Editing MovieSchool 5 (section)

===Camera Motions===
One of our first movies above was a very simple zoom on an atom in an amino acid.  The first 'scene' was the entire amino acid and the 2nd 'scene' was the zoomed in atom.  We just connected the two scenes and asked PyMOL to make the transition between the two smooth.  This is the idea of camera motions in PyMOL.  (You may not know that when you click on a protein and rotate it or drag it in PyMOL you're actually moving the camera, not the protein.)

Assuming you had readied PyMOL to make your movie to get a camera motion you do the following:
* '''save the camera's first position information''': Once you have the protein/object aligned and shown in the representation of your choice, set the '''camera''' position information 
<source lang="python">
# goto the first frame
frame 1
# store the CAMERA positions ONLY
mview store
</source>
* '''save the cameras second position information''': Now using the mouse (or scripted commands) move the camera to its new position--say zooming in on an important ligand or catalytic residue.  Once that's done, tell PyMOL to store the new camera position in this frame:
<source lang="python">
# goto the first frame
frame 88
# store the CAMERA positions ONLY
mview store

# now link the two stored camera positions together:
mview reinterpolate

# play your movie
mplay
</source>

Hints:
* '''mview reinterpolate, power=1" will turn off the smoothed starting and stopping of camera motions between the scenes.  The smoothing gives a nicer feel to transitions.  Try both, see which you prefer.
* check out mview's other options--like 'wrap'
* using the three_button_motions option, you can pretty much make the entire movie w/your mouse: All->M->Store is the same as, ''mview store'', and All->M->Reinterpolate is the same as ''mview reinterpolate''.
* '''[[mview]] reset''' unstores the camera position information for this frame.

==== Camera Motions Movie Example ====
This idea should be pretty sound at this point, but examples rock, so here's another.  The pattern is:
* frame XYZ
* script the view
* mview store

<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

fetch 1te1, async=0
extract AA, c. A
extract BB, c. B
color marine, AA
color grey, BB
as surface, BB
as cartoon, AA

mset 1 x620

orient

wizard message, "Can you see the blue protein inhibiting the gray protein?"

frame 1
mview store
frame 30
mview store

### cut below here and paste into script ###
set_view (\
     0.307660401,    0.011366921,    0.951428533,\
     0.930296898,   -0.213488042,   -0.298277378,\
     0.199727684,    0.976880252,   -0.076255992,\
     0.000000000,    0.000000000, -196.781448364,\
    27.129878998,   68.309677124,   51.827075958,\
   155.143981934,  238.418914795,  -20.000000000 )
### cut above here and paste into script ###

# slowly show the inhibition
frame 120
mview store

# wait 3 seconds
frame 180
mview store

# define the inhib as the binding loop
select inhib, AA and i. 148-155
select (none)

# slowly zoom in
frame 300
zoom inhib
mview store

# stop a second
frame 330
mview store

# look around the binding pocket
frame 390
turn y, 150
mview store

# wrap back more quickly...
frame 420
turn y, -150
mview store

# one more gratuitous view
frame 500
### cut below here and paste into script ###
set_view (\
     0.943371952,    0.309539229,   -0.119302809,\
    -0.044248745,   -0.239008784,   -0.970008850,\
    -0.328769624,    0.920357347,   -0.211777285,\
     0.000000000,    0.000000000,  -30.773454666,\
    35.418403625,   72.805625916,   52.437019348,\
    20.233829498,   41.313076019,  -20.000000000 )
### cut above here and paste into script ###
mview store

frame 560
mview store

mview reinterpolate
mplay
</source>