Editing MovieSchool 5 (section)

===Object Motions===

Now that we're experts at moving the PyMOL camera around, let's start moving objects around while keeping the camera steady.  To do this '''you must have matrix_mode set to 1''', otherwise PyMOL won't save your object's repositioning.

Let's use the same proteins as from the above inhibitor example.  This time, let's try to get a simple movie that shows one of the proteins and then have the other one fly in to do the inhibiting.

<source lang="python">
# setup PyMOL for movies
reinitialize
set matrix_mode, 1
set movie_panel, 1
set scene_buttons, 1
set cache_frames, 1
config_mouse three_button_motions, 1

# download the complex and setup it up
fetch 1te1, async=0
extract AA, c. A
extract BB, c. B
color marine, AA
color grey, BB
as surface, BB
as cartoon, AA

# intialize the movie 
mset 1 x410

# orient the scene
set_view (\
     0.423117876,    0.061672822,    0.903973043,\
     0.789699256,   -0.514252067,   -0.334546506,\
     0.444237947,    0.855418444,   -0.266292989,\
     0.000107866,   -0.000027858, -196.784057617,\
    28.171787262,   70.919288635,   52.095287323,\
   155.143981934,  238.418914795,  -20.000000000 )

# move the inhibitor off the screeen
translate [0,0,100], object=AA

# first movie scene
frame 1
wizard message, "Let's watch the binder float it, while the camera doesn't move."
mview store, object=AA
mview store, object=BB

# 2 second pause for the user to catch up
frame 60
mview store, object=AA
mview store, object=BB

frame 300
# slide the inhibitor in from over the camera.  :-)
translate [0,0,-100], object=AA
mview store, object=AA
mview interpolate, object=AA

# store & wait 2 seconds...
frame 360
mview store, object=AA
mview store, object=BB
mview reinterpolate, object=AA
mview reinterpolate, object=BB

# 'explode' apart
frame 380
translate [-70, 70, 70], object=AA
translate [70, -70, -70], object=BB
mview store, object=AA
mview store, object=BB
mview reinterpolate, object=AA
mview reinterpolate, object=BB

mplay
</source>

Hints:
* Use the mouse to get the 'right orientation &amp; zoom'.  Then use [[get_view]] to get the view matrix.  Finally, store that camera-position view matrix in your script.  Works every time.
* For object motions, the command '''translate [-70,70,70], object=AA''' would be the same as using the mouse and moving the object AA -70 units on the X-axis, +70 units on the Y and 70 on the Z.  If you don't use the '''object=''' you will not get the desired effect.
* For the above 'explosion' you can get quick motions by interpolating a large change over just a few frames.