#!/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 2232.0 2616.0 21.6816 57.61686666666667 -gcp 29745.0 2628.0 22.913183333333333 57.69295 -gcp 29649.0 22353.0 23.004 57.22128333333333 -gcp 2205.0 22350.0 21.789666666666665 57.15136666666667 1915_3verst_de_126k/uw/Reihe_VII_Blatt_2_Talssen_1915_uw.jpg Reihe_VII_Blatt_2_Talssen_1915_uw.vrt

# Add cutline to VRT
gdalwarp -r $GDAL_SAMPLING_WARP -tps -dstalpha -cutline_srs EPSG:4326 \
  -cutline "POLYGON(($(echo -e "2223.0 12496.507495835647\n2232.0 2616.0\n15994.5 2600.988339811216\n29745.0 2628.0\n29688.0 12499.504997223765\n29649.0 22353.0\n15924.0 22341.744586340923\n2205.0 22350.0" | \
  gdaltransform -tps -output_xy Reihe_VII_Blatt_2_Talssen_1915_uw.vrt | \
  awk 'NR==1{first=$0} {printf "%s %s,", $1,$2} END{print " " first}')))" \
  Reihe_VII_Blatt_2_Talssen_1915_uw.vrt Reihe_VII_Blatt_2_Talssen_1915_uw.cut.vrt

# Generate tiles
gdal2tiles.py -r $GDAL_SAMPLING_TILE --xyz -z $GDAL_TILE_ZOOMS -x --processes=$GDAL_TILE_PROCESSES Reihe_VII_Blatt_2_Talssen_1915_uw.cut.vrt Reihe_VII_Blatt_2_Talssen_1915_uw.xyz