The nice thing about using pymel is that it returns objects that usually support common operations in a more intuitive form.So in this instance meshFace.getPositions() returns a list of pymel Vector objects, which support operations such as addition, scalar division and multiplications (so you don't need to go element by element, x-y-z)
from pymel import * v1 = Vector([1,2,3]) v2 = Vector([2,3,4]) print v1 + v2 print v1 * 2 print v2 / 2 Google up info about the built-python in function 'reduce' and the 'add' function from the built-in 'operator' module you'll see how those two together can take a list of objects and add them all up together... divide the result by a scalar value and you've essentially calculated the centroid of a list of Vectors. - Ofer www.mrbroken.com On Wed, Jun 3, 2009 at 10:14 AM, Dimitry <[email protected]> wrote: > > ok i got it > > for item in arrCount: > objFace=arrMesh.getPolygonVertices(arrCount[item]) > pt1=arrMesh.vtx[objFace[0]].getPosition() > pt2=arrMesh.vtx[objFace[2]].getPosition() > centerPt=[ (pt1.x+pt2.x)/2,(pt1.y+pt2.y)/2,(pt1.z+pt2.z)/2 ] > > thank you Ofer and Chad for great support! > Best! > Dimitry > > > --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/python_inside_maya -~----------~----~----~----~------~----~------~--~---
