PowerMate Dial OS X

Link to W. G. Scott's web page (off site). Use of the script below is explained in that link. Briefly, the PowerMate driver must be installed and configured as explained in detail in that link before this script will work.

from pymol import cmd

# Define aliases for mapping in [x,y,z] rotations and translations into a single Powermate
# dial.  Toggling between the three is possible if you then assign these to special keys.

# Functions for x,y,z rotations and translations using Powermate dial
# Program F1 and F2 for Rotate Right and Rotate Left
# Program F3 and F4 for Click & Rotate Right and Click & Rotate Left
# Program F5 for  Click  (to toggle between dialsets)

# dialset = 2

def dialx(): \
    global dialset \
    dialset = 1 \
    cmd.set_key ('F1', cmd.turn,('x',-2.0)) \
    cmd.set_key ('F2', cmd.turn,('x',2.0)) \
    cmd.set_key ('F3', cmd.move,('x',-0.5)) \
    cmd.set_key ('F4', cmd.move,('x',0.5)) \
    print "dialset ", dialset, " [ X ]\n" \
    return dialset

def dialy(): \
    global dialset \
    dialset = 2 \
    cmd.set_key ('F1', cmd.turn,('y',-2.0)) \
    cmd.set_key ('F2', cmd.turn,('y',2.0)) \
    cmd.set_key ('F3', cmd.move,('y',-0.5)) \
    cmd.set_key ('F4', cmd.move,('y',0.5)) \
    print "dialset ", dialset, " [ Y ]\n" \
    return dialset


def dialz(): \
    global dialset \
    dialset = 3 \
    cmd.set_key ('F1', cmd.turn,('z',-2.0)) \
    cmd.set_key ('F2', cmd.turn,('z',2.0)) \
    cmd.set_key ('F3', cmd.move,('z',-0.5)) \
    cmd.set_key ('F4', cmd.move,('z',0.5)) \
    print "dialset ", dialset, " [ Z ]\n" \
    return dialset

def toggle_dial(): \
    if dialset == 1 : \
        print "Changing to y" \
        dialy() \
    elif dialset == 2 : \
        print "Changing to z" \
        dialz() \
    elif dialset == 3 : \
        print "Changing to x" \
        dialx() \
    else: print "Dial assignment isn't working"


cmd.set_key ('F5', toggle_dial)

# Start default dial state for rotate y  (arbitrary choice)

dialy()