Bones Tutorial      by Brett Fattori
Part II   Adjusting the Joints

Fig. 3

In Figure 3, you see that we are now working with a 2D Spherical Joint. There are two 1D Hinge Joints that comprise this joint. One of the joints is in the XZ plane and the other is in the XY plane. If you look at Figure 4, you'll see this orientation visually. You can see that the blue "hinge" (in the XZ plane) affects how much the arm can be raised and lowered. You can also see that the red "hinge" (in the XY plane) affects how much the arm can be moved forward or back.

Fig. 4
 
Looking at the blue "hinge", you can see that the joint is going to allow too much movement towards the body. In fact, no one can move there arm that far. You'll need to adjust blue limit 1 that controls that range of motion so that it'll stop the arm just before it touches the body. The same goes for blue limit 2. But, in its case, it doesn't travel far enough. There are two ways to change this, visually and numerically. I prefer to use the numeric way, so that's what we'll be looking at next.

© Copyright 1998, Brett Fattori   

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