Difference between revisions of "Movie fade"

Type	Python Module
Download	movie_fade.py
Author(s)	Jason Vertrees and Thomas Holder
License	BSD-2-Clause
	This code has been put under version control in the project Pymol-script-repo

Revision as of 06:15, 25 February 2013

This script will help fade in and out settings in a movie. Just specify the setting, it's initial value at an initial frame and it's ending value and frame.

Usage

movie_fade setting, startFrame, startVal, endFrame, endVal [, selection ]

Examples

To fade in sticks from fully transparent to fully opaque across 60 frames do:

mset 1x60
movie_fade stick_transparency, 1, 1., 60, 0.

More complex example which involves camera motion:

fetch 1rx1, async=0
as cartoon
show surface
mset 1x80
movie.roll
movie_fade transparency,  1, 0., 40, 1.
movie_fade transparency, 41, 1., 80, 0.

@@ Line 1: / Line 1: @@
 {{Infobox script-repo
 |type      = Python Module
-|author    = [[User:Inchoate|Jason Vertrees]]
+|filename  = movie_fade.py
-|license   = [http://www.opensource.org/licenses/BSD-2-Clause BSD]
+|author    = [[User:Inchoate|Jason Vertrees]] and [[User:Speleo3|Thomas Holder]]
+|license   = BSD-2-Clause
 }}
-= Overview =
+This script will help fade in and out settings in a movie. Just specify the setting, it's initial value at an initial frame and it's ending value and frame.
-This script will help fade in and out settings in a movie. Just specify the setting, it's initial value at an initial frame and it's ending value and frame. For example, to fade in sticks from fully transparent to fully opaque across 60 frames do,
-<source lang="python">
+== Usage ==
-movie_fade stick_transparency, 1, 1., 60, 0.
-</source>
-For help, type,
+ movie_fade setting, startFrame, startVal, endFrame, endVal [, selection ]
-<source lang="python">
-# syntax
-movie_fade ?
+== Examples ==
-# usage
+To fade in sticks from fully transparent to fully opaque across 60 frames do:
-help movie_fade
+<source lang="python">
+mset 1x60
+movie_fade stick_transparency, 1, 1., 60, 0.
 </source>
+More complex example which involves camera motion:
 <source lang="python">
-from pymol import cmd, stored
+fetch 1rx1, async=0
-import string
+as cartoon
-import math
+show surface
-#
+mset 1x80
-# Movie fades work great, when there is only one mdo command
+movie.roll
-# per frame.  mdo does NOT save a stack of commands per frame
+movie_fade transparency,  1, 0., 40, 1.
-# as one might thing it just consistently updates itself.
+movie_fade transparency, 41, 1., 80, 0.
-#
+</source>
-def mStore(frame, theCommand):
-	print "Storing %s into frame %d" % (theCommand, frame)
-	if len(stored.mdoCache)<frame:
-		diff = frame - len(stored.mdoCache)
-		for x in range(diff): stored.mdoCache.append("")
-	stored.mdoCache[frame-1] = stored.mdoCache[frame-1] + ";" + theCommand
-def mRunCache():
+== See Also ==
-	for f in range(len(stored.mdoCache)):
-		cmd.mdo(f+1, stored.mdoCache[f])
-def mClearCache():
+* [[mdo]]
-	for f in range(len(stored.mdoCache)):
+* [[mappend]]
-		cmd.mdo(f+1, "")
+* [[set]]
-	stored.mdoCache = []
-def movie_fade( setting, startFrame, startVal, endFrame, endVal, smoothing="linear"):
-	"""fades and smooth transitions"""
-	try:
-		from pymol import stored
-		stored.mdoCache
-	except AttributeError:
-		print "mdoCache not found, creating new."
-		stored.mdoCache = []
-	startFrame = float(startFrame)
-	endFrame   = float(endFrame)
-	startVal   = float(startVal)
-	endVal     = float(endVal)
-	frameRange = math.fabs(endFrame-startFrame)
-	# boundary conditions to control the stricly <
-	# aspect of the range function
-	if startFrame<endFrame: endFrame = endFrame + 1.
-	if startFrame>endFrame: endFrame = endFrame - 1.
-	for fr in range(int(startFrame), int(endFrame)):
-		fracV2 = float((fr-startFrame)/frameRange)
-		fracV1 = 1.0 - fracV2
-		totalIntensity = fracV1 * startVal + fracV2 * endVal
-		if len(string.split(setting,','))==1:
-			mStore(fr,  "set %s, %1.3f, quiet=1" % (setting, totalIntensity))
-		else:
-			(s1,s2) = string.split(setting,',')
-			mStore(fr,  "set %s, %1.3f, %s, quiet=0" % (s1.strip('"'), totalIntensity, s2.strip('"')))
-	mRunCache()
-cmd.extend("movie_fade", movie_fade)
-cmd.extend("movie_fade_clear_cache", mClearCache)
-</source>
 [[Category:Script_Library]]
 [[Category:UI_Scripts]]

Difference between revisions of "Movie fade"

Revision as of 06:15, 25 February 2013

Usage

Examples

See Also

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