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#!/usr/bin/env python
###############################################################################
# $Id: vec_tr.py 7151ebd90dea6635aceeda52bcf5240112a0f065 2018-05-08 03:24:39 +1000 Ben Elliston $
#
# Project: OGR Python samples
# Purpose: Apply a transformation to all OGR geometries.
# Author: Frank Warmerdam, warmerdam@pobox.com
#
###############################################################################
# Copyright (c) 2006, Frank Warmerdam <warmerdam@pobox.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
###############################################################################
import sys
from osgeo import ogr
#############################################################################
def TransformPoint(xyz):
x = xyz[0]
y = xyz[1]
z = xyz[2]
x = x + 1000
return (x, y, z)
#############################################################################
def WalkAndTransform(geom):
if geom.GetGeometryCount() > 0:
for i in range(geom.GetGeometryCount()):
old_geom = geom.GetGeometryRef(i)
new_geom = WalkAndTransform(old_geom)
if new_geom is not old_geom:
geom.SetGeometryDirectly(new_geom)
return geom
for i in range(geom.GetPointCount()):
xyz = (geom.GetX(i), geom.GetY(i), geom.GetZ(i))
xyz = TransformPoint(xyz)
geom.SetPoint(i, xyz[0], xyz[1], xyz[2])
return geom
#############################################################################
def Usage():
print('Usage: vec_tr.py infile outfile [layer]')
print('')
sys.exit(1)
#############################################################################
# Argument processing.
infile = None
outfile = None
layer_name = None
for arg in sys.argv[1:]:
if infile is None:
infile = arg
elif outfile is None:
outfile = arg
elif layer_name is None:
layer_name = arg
else:
Usage()
if outfile is None:
Usage()
#############################################################################
# Open the datasource to operate on.
in_ds = ogr.Open(infile, update=0)
if layer_name is not None:
in_layer = in_ds.GetLayerByName(layer_name)
else:
in_layer = in_ds.GetLayer(0)
in_defn = in_layer.GetLayerDefn()
#############################################################################
# Create output file with similar information.
shp_driver = ogr.GetDriverByName('ESRI Shapefile')
shp_driver.DeleteDataSource(outfile)
shp_ds = shp_driver.CreateDataSource(outfile)
shp_layer = shp_ds.CreateLayer(in_defn.GetName(),
geom_type=in_defn.GetGeomType(),
srs=in_layer.GetSpatialRef())
in_field_count = in_defn.GetFieldCount()
for fld_index in range(in_field_count):
src_fd = in_defn.GetFieldDefn(fld_index)
fd = ogr.FieldDefn(src_fd.GetName(), src_fd.GetType())
fd.SetWidth(src_fd.GetWidth())
fd.SetPrecision(src_fd.GetPrecision())
shp_layer.CreateField(fd)
#############################################################################
# Process all features in input layer.
in_feat = in_layer.GetNextFeature()
while in_feat is not None:
geom = in_feat.GetGeometryRef().Clone()
geom = WalkAndTransform(geom)
out_feat = ogr.Feature(feature_def=shp_layer.GetLayerDefn())
out_feat.SetFrom(in_feat)
out_feat.SetGeometryDirectly(geom)
shp_layer.CreateFeature(out_feat)
out_feat.Destroy()
in_feat.Destroy()
in_feat = in_layer.GetNextFeature()
#############################################################################
# Cleanup
shp_ds.Destroy()
in_ds.Destroy()
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