27/04/2019
This effector helps, when you are scaling clones and default MoGraph operations gives a weird results.
import c4d
from c4d.modules import mograph as mo
def main():
method = op[c4d.ID_USERDATA,2] # User Data: Method
negative = op[c4d.ID_USERDATA,3] # User Data: Negative Values
md = mo.GeGetMoData(op) # Get MoData
if md is None: return False # If there is no MoData, stop processing
cnt = md.GetCount() # Get clone count
marr = md.GetArray(c4d.MODATA_MATRIX) # Get MoData matrix
farr = md.GetArray(c4d.MODATA_FLAGS) # Get MoData flags
for i in xrange(0, cnt): # Iterate through clones
sx = marr[i].v1.GetNormalized()[0] # Get scale x
sy = marr[i].v2.GetNormalized()[1] # Get scale y
sz = marr[i].v3.GetNormalized()[2] # Get scale z
if negative == 1: # If 'Negative Values' checkbox is ticked
if sx < 0: # If x is smaller than zero
sx = 0 # Set x to zero
if sy < 0: # If y is smaller than zero
sy = 0 # Set y to zero
if sz < 0: # If z is smaller than zero
sz = 0 # Set z to zero
if sx == 0: # If x-scale is zero
marr[i].v1 = c4d.Vector(0.0000001,0,0) # Set x-scale to extreme small
if sy == 0: # If y-scale is zero
marr[i].v2 = c4d.Vector(0,0.0000001,0) # Set y-scale to extreme small
if sz == 0: # If z-scale is zero
marr[i].v3 = c4d.Vector(0,0,0.0000001) # Set z-scale to extreme small
if method == 1: # If method is set to 'Hide'
if sx == 0 or sy == 0 or sz == 0: # If some of the axis are zero
farr[i] &= ~(c4d.MOGENFLAG_CLONE_ON) # Hide the clone
md.SetArray(c4d.MODATA_FLAGS, farr, True) # Set MoData flags
md.SetArray(c4d.MODATA_MATRIX, marr, True) # Set MoData matrix
return True # Everything is fine
