Identify name of clone source at index
On 23/03/2017 at 14:02, xxxxxxxx wrote:
I'm playing about with python effectors again, trying to figure out best approach to controlling clones based on their source object names..
I made a cloner with a range of motext objects inside; 0 .. 9, a.. b, A.. B
My end goal is to be able to set clones to specific characters at specific indices.
So far I have found out about the MODATA_CLONE id value, which defines which cloner child object to use at the specified index.
This is sort of useful I think, but is it the best method for what I want;
Since I couldn't find any easy way to access the name (maybe I missed something obvious?)
I am trying to figure out a way to do it with this MODATA_CLONE value:
I could get all the childs of the cloner object, as an array, look up the letter which I would like to set at a specific index in the cloner, using something like:
def getCValue(childArray, letter) : length = len(childArray) for i, L in enumerate(childArray) : if str(letter) in L.GetName() : return float(i)/length
then to set the new values
childs = clonerObj.GetChildren() value = getCValue(childs, "a") md.SetArray(c4d.MODATA_CLONE, fillArray(value, cnt),True)
This works, but very dodgy-ly as you might imagine, most of the letters work and set the correct clones but sometimes it doesn't work and it's off by one character, I assume because its not quite matching up with the float value which the cloner uses.
Is there a more surefire way to get/set which object is used at a specific index?
Is this the best way to do this?
Thanks for your time!
On 24/03/2017 at 06:53, xxxxxxxx wrote:
The formula to get the index of a MoGraph generator's child object from a float value in MODATA_CLONE is:
cloneIndex = floor(clamp(cloneValue * numChildren, 0, numChildren-1))
Here is a Python effector code that prints these indices and the children names:
import c4d from c4d import utils from c4d.modules import mograph as mo import math def main() : md = mo.GeGetMoData(op) if md is None: return children = gen.GetChildren() numChildren = len(children) if numChildren == 0: return mdCount = md.GetCount() mdClone = md.GetArray(c4d.MODATA_CLONE) for cloneIdx in xrange(mdCount) : childIdx = int(math.floor(utils.ClampValue(mdClone[cloneIdx] * numChildren, 0, numChildren-1))) print childIdx, children[childIdx].GetName()
Note 'gen' variable is the generator object that uses the Python effector.
Also the code has to be executed in a Python effector set to Full Control mode.
About the offset by one character, add a half step to the new value to set in the MODATA_CLONE array. This half step value would be 1.0/numChildren.
On 24/03/2017 at 10:36, xxxxxxxx wrote:
Thanks so much for the advice, this is excellent.
Great idea to use ClampValue.
I ended up doing +0.5 / numChildren, 1.0 seemed to make it worse, but 0.5 seems perfect..
def clonerString(childArray, iString, cCount) : #cCount = clones count length = len(childArray) myList = [0.0] * cCount for i, c in enumerate(iString) : for j, L in enumerate(childArray) : if str(c) in L.GetName() : myList[i] = float(j)/length + 0.5/length return myList