#!/bin/python

import sys
import re

def offToJs(offFile):
    wsre = re.compile("[ \r\n\t]+")
    
    off = open(offFile, "r")
    
    count = 0
    nVerts = 0
    nFaces = 0
    nEdges = 0

    closedverts = False

    maxcoord = [0, 0, 0]
    mincoord = [0, 0, 0]
    
    for line in off:
        line = line.strip()
        if count == 0:
            if line != "OFF":
                print "Only OFF format files are supported (not nOFF, 4OFF, etc.)"
                return
        elif count == 1:
            sys.stdout.write("gGeometry = {\n")
            sys.stdout.write(" vertices: [")
            
            d = wsre.split(line)
            nVerts = int(d[0])
            nFaces = int(d[1])
            nEdges = int(d[2])
        elif count < nVerts + 2:
            d = wsre.split(line)
            x = float(d[0])
            y = float(d[0])
            z = float(d[1])
            
            sys.stdout.write("[%s, %s, %s]," % (d[0], d[1], d[2]))
        else:
            if not closedverts:
                sys.stdout.write("],\n")
                sys.stdout.write(" faces: [")
                closedverts = True
            d = wsre.split(line)
            n = int(d[0])
            sys.stdout.write("[")
            for k in range(n):
                sys.stdout.write("%s," % d[k+1])
            sys.stdout.write("],")
        count += 1
    sys.stdout.write("],\n")
    sys.stdout.write("};\n")

    off.close()

def usage():
    print "Usage: off-to-js.py file.off"
    
def main(args):
    if len(args) != 2:
        usage()
        return
    offToJs(args[1]);

main(sys.argv)