vizcave not working properly - coordinate systems

[jpriede]

Thanks farshizzo. What you explained is exactly what I expect. I expect cave_origin to be a magic carpet, and head_tracker to be the user standing on said carpet.

In the below code, I am trying to make a head_tracker, without a magic carpet, but I must be doing something wrong because it doesn't behave as such.

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import viz
import vizcave
import viztracker

viz.go()
viz.add('gallery.ive')
height = 3
width = 4
depth = 3

A=-width/2,height,depth
B=width/2,height,depth
C=-width/2,0,depth
D=width/2,0,depth

cave = vizcave.Cave()
FrontWall = vizcave.Wall(
upperLeft=A,
upperRight=B,
lowerLeft=C,
lowerRight=D,
name='Front Wall')

cave.addWall(FrontWall)
cave.drawWalls()

viewTracker = viztracker.Keyboard6DOF()
cave.setTracker(viewTracker)

[farshizzo]

The reason your script does not behave properly is because it is not setting up any link between the head tracker and the main viewpoint. As I mentioned previously, the CaveView class is used to setup such a link. If you don't need the magic carpet functionality, then simply ignore the cave_origin object, which defaults to [0,0,0] anyway. Adding the following code to your script should fix the issue:

vizcave.CaveView(viewTracker)

If you insist on not using the CaveView class, then you can manually create the link between the head tracker and main view using the following code:

viz.link(viewTracker,viz.MainView,mask=viz.LINK_POS)

Both the code snippets above are functionally equivalent. The CaveView class just provides the added magic carpet functionality, which is purely optional.