Saturday, 26 March 2016

E4 Ident Progress (Maya) - Building the Skeleton

I started to build the skeleton for my character. The skeleton consists of joints and bones, joints can be placed and are the pivot points between bones. Bones are connections between joints, the process of creating these connections is called parenting. This is a connection between a child and a parent, the parent is the leader and however the leader translates, rotates or scales, the child will follow along and do exactly the same as the parent except the child's values will still be at 0 when following along with the parents modifications. It is only when the child is moved itself that it gains values and the parent will not move with the child.

There are different ways to use the rotate tool in Maya, or rather there are different ways to use the rotate tool to rotate objects differently. For example, under the settings for the rotate tool there are options to set it to world or local. Setting it to world means it is aligned with the graph and the top, front, side viewpoints, however setting it to local means the rotate tool is aligned with the object itself. This local setting is very useful for aligning the axis of the joints. Aligning the axis of the joints correctly is very important because otherwise the rotation axis will rotate an odd unrelated direction that is no help in moving your character realistically. I encountered this problem with the legs where they were rotating out to the side instead of forward and up. 

I could have solved this problem by rotating the joint manually and eyeing where it would be most accurate but instead i decided to use a script that i downloaded off the internet that automatically aligns all the joints in the hierarchy so that each joint's rotation axis is pointing to the next joint. Even though i am still learning Maya i think it is alright to use scripts to speed up the process aslong as i understand what the script is doing and aslong as i understand how i would do it without the script. In this case i used the script because it is alot more accurate than doing it manually.  

At first the joint on the wrist was hard to align because it split off into 5 different joint chains for the fingers and the script i was using was not working for this joint so i had to remove the fingers except the middle finger and then align the wrist joint to the middle finger joint. I then moves the fingers back and parented them back to the wrist joint.






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