Using bone.lookat for bones other than head

[Jeff]

Here is the forearm added to an example that Farshizzo recently posted for using lookat. It works for other bones, I just had to subtract 90 degrees from the yaw value to make it look right.

import viz
import vizact
viz.go()

viz.add('tut_ground.wrl')

#Create animating ball
ball = viz.add('white_ball.wrl')
ball.add(vizact.sequence(vizact.goto(-2,1,0),vizact.goto(2,1,0),viz.FOREVER))

#Create male avatar
avatar1 = viz.add('vcc_male.cfg',pos=(-2,0,3),euler=(180,0,0))
avatar1.state(1)
head1 = avatar1.getBone('Bip01 Head')
head1.lock()

#Create female avatar
avatar2 = viz.add('vcc_female.cfg',pos=(2,0,3),euler=(180,0,0))
avatar2.state(1)
head2 = avatar2.getBone('Bip01 Head')
forearm = avatar2.getBone('Bip01 R Forearm')

head2.lock()

def UpdateAvatarHead():
	"""Update avatars to look at ball position"""
	pos = ball.getPosition()
	
	head1.lookat(pos,0,viz.AVATAR_WORLD)
	head2.lookat(pos,0,viz.AVATAR_WORLD)
	
	forearm.lookat(pos,0,viz.AVATAR_WORLD)
	ori = forearm.getEuler(viz.AVATAR_WORLD)
	forearm.setEuler([ori[0] - 90, ori[1], ori[2]], viz.AVATAR_WORLD)
	

vizact.ontimer(0,UpdateAvatarHead)

viz.MainView.move(0,0,-5)