WotS
02-06-2013, 11:02 PM
Hello.
This is one of the most useful scripts for After Effects, that adds oscillatory train to any animated property.
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time){
n--;
}
}
if (n == 0){
t = 0;
}else{
t = time - key(n).time;
}
if (n > 0){
v = velocityAtTime(key(n).time - thisComp.frameDuration/10);
amp = .5;
freq = 4.0;
decay = 2.0;
value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
}else{
value;
}
Script can be added as expression to any property move, size, rotation, opacity, color, etc - and influence this feature with the keys, adding oscillatory train in the end. So, I'm trying to write this script on Python in Cinema 4D. And here is what I got.
import math
import c4d
#Welcome to the world of Python
def main():
obj = doc.SearchObject("Test_Cube")
track = obj.GetFirstCTrack()
curve = track.GetCurve()
numkeys = curve.GetKeyCount()
n = 0
time = doc.GetTime()
fps = doc.GetFps()
curFrame = time.GetFrame(fps)
lst = []
for i in range(0, numkeys):
key = curve.GetKey(i).GetValue()
keytime = curve.GetKey(i).GetTime().GetFrame(fps)
lst.append(keytime)
lstS = []
for i in range(0,len(lst)):
sub = abs(lst-curFrame)
lstS.append(sub)
for i, j in enumerate(lstS):
if j == min(lstS):
MinInd = i
nearestKey = lst[MinInd]
for i, j in enumerate(lst):
if j == nearestKey:
nearestKeyIndex = i
if numkeys > 0:
n = nearestKeyIndex
if nearestKey > curFrame:
n = n-1
if n == 0:
t = 0
else:
t = curFrame - nearestKey
lastKeyValue = curve.GetKey(numkeys-1).GetValue()
previousKeyValue = curve.GetKey(numkeys-2).GetValue()
curValue = curve.GetValue(time,fps)
if n > 0:
v = (lastKeyValue - previousKeyValue)*fps
amp = 0.5
freq = 4
decay = 2
curValue + v*amp*math.sin(freq*t*2*3.14)/math.exp(decay*t)
else:
curValue
http://cs419629.userapi.com/v419629100/24a8/KbzWb_iTeUs.jpg
In Cinema 4D there are no such functions as [I]nearestKey and velocityAtTime unlike After Effects. My script does not work in Cinema 4D. For writing it I used the Python tag. Compile says "No errors". This script is Executed. But not the desired effect. There is no change in the object's animation. I count on your help guys.
P.S. I am sorry for my bad English
This is one of the most useful scripts for After Effects, that adds oscillatory train to any animated property.
n = 0;
if (numKeys > 0){
n = nearestKey(time).index;
if (key(n).time > time){
n--;
}
}
if (n == 0){
t = 0;
}else{
t = time - key(n).time;
}
if (n > 0){
v = velocityAtTime(key(n).time - thisComp.frameDuration/10);
amp = .5;
freq = 4.0;
decay = 2.0;
value + v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t);
}else{
value;
}
Script can be added as expression to any property move, size, rotation, opacity, color, etc - and influence this feature with the keys, adding oscillatory train in the end. So, I'm trying to write this script on Python in Cinema 4D. And here is what I got.
import math
import c4d
#Welcome to the world of Python
def main():
obj = doc.SearchObject("Test_Cube")
track = obj.GetFirstCTrack()
curve = track.GetCurve()
numkeys = curve.GetKeyCount()
n = 0
time = doc.GetTime()
fps = doc.GetFps()
curFrame = time.GetFrame(fps)
lst = []
for i in range(0, numkeys):
key = curve.GetKey(i).GetValue()
keytime = curve.GetKey(i).GetTime().GetFrame(fps)
lst.append(keytime)
lstS = []
for i in range(0,len(lst)):
sub = abs(lst-curFrame)
lstS.append(sub)
for i, j in enumerate(lstS):
if j == min(lstS):
MinInd = i
nearestKey = lst[MinInd]
for i, j in enumerate(lst):
if j == nearestKey:
nearestKeyIndex = i
if numkeys > 0:
n = nearestKeyIndex
if nearestKey > curFrame:
n = n-1
if n == 0:
t = 0
else:
t = curFrame - nearestKey
lastKeyValue = curve.GetKey(numkeys-1).GetValue()
previousKeyValue = curve.GetKey(numkeys-2).GetValue()
curValue = curve.GetValue(time,fps)
if n > 0:
v = (lastKeyValue - previousKeyValue)*fps
amp = 0.5
freq = 4
decay = 2
curValue + v*amp*math.sin(freq*t*2*3.14)/math.exp(decay*t)
else:
curValue
http://cs419629.userapi.com/v419629100/24a8/KbzWb_iTeUs.jpg
In Cinema 4D there are no such functions as [I]nearestKey and velocityAtTime unlike After Effects. My script does not work in Cinema 4D. For writing it I used the Python tag. Compile says "No errors". This script is Executed. But not the desired effect. There is no change in the object's animation. I count on your help guys.
P.S. I am sorry for my bad English