vizcave coordinates
Hello,
I am using a 3DMonitor with shutter-glasses and a chinrest to stable the user's head. I use vizcave since I want to apply an asymmetric view frustrum. I would like to set the origin of the coordinate system to the upper left corner of my display (because this is the coordinate system my eye-tracker uses). However, my code does not seem to set the origin to the display corner. import viz import vizshape import vizcave import viztracker width = 0.60 height = 0.335 distance = 0.70 PowerWall = vizcave.Wall(upperLeft=(0,0,0), upperRight=(width,0,0), lowerLeft=(0,-height,0), lowerRight=(width, -height, 0)) viz.go(viz.QUAD_BUFFER|viz.FULLSCREEN) cave = vizcave.Cave() cave.addWall(PowerWall) head_tracker = viztracker.Keyboard6DOF() head_tracker.setPosition (width/2, -height/2, -distance) cave.setTracker(head_tracker) What am I doing wrong? Could I set the origin to the display corner? If yes, how? Also, I noticed, that although I used meters to specify the positions, my scaled objects seem to have the wrong size (far smaller). What do I need to consider concerning scale? Greetings, Rebekka |
How are you determining the origin is not set properly? Try setting the origin to be directly below the user's head on the ground. Does that work for you?
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I am adding world axes with
world_axes = vizshape.addAxes() X = viz.addText3D('X',pos=[0.1,0,0],color=viz.RED,scale=[0.3,0.3,0.3],parent=world_axes) Y = viz.addText3D('Y',pos=[0,0.1,0],color=viz.GREEN,scale=[0.3,0.3,0.3],align=viz.ALIGN_CENTER_BASE,parent=world_axes) Z = viz.addText3D('Z',pos=[0,0,0.1],color=viz.BLUE,scale=[0.3,0.3,0.3],align=viz.ALIGN_CENTER_BASE,parent=world_axes) The world axes are not displayed in the upper left corner of the display, but somewhere behind and below the user. How would I be able to set the upper left corner of the display to the origin of the world axes and define all positions in relation to that point? |
Bumping the thread as I've had no reply in over a week.
Do you need any additional information to answer my question? |
Does it work as expected if you set the origin to be just below the user and calculate the wall coordinates from that location?
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Hi Jeff and everyone,
I found my mistake. I realized, I have to additionally set up a link between the head tracker and the main viewpoint as described in this thread: http://forum.worldviz.com/showthread...hlight=vizcave Adding this line solved my problem: vizcave.CaveView(head_tracker) Thanks, Rebekka |
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