DM_iterate_simple.py

## @package python.demo.DM_iterate_simple
# 
#   iterating over all points of an existing ODM within python 
#   (script works in python 2 and 3)
# 
 
from __future__ import print_function  # print function syntax as in python 3
import sys
 
from opals import pyDM
 
def DM_iterate_simple(filename, maxOutput=1000):
    # open the odm / pyDM.Datamanager.load parameters: filename(string), readOnly(bool) threadSafety(bool)
    dm = pyDM.Datamanager.load(filename, True, False)
 
    # if the dm wasn't opened successful exit function
    if not dm:
        print("Unable to open ODM '" + filename + "'")
        return
 
    idx = 0
    print("Output", dm.sizePoint(), "points from the ODM")
 
    # now iterate over all points
    for pt in dm.points():
        idx += 1
 
        # output point
        print(idx, ".point", "%.3f" % pt.x, "%.3f" % pt.y, "%.3f" % pt.z)
 
        if idx >= maxOutput:
            print("iteration stopped")
            break
 
    print("done")
 
 
if len(sys.argv) == 1:
    print("ODM parameter missing")
    sys.exit(-1)
 
DM_iterate_simple(sys.argv[1])