#Generate U V Surface Points
import rhinoscriptsyntax as rs


def Main():
    
    intU = 10
    intV = 10
    Pt = {}
    
    #select surface
    srfGUID = rs.GetObject('select surface', rs.filter.surface)
    
    #find surface domain
    UDomain = rs.SurfaceDomain(srfGUID, 0)
    VDomain = rs.SurfaceDomain(srfGUID, 1)
    
    print UDomain, VDomain
    
    #set step
    Ustep = (UDomain[1] - UDomain[0]) / intU
    Vstep = (VDomain[1] - VDomain[0]) / intV
    
    print Ustep, Vstep
    
    #loop to plot points
    for i in range(intU + 1):
        for j in range(intV + 1):
            
            #define u and v values based on step
            u = UDomain[0] + Ustep * i
            v = VDomain[0] + Vstep * j
            
            #evaluate surface
            Pt[(i,j)] = rs.EvaluateSurface(srfGUID, u, v)
            
            #plot points
            point = rs.AddPoint(Pt[(i,j)])
            #rs.AddTextDot((i,j), point)
            
    for i in range(intU + 1):
        for j in range(intV + 1):
            if i > 0 and j > 0:
                rs.AddCurve((Pt[(i,j)], Pt[(i-1,j)], Pt[(i-1,j-1)], Pt[(i,j-1)], Pt[(i,j)]))
            
    
    
Main()