Ex03B_PolyPlane_Deborah&Claudia

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## Ex03B_Move Cvs of a Nurbs according to Locator direction
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import maya.cmds as cmds
import math

#define distance between PolFaces and locator
def magnitude (v):
    #v is a list of x,y,z values
    x= v[0]
    y= v[1]
    z= v[2]
    m= math.sqrt ( (x*x) + (y*y) + (z*z) )
    return m
    
def distance (posVert, posLoc):
    #subtract both vectors
    x1= posVert[0]
    y1= posVert[1]
    z1= posVert[2]
    x2= posLoc[0]
    y2= posLoc[1]
    z2= posLoc[2]
    x= x1 - x2
    y= y1 - y2
    z= z1 - z2
    m= magnitude ([x,y,z])
    return m
    
#define moveToLocator function
def moveToLocator():
    # A) get all the verticesNames of a plane
    allVertices= cmds.ls ("pPlane1.vtx[:]", fl=1)
    
    #create an empty list to store the points
    MyVerts=[]
        
    #get selected Locator
    selLoc= cmds.filterExpand(sm=22)
    
    #loop through vertices
    for v in allVertices:
        pos= cmds.pointPosition(v)
        x= pos[0]
        y= pos[1]
        z= pos[2]
        
        #find distance to Locator
        posVert= cmds.pointPosition(v)
        posLoc= cmds.pointPosition(selLoc)
        d= distance(posVert, posLoc)
        print d
        cmds.move (d,3,d,v,r=True)
        
        #store the cvs in a list
        MyVerts.append(allVertices)

#call the function
moveToLocator()