WorldViz User Forum sensors confused
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#1
03-14-2010, 07:26 PM
 hahaho Member Join Date: Mar 2010 Posts: 6
sensors confused

I want to use the sensor of the three.
these sensors want to fixed number[A,B,C], (no value[x,y,z])

for example)

sensorA(fixed number) = (10,10,10) <-x,y,z (receive(change) value)
sensorB(fixed number) = (20,20,20) <-x,y,z (receive(change) value)
sensorC(fixed number) = (30,30,30) <-x,y,z (receive(change) value)

so, i am used this code.

Code:
```vrpn = viz.add('vrpn7.dle')

def update():
position1 = sensorA.getPosition()
position2 = sensorB.getPosition()
position3 = sensorC.getPosition()

a =  position1[0]
a1 = position1[1]
a2 = position1[2]

b = position2[0]
b1 = position2[1]
b2 = position2[2]

c = position3[0]
c1 = position3[1]
c2 = position3[2]

A = [a,0,a2]
B = [b,0,b2]
C = [c,0,c2]

# vector
v1 = vizmat.VectorToPoint(A,B)
v2 = vizmat.VectorToPoint(A,C)
v = vizmat.AngleBetweenVector(v1,v2)
Forearm.setEuler([0,0,-v])
UpperArm.setEuler([0, -30, -80])

print v

vizact.ontimer(0,update)```
but , the sensor's number is frequently change.

for example)

sensorB = (10,10,10)
sensorA = (20,20,20)
sensorC = (30,30,30)
.
.
.
sensorC = (10,10,10)
sensorA = (20,20,20)
sensorB = (30,30,30)
.
.

How do i receive the fixed sensor's number?
#2
03-15-2010, 07:42 AM
 mspusch WorldViz Team Member Join Date: Feb 2003 Posts: 211
If you are using marker-ID markers, you should contact support@worldviz.com about this, if there is marker swapping.

if you use non-marker-ID markers, then you should have a look here for algorithsm that help to distinguish which marker is which for a 2-hands / head setup:

#3
03-15-2010, 04:17 PM
 Jeff WorldViz Team Member Join Date: Aug 2008 Posts: 2,449
If you are using non-marker ID markers another way of ditinguishing head and hands is to use the Mocap post-process plug-in within PPT Studio.

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