MatchSeamMarkers.py

import Rhino
import rhinoscriptsyntax as rs
import scriptcontext as sc
import System.Guid

def AveragePoint3d(aPts):

    X = Y = Z = 0
    L = len(aPts)
    
    for i in range(len(aPts)):
        X += aPts[i].X
        Y += aPts[i].Y
        Z += aPts[i].Z
        
    return Rhino.Geometry.Point3d(X/L, Y/L, Z/L)
    
    
def MatchSeamMarker():
    
    crvId = rs.GetObject("Select a marker curve.", 4, preselect=True)
    if not crvId: return
    
    text = rs.GetUserText(crvId, "SeamMarkerId")
    if not text: return
    
    ids = rs.ObjectsByType(4)
    grp = rs.AddGroup()
    lines = []
    if ids:
        for id in ids:
            
            temp = rs.GetUserText(id, "SeamMarkerId")
            if temp:
                if temp == text and id != crvId:
                    p1 = AveragePoint3d([rs.CurveEndPoint(crvId), rs.CurveStartPoint(crvId)])
                    p2 = AveragePoint3d([rs.CurveEndPoint(id), rs.CurveStartPoint(id)])
                    lines.append(rs.AddLine(p1, p2))
    if len (lines) > 0:
        rs.AddObjectsToGroup(lines, grp)
    else:
        rs.DeleteGroup(grp)
                
    
if __name__ == "__main__": MatchSeamMarker()