gistfile1.lua

my_sphere = osg.MatrixTransform()

require("osgUtil")
my_line_seg = osg.LineSegment()
my_line_seg:set(osg.Vec3d(0,2,0),osg.Vec3d(0,-2,0))

my_intersect_vistor = osgUtil.IntersectVisitor()
my_intersect_vistor:addLineSegment(my_line_seg)

my_sphere:accept(my_intersect_vistor)

my_hit_list = my_intersect_vistor:getHitList(my_line_seg)

-- my_result = osgUtil.Hit()

-- my_result = my_hit_list:front();
-- terrainHeight = my_result:getWorldIntersectPoint();