3D Game Programming

But why 150? The answer is that the radius of the body is 100 and the radius

of the hand is 50. We need to move the hand 100 + 50, or 150 in the X

(left/right) direction:

If we only moved the center of the hand 100, then we would end up with the

hand partly inside the body:

Try This Yourself

If you’re not convinced, try it yourself. Change the number for the

X position by fiddling with the first number in right_hand.position.set(-

150, 0, 0). Try it for both the left and right hand. Don’t make them

too big, though, or they won’t even be on the screen anymore!

3.4 Adding Feet for Walking

For the feet, we’ll again use spheres of size 50. I’ll leave it up to you to figure

out how to add the relevant lines.

Some hints:

• Don’t move the feet left/right as far as we did the hands. The feet should
  be underneath the body.

report erratum • discuss

Adding Feet for Walking • 29

Prepared exclusively for Michael Powell