Point of an intersecting line and plane

[Jeff]

You could use the viz.pick command to get the point of intersection between the mouse and the object it is pointing at. Here's an example:

import viz
import vizact
import vizshape

viz.go()

dojo = viz.add('dojo.osgb')
sphere = vizshape.addSphere(radius=0.1,color=viz.GREEN)
sphere.disable(viz.PICKING)

def moveSphere():
	info = viz.pick(info=True)
	point = info.point
	sphere.setPosition(point)
	
vizact.onupdate(0,moveSphere)