setup two wall system with one single PC and one quadro graphics card

[vrmdl]

Hi,

Thanks for your reply. I found a strange thing in my codes. I ran exactly the same code as in the following. I found the image is correct every other run. In other words, the first time run gives a correct image. While in the second run, I got a wrong image. If I have a third run, I got a correct image again. Can anyone help me with it? Thanks.

The following codes simply draw a straight line and link to a my fly stick.


import viz
import vizact
import vizcam
import vizcave
import viztracker


# Declare constants defining the CAVE dimensions
W = 3.410 # 10 feet wide
H = 2.140 #7.5 feet tall
D = 2.200 # 7.5 feet deep

offset_bottom_wall=0.0

C0 = -W/2,H/2,-D/2 # Front Wall: C1,C2,C5,C6
C1 = -W/2,H/2-offset_bottom_wall,D/2 # Left Wall: C0,C1,C4,C5
C2 = W/2,H/2-offset_bottom_wall,D/2 # Right Wall: C2,C3,C6,C7
C3 = W/2,H/2,-D/2 # Bottom Wall: C5,C6,C4,C7

C4 = -W/2,-H/2-offset_bottom_wall,-D/2
C5 = -W/2,-H/2-offset_bottom_wall,D/2
C6 = W/2,-H/2-offset_bottom_wall,D/2
C7 = W/2,-H/2-offset_bottom_wall,-D/2

#Create front wall
FrontWall = vizcave.Wall( upperLeft=C1, # 0, 2.286, 3.048
upperRight=C2, # 3.048, 2.286, 3.048
lowerLeft=C5, # 0, 0, 3.048
lowerRight=C6, # 3.048, 0, 3.048
name='Front Wall' )

#Create bottom wall
BottomWall = vizcave.Wall( upperLeft=C5,
upperRight=C6,
lowerLeft=C4,
lowerRight=C7,
name='Bottom Wall' )

#Create cave object
cave = vizcave.Cave()

frontWindow=viz.MainWindow
frontWindow.setSize(1,.5)
frontWindow.setPosition([0,1])
cave.addWall(FrontWall, window = frontWindow)

bottomWindow = viz.addWindow()
bottomWindow.setSize(1,.5)
bottomWindow.setPosition([0,0.5])
cave.addWall(BottomWall, window = bottomWindow)

frontWindow.stereo(viz.QUAD_BUFFER)
bottomWindow.stereo(viz.QUAD_BUFFER)

#Create tracker object using the keyboard (WASD keys control the viewpoint, the user's eye location)
#Make the starting location for the user's eye above origin
viewtracker = viztracker.KeyboardPos()
viewtracker.setPosition([0.0,0,0.0])

#Pass the viewpoint tracker into the cave object so it can be automatically updated
cave.setTracker(pos=viewtracker,ori=viewtracker)

#Create CaveView object for manipulating the entire cave environment
#The caveorigin is a node that can be adjusted to move the entire cave around the virtual environment
caveorigin = vizcave.CaveView(viewtracker)

#Create another tracker using the keyboard and mouse (arrow keys adjust position, mouse changes orientation)
origintracker = viztracker.KeyboardMouse6DOF()
origintracker.setPosition(0,0.5,0)

#Link the keyboard/mouse so that it moves the cave and user around the virtual environment
originlink = viz.link (origintracker, caveorigin)


vrpn = viz.add('vrpn7.dle') # can be vrpn6.dle or vrpn7.dle depending on vrpn version
headTrkr = vrpn.addTracker('DTrack@localhost',0)
flyTrkr = vrpn.addTracker('DTrack@localhost',2)
flyStick_button = vrpn.addButton('DTrack@localhost')
joystick = vrpn.addAnalog('DTrack@localhost')

#Negate Z value of position
flyTrkr.swapPos([1,2,-3])
#Negate X,Y value of quaternion
flyTrkr.swapQuat([-1,-2,3,4])


#Create line of length 1
length=10
viz.startlayer(viz.LINES)
viz.vertexColor(viz.GREEN)
viz.lineWidth(4)
viz.vertex(0,0,0)
viz.vertex(0,0,length)
pointer_line = viz.endlayer()
pointer_line.dynamic()

link_pointer = viz.link( flyTrkr, pointer_line )

viz.go(viz.FULLSCREEN|viz.QUAD_BUFFER)