Creating 3D Game Art for the iPhone with Unity Part 6 pptx

As you will see in the next section, setting up these controls for the feet and

legs were actually a simple task, yet I’m getting a lot of articulation. These con￾trols allow me to move the leg, animate toe taps, stomp the heel, and position

the knees as well as when used together help to create a good articulation in

run and walk cycles.

Next, let’s take a look at the arms. The arms have an IK target as well. The

Hand Bone is constrained to the IK target so that it drives the translation and

rotation of the hand, and I can hide the actual Hand Bone. Basically by remov￾ing the Hand Bone as a control, I have one less control to worry about and a

cleaner rig. I then have an elbow control, which is also a Pole Vector on the

arms IK Constraint just as with the legs. This allows me to position the elbow

as shown in Fig. 6.7.

FIG 6.4 The Foot Bone Is Used

to Raise the Heel. Notice that Its

Direction Has Been Flipped.

FIG 6.5 The Toe Bone Allows You to

Articulate the Tip of the Boot.

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Creating 3D Game Art for the iPhone with Unity

FIG 6.6 The Knee Bone Is Set as the

Pole Target in the IK Constraint for the

Leg. It Allows Me to Point the Knee.

FIG 6.7 The Elbow Bone Is Set at the Pole Target in the IK Constraint for the Arm. It Allows Me to Position the Elbow.

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Animation Using Blender