#!/bin/bash

GDAL_TILE_PROCESSES=16
GDAL_TILE_ZOOMS=8-14
GDAL_SAMPLING_WARP=cubic
GDAL_SAMPLING_TILE=antialias

# Create virtual dataset with coordinates
gdal_translate -of VRT -a_srs EPSG:4326 -outsize 300% 300% -gcp 8259.0 6258.0 20.992583333333332 57 -gcp 26871.0 2283.0 21.789666666666665 57.15136666666667 -gcp 26751.0 22035.0 21.898233333333334 56.677033333333334 -gcp 6357.0 20040.0 20.9922 56.666666666666664 1915_3verst_de_126k/greif/Reihe_VIII_Blatt_1_Hasenport_1914_greif.jpg Reihe_VIII_Blatt_1_Hasenport_1914_greif.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "4627.5 2295.757079400333\n15760.5 2285.9983342587448\n26871.0 2283.0\n26790.0 12162.001665741254\n26751.0 22035.0\n15627.0 22057.494169905607\n4501.5 22101.00333148251" | \
  gdaltransform -tps -output_xy Reihe_VIII_Blatt_1_Hasenport_1914_greif.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VIII_Blatt_1_Hasenport_1914_greif.vrt Reihe_VIII_Blatt_1_Hasenport_1914_greif.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VIII_Blatt_1_Hasenport_1914_greif.cut.vrt Reihe_VIII_Blatt_1_Hasenport_1914_greif.xyz