Rotation

[farshizzo]

Hi Buster,

If you attach an object to the HEAD then it will always be centered around the viewer. Let's say that your constellations are in a file called 'constellation.wrl', then you would simply do the following:

stars = viz.add('constellation.wrl',viz.HEAD)

Then when you rotate the model it will be rotating around the head, no matter where the viewer moves.

Are you importing the constellations from a model or generating them on-the-fly? If you're generating them on-the-fly then you would simply do something like the following:

viz.startlayer(viz.POINTS)
viz.vertex(...)
.
.
stars = viz.endlayer(viz.HEAD)

Look at the file spindots.py in the Vizard20/tutorial/onthefly. It is a simple example of creating a sphere of points and rotating them. Good luck!