Houdini: Viewport navigation
Viewport navigation
pivot tumbling
mouse over any point and hit space+Z (now it rotates around that point!)
gimball/pivot axes
press ENTER to see it
move points only on XY axis
(for example in side view) find the tiny dot next to gimball, it only enables 2 axes when moving!
align handle to world/object/component
select polys to move -> rightclick on handle -> component