2つのメッシュのバーテックスから、それぞれ一番近いやつを検索してきてフィットさせるやつ

fitToVertex.py

# -*- coding: utf-8 -*-
import pymel.core as pm
import pymel.core.datatypes as dt
import threading
import multiprocessing


def isMesh(trans):
    if type(trans.getShape()) == pm.nodetypes.Mesh:
        return True
    return False


def divide_selection_list(selection_list):
    if 2 != len(selection_list):
        raise Exception(u'Please select two mesh.')
    (first, last) = selection_list[0], selection_list[1]
    if not isMesh(first) or not isMesh(last):
        raise Exception(u'Please select two mesh.')
    return first, last


def getNearest(vectors, point):
    nearest = vectors[0]
    diff = vectors[0] - point
    length = diff.length()
    for v in vectors[1:]:
        c = v - point
        clength = c.length()
        if clength < length:
            nearest = v
            length = clength
    return nearest


def setNearest(vectors, vv, result):
    for v in vv:
        vec, vtx = v
        nearest = getNearest(vectors, vec)
        result.append((vtx, nearest))


def getVtxs(vtxs, count, i):
    if i is 0:
        return vtxs[:len(vtxs) / count]
    if i is count - 1:
        return vtxs[len(vtxs) / count * i:]
    return vtxs[len(vtxs) / count * i:len(vtxs) / count * (i+1)]


def execute():
    (first, last) = divide_selection_list(pm.ls(sl=True))
    firstPosition = dt.Vector(pm.xform(first, query=True, worldSpace=True, translation=True))
    lastPosition = dt.Vector(pm.xform(last, query=True, worldSpace=True, translation=True))
    lastVtxsPositions = []
    for v in last.getShape().vtx:
        t = dt.Vector(pm.xform(v, query=True, worldSpace=True, translation=True))
        lastVtxsPositions.append(t + lastPosition - firstPosition)
    count = multiprocessing.cpu_count()
    threads = []
    result = []
    for i in xrange(count):
        vtxs = getVtxs(first.getShape().vtx, count, i)
        vv = [(dt.Vector(pm.xform(v, query=True, worldSpace=True, translation=True)), v) for v in vtxs]
        thread = threading.Thread(target=setNearest, name="thread{}".format(i), args=(lastVtxsPositions, vv, result))
        print 'Start Thread{}'.format(i)
        thread.start()
        threads.append(thread)
    for t in threads:
        t.join()
    for r in result:
        v, nearest = r
        nearest = nearest + firstPosition
        pm.xform(v, worldSpace=True, translation=nearest)