kept occurring, I figured that I didn't want to risk destroying the mesh or causing further problems, so I saved the file as its own version and will continue with the rigging tutorials on a backup save file, which is a previous version from before any pose deformers were added but after the spine was adjusted to accommodate the smoother blending.
The rest of the sixth skinning tutorial went on to fix the third arm pose by thinning out sections of the chest and continuing to adjust the chest, shoulder, and back either manually by changing the positions of the vertices or edges and by relaxing them with the sculpting tool. The same was done with the next pose, which had the arm moving forward and initially caused deformation in the shoulder and back with a collapsed chest.
For the next two poses which were backwards and forwards twisting of the shoulder, the texture on the model was made visible so the results of the adjustments could be viewed more easily. Otherwise, a similar method to the other arm poses was used in that the vertices were relaxed to create a more natural falloff when the shoulder twisted. This completed the arm.
Pose interpolation was then created for the elbow and animation keyframed in so that pose deformers could be added to it when it bends. The main issue with the elbow initially was that volume was lost due to the placement of the joint in the arm, but could be fixed by making minor adjustments to the inside and outside of the elbow to make sure that it didn't overinflate or collapse on either side. Parts of the upper arm were also edited to create a more convincing movement.
The same was done to the wrist afterwards. In preparation to fix the issues with the shrinking, however, locators were created and positioned around the wrist as references for the movements so that the wrist size could be changed to be more consistent. Other parts of the wrist were also edited to prevent it from collapsing into the forearm when bending (the soft selection tool was done for this).
Afterwards, any animation remaining was deleted from the model completely. With the pose editor open, the shoulder joint was selected and all of the poses selected so that they could be mirrored across. The same was done with the other joints, and then each of them were run through on both sides to check that they were functioning correctly.
The seventh tutorial is focused on the lower body and begins by renaming the leg joints to 'hip' joints. Animation was also added to them in order to create the poses with the editor. The same processes as the previous tutorial were followed, wherein the pelvis, hip, and knee areas were edited by manually altering the positions of the edges and vertices or by changing them using the relaxing tool, followed by mirroring them across and checking them to make sure that they're working properly at the end.
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